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1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>rxvtperl - rxvt-unicode's embedded perl interpreter</title>
5 <link rev="made" href="mailto:perl-binary@plan9.de" />
6 </head>
7
8 <body style="background-color: white">
9
10 <p><a name="__index__"></a></p>
11 <!-- INDEX BEGIN -->
12
13 <ul>
14
15 <li><a href="#name">NAME</a></li>
16 <li><a href="#synopsis">SYNOPSIS</a></li>
17 <li><a href="#description">DESCRIPTION</a></li>
18 <li><a href="#prepackaged_extensions">PREPACKAGED EXTENSIONS</a></li>
19 <li><a href="#api_documentation">API DOCUMENTATION</a></li>
20 <ul>
21
22 <li><a href="#general_api_considerations">General API Considerations</a></li>
23 <li><a href="#extension_objects">Extension Objects</a></li>
24 <li><a href="#hooks">Hooks</a></li>
25 <li><a href="#variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></li>
26 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>
27 <li><a href="#rendition">RENDITION</a></li>
28 <li><a href="#the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></li>
29 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>
30 <li><a href="#the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></li>
31 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>
32 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>
33 <li><a href="#the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></li>
34 <li><a href="#the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></li>
35 </ul>
36
37 <li><a href="#environment">ENVIRONMENT</a></li>
38 <ul>
39
40 <li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
41 </ul>
42
43 <li><a href="#author">AUTHOR</a></li>
44 </ul>
45 <!-- INDEX END -->
46
47 <hr />
48 <p>
49 </p>
50 <hr />
51 <h1><a name="name">NAME</a></h1>
52 <p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
53 <p>
54 </p>
55 <hr />
56 <h1><a name="synopsis">SYNOPSIS</a></h1>
57 <pre>
58 # create a file grab_test in $HOME:</pre>
59 <pre>
60 sub on_sel_grab {
61 warn &quot;you selected &quot;, $_[0]-&gt;selection;
62 ()
63 }</pre>
64 <pre>
65 # start a rxvt using it:</pre>
66 <pre>
67 rxvt --perl-lib $HOME -pe grab_test</pre>
68 <p>
69 </p>
70 <hr />
71 <h1><a name="description">DESCRIPTION</a></h1>
72 <p>Everytime a terminal object gets created, extension scripts specified via
73 the <code>perl</code> resource are loaded and associated with it.</p>
74 <p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
75 thus must be encoded as UTF-8.</p>
76 <p>Each script will only ever be loaded once, even in rxvtd, where
77 scripts will be shared (but not enabled) for all terminals.</p>
78 <p>
79 </p>
80 <hr />
81 <h1><a name="prepackaged_extensions">PREPACKAGED EXTENSIONS</a></h1>
82 <p>This section describes the extensions delivered with this release. You can
83 find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
84 <p>You can activate them like this:</p>
85 <pre>
86 rxvt -pe &lt;extensionname&gt;</pre>
87 <p>Or by adding them to the resource for extensions loaded by default:</p>
88 <pre>
89 URxvt.perl-ext-common: default,automove-background,selection-autotransform</pre>
90 <dl>
91 <dt><strong><a name="item_selection">selection (enabled by default)</a></strong><br />
92 </dt>
93 <dd>
94 (More) intelligent selection. This extension tries to be more intelligent
95 when the user extends selections (double-click and further clicks). Right
96 now, it tries to select words, urls and complete shell-quoted
97 arguments, which is very convenient, too, if your <em>ls</em> supports
98 <code>--quoting-style=shell</code>.
99 </dd>
100 <dd>
101 <p>A double-click usually selects the word under the cursor, further clicks
102 will enlarge the selection.</p>
103 </dd>
104 <dd>
105 <p>The selection works by trying to match a number of regexes and displaying
106 them in increasing order of length. You can add your own regexes by
107 specifying resources of the form:</p>
108 </dd>
109 <dd>
110 <pre>
111 URxvt.selection.pattern-0: perl-regex
112 URxvt.selection.pattern-1: perl-regex
113 ...</pre>
114 </dd>
115 <dd>
116 <p>The index number (0, 1...) must not have any holes, and each regex must
117 contain at least one pair of capturing parentheses, which will be used for
118 the match. For example, the followign adds a regex that matches everything
119 between two vertical bars:</p>
120 </dd>
121 <dd>
122 <pre>
123 URxvt.selection.pattern-0: \\|([^|]+)\\|</pre>
124 </dd>
125 <dd>
126 <p>Another example: Programs I use often output ``absolute path: '' at the
127 beginning of a line when they process multiple files. The following
128 pattern matches the filename (note, there is a single space at the very
129 end):</p>
130 </dd>
131 <dd>
132 <pre>
133 URxvt.selection.pattern-0: ^(/[^:]+):\</pre>
134 </dd>
135 <dd>
136 <p>You can look at the source of the selection extension to see more
137 interesting uses, such as parsing a line from beginning to end.</p>
138 </dd>
139 <dd>
140 <p>This extension also offers following bindable keyboard commands:</p>
141 </dd>
142 <dl>
143 <dt><strong><a name="item_rot13">rot13</a></strong><br />
144 </dt>
145 <dd>
146 Rot-13 the selection when activated. Used via keyboard trigger:
147 </dd>
148 <dd>
149 <pre>
150 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
151 </dd>
152 <p></p></dl>
153 <dt><strong><a name="item_popup">option-popup (enabled by default)</a></strong><br />
154 </dt>
155 <dd>
156 Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
157 runtime.
158 </dd>
159 <p></p>
160 <dt><strong>selection-popup (enabled by default)</strong><br />
161 </dt>
162 <dd>
163 Binds a popup menu to Ctrl-Button3 that lets you convert the selection
164 text into various other formats/action (such as uri unescaping, perl
165 evaluation, web-browser starting etc.), depending on content.
166 </dd>
167 <dd>
168 <p>Other extensions can extend this popup menu by pushing a code reference
169 onto <code>@{ $term-</code>{selection_popup_hook} }&gt;, that is called whenever the
170 popup is displayed.</p>
171 </dd>
172 <dd>
173 <p>It's sole argument is the popup menu, which can be modified. The selection
174 is in <code>$_</code>, which can be used to decide wether to add something or not.
175 It should either return nothing or a string and a code reference. The
176 string will be used as button text and the code reference will be called
177 when the button gets activated and should transform <code>$_</code>.</p>
178 </dd>
179 <dd>
180 <p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
181 the selection to <code>b</code>s, but only if the selection currently contains any
182 <code>a</code>s:</p>
183 </dd>
184 <dd>
185 <pre>
186 push @{ $self-&gt;{term}{selection_popup_hook} }, sub {
187 /a/ ? (&quot;a to be&quot; =&gt; sub { s/a/b/g }
188 : ()
189 };</pre>
190 </dd>
191 <p></p>
192 <dt><strong><a name="item_searchable_2dscrollback_3chotkey_3e__28enabled_by_">searchable-scrollback&lt;hotkey&gt; (enabled by default)</a></strong><br />
193 </dt>
194 <dd>
195 Adds regex search functionality to the scrollback buffer, triggered
196 by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
197 input/output is suspended and a regex is displayed at the bottom of the
198 screen.
199 </dd>
200 <dd>
201 <p>Inputting characters appends them to the regex and continues incremental
202 search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
203 search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
204 bottom. <code>Escape</code> leaves search mode and returns to the point where search
205 was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
206 additionally stores the first match in the current line into the primary
207 selection.</p>
208 </dd>
209 <p></p>
210 <dt><strong><a name="item_readline">readline (enabled by default)</a></strong><br />
211 </dt>
212 <dd>
213 A support package that tries to make editing with readline easier. At the
214 moment, it reacts to clicking with the left mouse button by trying to
215 move the text cursor to this position. It does so by generating as many
216 cursor-left or cursor-right keypresses as required (the this only works
217 for programs that correctly support wide characters).
218 </dd>
219 <dd>
220 <p>To avoid too many false positives, this is only done when:</p>
221 </dd>
222 <dl>
223 <dt><strong><a name="item__2d_the_tty_is_in_icanon_state_2e">- the tty is in ICANON state.</a></strong><br />
224 </dt>
225 <dt><strong><a name="item__2d_the_text_cursor_is_visible_2e">- the text cursor is visible.</a></strong><br />
226 </dt>
227 <dt><strong><a name="item__2d_the_primary_screen_is_currently_being_displaye">- the primary screen is currently being displayed.</a></strong><br />
228 </dt>
229 <dt><strong><a name="item_same">- the mouse is on the same (multi-row-) line as the text cursor.</a></strong><br />
230 </dt>
231 </dl>
232 <p>The normal selection mechanism isn't disabled, so quick successive clicks
233 might interfere with selection creation in harmless ways.</p>
234 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong><br />
235 </dt>
236 <dd>
237 This selection allows you to do automatic transforms on a selection
238 whenever a selection is made.
239 </dd>
240 <dd>
241 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
242 operator) that modify <code>$_</code> as resources:</p>
243 </dd>
244 <dd>
245 <pre>
246 URxvt.selection-autotransform.0: transform
247 URxvt.selection-autotransform.1: transform
248 ...</pre>
249 </dd>
250 <dd>
251 <p>For example, the following will transform selections of the form
252 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
253 $word</code>:</p>
254 </dd>
255 <dd>
256 <pre>
257 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
258 </dd>
259 <dd>
260 <p>And this example matches the same,but replaces it with vi-commands you can
261 paste directly into your (vi :) editor:</p>
262 </dd>
263 <dd>
264 <pre>
265 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
266 </dd>
267 <dd>
268 <p>Of course, this can be modified to suit your needs and your editor :)</p>
269 </dd>
270 <dd>
271 <p>To expand the example above to typical perl error messages (``XXX at
272 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
273 </dd>
274 <dd>
275 <pre>
276 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
277 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
278 </dd>
279 <dd>
280 <p>The first line tells the selection code to treat the unchanging part of
281 every error message as a selection pattern, and the second line transforms
282 the message into vi commands to load the file.</p>
283 </dd>
284 <p></p>
285 <dt><strong><a name="item_tabbed">tabbed</a></strong><br />
286 </dt>
287 <dd>
288 This transforms the terminal into a tabbar with additional terminals, that
289 is, it implements what is commonly refered to as ``tabbed terminal''. The topmost line
290 displays a ``[NEW]'' button, which, when clicked, will add a new tab, followed by one
291 button per tab.
292 </dd>
293 <dd>
294 <p>Clicking a button will activate that tab. Pressing <strong>Shift-Left</strong> and
295 <strong>Shift-Right</strong> will switch to the tab left or right of the current one,
296 while <strong>Shift-Down</strong> creates a new tab.</p>
297 </dd>
298 <p></p>
299 <dt><strong><a name="item_mark_2durls">mark-urls</a></strong><br />
300 </dt>
301 <dd>
302 Uses per-line display filtering (<code>on_line_update</code>) to underline urls and
303 make them clickable. When middle-clicked, the program specified in the
304 resource <code>urlLauncher</code> (default <code>x-www-browser</code>) will be started with
305 the URL as first argument.
306 </dd>
307 <p></p>
308 <dt><strong><a name="item_xim_2donthespot">xim-onthespot</a></strong><br />
309 </dt>
310 <dd>
311 This (experimental) perl extension implements OnTheSpot editing. It does
312 not work perfectly, and some input methods don't seem to work well with
313 OnTheSpot editing in general, but it seems to work at leats for SCIM and
314 kinput2.
315 </dd>
316 <dd>
317 <p>You enable it by specifying this extension and a preedit style of
318 <code>OnTheSpot</code>, i.e.:</p>
319 </dd>
320 <dd>
321 <pre>
322 rxvt -pt OnTheSpot -pe xim-onthespot</pre>
323 </dd>
324 <p></p>
325 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong><br />
326 </dt>
327 <dd>
328 This is basically a one-line extension that dynamically changes the background pixmap offset
329 to the window position, in effect creating the same effect as pseudo transparency with
330 a custom pixmap. No scaling is supported in this mode. Exmaple:
331 </dd>
332 <dd>
333 <pre>
334 rxvt -pixmap background.xpm -pe automove-background</pre>
335 </dd>
336 <p></p>
337 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong><br />
338 </dt>
339 <dd>
340 A not very useful example of filtering all text output to the terminal,
341 by replacing all line-drawing characters (U+2500 .. U+259F) by a
342 similar-looking ascii character.
343 </dd>
344 <p></p>
345 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
346 </dt>
347 <dd>
348 Displays a digital clock using the built-in overlay.
349 </dd>
350 <p></p>
351 <dt><strong><a name="item_remote_2dclipboard">remote-clipboard</a></strong><br />
352 </dt>
353 <dd>
354 Somewhat of a misnomer, this extension adds two menu entries to the
355 selection popup that allows one ti run external commands to store the
356 selection somewhere and fetch it again.
357 </dd>
358 <dd>
359 <p>We use it to implement a ``distributed selection mechanism'', which just
360 means that one command uploads the file to a remote server, and another
361 reads it.</p>
362 </dd>
363 <dd>
364 <p>The commands can be set using the <code>URxvt.remote-selection.store</code> and
365 <code>URxvt.remote-selection.fetch</code> resources. The first should read the
366 selection to store from STDIN (always in UTF-8), the second should provide
367 the selection data on STDOUT (also in UTF-8).</p>
368 </dd>
369 <dd>
370 <p>The defaults (which are likely useless to you) use rsh and cat:</p>
371 </dd>
372 <dd>
373 <pre>
374 URxvt.remote-selection.store: rsh ruth 'cat &gt;/tmp/distributed-selection'
375 URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'</pre>
376 </dd>
377 <p></p>
378 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong><br />
379 </dt>
380 <dd>
381 This is a little rarely useful extension that Uploads the selection as
382 textfile to a remote site (or does other things). (The implementation is
383 not currently secure for use in a multiuser environment as it writes to
384 <em>/tmp</em> directly.).
385 </dd>
386 <dd>
387 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
388 i.e.</p>
389 </dd>
390 <dd>
391 <pre>
392 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
393 </dd>
394 <dd>
395 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
396 the textfile. This command can be set via a resource:</p>
397 </dd>
398 <dd>
399 <pre>
400 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
401 </dd>
402 <dd>
403 <p>And the default is likely not useful to anybody but the few people around
404 here :)</p>
405 </dd>
406 <dd>
407 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
408 the same content should lead to the same filename.</p>
409 </dd>
410 <dd>
411 <p>After a successful upload the selection will be replaced by the text given
412 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
413 for the filename):</p>
414 </dd>
415 <dd>
416 <pre>
417 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
418 </dd>
419 <p></p>
420 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
421 </dt>
422 <dd>
423 Displays a very simple digital clock in the upper right corner of the
424 window. Illustrates overwriting the refresh callbacks to create your own
425 overlays or changes.
426 </dd>
427 <p></p></dl>
428 <p>
429 </p>
430 <hr />
431 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
432 <p>
433 </p>
434 <h2><a name="general_api_considerations">General API Considerations</a></h2>
435 <p>All objects (such as terminals, time watchers etc.) are typical
436 reference-to-hash objects. The hash can be used to store anything you
437 like. All members starting with an underscore (such as <code>_ptr</code> or
438 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
439 modified).</p>
440 <p>When objects are destroyed on the C++ side, the perl object hashes are
441 emptied, so its best to store related objects such as time watchers and
442 the like inside the terminal object so they get destroyed as soon as the
443 terminal is destroyed.</p>
444 <p>Argument names also often indicate the type of a parameter. Here are some
445 hints on what they mean:</p>
446 <dl>
447 <dt><strong><a name="item__24text">$text</a></strong><br />
448 </dt>
449 <dd>
450 Rxvt-unicodes special way of encoding text, where one ``unicode'' character
451 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.
452 </dd>
453 <p></p>
454 <dt><strong><a name="item__24string">$string</a></strong><br />
455 </dt>
456 <dd>
457 A perl text string, with an emphasis on <em>text</em>. It can store all unicode
458 characters and is to be distinguished with text encoded in a specific
459 encoding (often locale-specific) and binary data.
460 </dd>
461 <p></p>
462 <dt><strong><a name="item__24octets">$octets</a></strong><br />
463 </dt>
464 <dd>
465 Either binary data or - more common - a text string encoded in a
466 locale-specific way.
467 </dd>
468 <p></p></dl>
469 <p>
470 </p>
471 <h2><a name="extension_objects">Extension Objects</a></h2>
472 <p>Very perl extension is a perl class. A separate perl object is created
473 for each terminal and each extension and passed as the first parameter to
474 hooks. So extensions can use their <code>$self</code> object without having to think
475 about other extensions, with the exception of methods and members that
476 begin with an underscore character <code>_</code>: these are reserved for internal
477 use.</p>
478 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
479 <code>urxvt::term</code> class on this object.</p>
480 <p>It has the following methods and data members:</p>
481 <dl>
482 <dt><strong><a name="item__24urxvt_term__3d__24self_2d_3e_7bterm_7d">$urxvt_term = $self-&gt;{term}</a></strong><br />
483 </dt>
484 <dd>
485 Returns the <code>urxvt::term</code> object associated with this instance of the
486 extension. This member <em>must not</em> be changed in any way.
487 </dd>
488 <p></p>
489 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong><br />
490 </dt>
491 <dd>
492 Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
493 this extension, replacing any previous hook. This is useful when you want
494 to overwrite time-critical hooks only temporarily.
495 </dd>
496 <p></p>
497 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong><br />
498 </dt>
499 <dd>
500 Dynamically disable the given hooks.
501 </dd>
502 <p></p></dl>
503 <p>
504 </p>
505 <h2><a name="hooks">Hooks</a></h2>
506 <p>The following subroutines can be declared in extension files, and will be
507 called whenever the relevant event happens.</p>
508 <p>The first argument passed to them is an extension oject as described in
509 the in the <code>Extension Objects</code> section.</p>
510 <p><strong>All</strong> of these hooks must return a boolean value. If any of the called
511 hooks returns true, then the event counts as being <em>consumed</em>, and the
512 relevant action might not be carried out by the C++ code.</p>
513 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
514 <dl>
515 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />
516 </dt>
517 <dd>
518 Called after a new terminal object has been initialized, but before
519 windows are created or the command gets run. Most methods are unsafe to
520 call or deliver senseless data, as terminal size and other characteristics
521 have not yet been determined. You can safely query and change resources
522 and options, though. For many purposes the <code>on_start</code> hook is a better
523 place.
524 </dd>
525 <p></p>
526 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
527 </dt>
528 <dd>
529 Called at the very end of initialisation of a new terminal, just before
530 trying to map (display) the toplevel and returning to the mainloop.
531 </dd>
532 <p></p>
533 <dt><strong><a name="item_on_destroy__24term">on_destroy $term</a></strong><br />
534 </dt>
535 <dd>
536 Called whenever something tries to destroy terminal, when the terminal is
537 still fully functional (not for long, though).
538 </dd>
539 <p></p>
540 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
541 </dt>
542 <dd>
543 Called after the screen is ``reset'' for any reason, such as resizing or
544 control sequences. Here is where you can react on changes to size-related
545 variables.
546 </dd>
547 <p></p>
548 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong><br />
549 </dt>
550 <dd>
551 Called just after the child process has been <code>fork</code>ed.
552 </dd>
553 <p></p>
554 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong><br />
555 </dt>
556 <dd>
557 Called just after the child process has exited. <code>$status</code> is the status
558 from <code>waitpid</code>.
559 </dd>
560 <p></p>
561 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
562 </dt>
563 <dd>
564 Called whenever a selection has been made by the user, but before the
565 selection text is copied, so changes to the beginning, end or type of the
566 selection will be honored.
567 </dd>
568 <dd>
569 <p>Returning a true value aborts selection making by urxvt, in which case you
570 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
571 </dd>
572 <p></p>
573 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
574 </dt>
575 <dd>
576 Called whenever a selection has been copied, but before the selection is
577 requested from the server. The selection text can be queried and changed
578 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.
579 </dd>
580 <dd>
581 <p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
582 </dd>
583 <p></p>
584 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
585 </dt>
586 <dd>
587 Called whenever the user tries to extend the selection (e.g. with a double
588 click) and is either supposed to return false (normal operation), or
589 should extend the selection itelf and return true to suppress the built-in
590 processing. This can happen multiple times, as long as the callback
591 returns true, it will be called on every further click by the user and is
592 supposed to enlarge the selection more and more, if possible.
593 </dd>
594 <dd>
595 <p>See the <em>selection</em> example extension.</p>
596 </dd>
597 <p></p>
598 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
599 </dt>
600 <dd>
601 Called whenever the view offset changes, i..e the user or program
602 scrolls. Offset <code>0</code> means display the normal terminal, positive values
603 show this many lines of scrollback.
604 </dd>
605 <p></p>
606 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
607 </dt>
608 <dd>
609 Called whenever lines scroll out of the terminal area into the scrollback
610 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
611 than the scroll back buffer or the terminal.
612 </dd>
613 <dd>
614 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
615 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
616 number of lines that will be in the scrollback buffer.</p>
617 </dd>
618 <p></p>
619 <dt><strong><a name="item_on_osc_seq__24term_2c__24string">on_osc_seq $term, $string</a></strong><br />
620 </dt>
621 <dd>
622 Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
623 operating system command) is processed. Cursor position and other state
624 information is up-to-date when this happens. For interoperability, the
625 string should start with the extension name and a colon, to distinguish
626 it from commands for other extensions, and this might be enforced in the
627 future.
628 </dd>
629 <dd>
630 <p>Be careful not ever to trust (in a security sense) the data you receive,
631 as its source can not easily be controleld (e-mail content, messages from
632 other users on the same system etc.).</p>
633 </dd>
634 <p></p>
635 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong><br />
636 </dt>
637 <dd>
638 Called whenever text is about to be output, with the text as argument. You
639 can filter/change and output the text yourself by returning a true value
640 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
641 might be very slow, however, as your hook is called for <strong>all</strong> text being
642 output.
643 </dd>
644 <p></p>
645 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong><br />
646 </dt>
647 <dd>
648 Called whenever some data is written to the tty/pty and can be used to
649 suppress or filter tty input.
650 </dd>
651 <p></p>
652 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong><br />
653 </dt>
654 <dd>
655 Called whenever a line was updated or changed. Can be used to filter
656 screen output (e.g. underline urls or other useless stuff). Only lines
657 that are being shown will be filtered, and, due to performance reasons,
658 not always immediately.
659 </dd>
660 <dd>
661 <p>The row number is always the topmost row of the line if the line spans
662 multiple rows.</p>
663 </dd>
664 <dd>
665 <p>Please note that, if you change the line, then the hook might get called
666 later with the already-modified line (e.g. if unrelated parts change), so
667 you cannot just toggle rendition bits, but only set them.</p>
668 </dd>
669 <p></p>
670 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
671 </dt>
672 <dd>
673 Called just before the screen gets redrawn. Can be used for overlay
674 or similar effects by modify terminal contents in refresh_begin, and
675 restoring them in refresh_end. The built-in overlay and selection display
676 code is run after this hook, and takes precedence.
677 </dd>
678 <p></p>
679 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
680 </dt>
681 <dd>
682 Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.
683 </dd>
684 <p></p>
685 <dt><strong><a name="item_on_user_command__24term_2c__24string">on_user_command $term, $string</a></strong><br />
686 </dt>
687 <dd>
688 Called whenever the a user-configured event is being activated (e.g. via
689 a <code>perl:string</code> action bound to a key, see description of the <strong>keysym</strong>
690 resource in the <code>rxvt(1)</code> manpage).
691 </dd>
692 <dd>
693 <p>The event is simply the action string. This interface is assumed to change
694 slightly in the future.</p>
695 </dd>
696 <p></p>
697 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong><br />
698 </dt>
699 <dd>
700 Called on every X event received on the vt window (and possibly other
701 windows). Should only be used as a last resort. Most event structure
702 members are not passed.
703 </dd>
704 <p></p>
705 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
706 </dt>
707 <dd>
708 Called whenever the window gets the keyboard focus, before rxvt-unicode
709 does focus in processing.
710 </dd>
711 <p></p>
712 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
713 </dt>
714 <dd>
715 Called wheneever the window loses keyboard focus, before rxvt-unicode does
716 focus out processing.
717 </dd>
718 <p></p>
719 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong><br />
720 </dt>
721 <dt><strong><a name="item_on_property_notify__24term_2c__24event">on_property_notify $term, $event</a></strong><br />
722 </dt>
723 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong><br />
724 </dt>
725 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong><br />
726 </dt>
727 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong><br />
728 </dt>
729 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong><br />
730 </dt>
731 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong><br />
732 </dt>
733 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong><br />
734 </dt>
735 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong><br />
736 </dt>
737 <dd>
738 Called whenever the corresponding X event is received for the terminal If
739 the hook returns true, then the even will be ignored by rxvt-unicode.
740 </dd>
741 <dd>
742 <p>The event is a hash with most values as named by Xlib (see the XEvent
743 manpage), with the additional members <code>row</code> and <code>col</code>, which are the
744 (real, not screen-based) row and column under the mouse cursor.</p>
745 </dd>
746 <dd>
747 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
748 output, if any, in locale-specific encoding.</p>
749 </dd>
750 <dd>
751 <p>subwindow.</p>
752 </dd>
753 <p></p>
754 <dt><strong><a name="item_on_client_message__24term_2c__24event">on_client_message $term, $event</a></strong><br />
755 </dt>
756 <dt><strong><a name="item_on_wm_protocols__24term_2c__24event">on_wm_protocols $term, $event</a></strong><br />
757 </dt>
758 <dt><strong><a name="item_on_wm_delete_window__24term_2c__24event">on_wm_delete_window $term, $event</a></strong><br />
759 </dt>
760 <dd>
761 Called when various types of ClientMessage events are received (all with
762 format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
763 </dd>
764 <p></p></dl>
765 <p>
766 </p>
767 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
768 <dl>
769 <dt><strong><a name="item__24urxvt_3a_3alibdir">$urxvt::LIBDIR</a></strong><br />
770 </dt>
771 <dd>
772 The rxvt-unicode library directory, where, among other things, the perl
773 modules and scripts are stored.
774 </dd>
775 <p></p>
776 <dt><strong><a name="item__24urxvt_3a_3aresclass_2c__24urxvt_3a_3aresclass">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong><br />
777 </dt>
778 <dd>
779 The resource class and name rxvt-unicode uses to look up X resources.
780 </dd>
781 <p></p>
782 <dt><strong><a name="item__24urxvt_3a_3arxvtname">$urxvt::RXVTNAME</a></strong><br />
783 </dt>
784 <dd>
785 The basename of the installed binaries, usually <code>urxvt</code>.
786 </dd>
787 <p></p>
788 <dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
789 </dt>
790 <dd>
791 The current terminal. This variable stores the current <code>urxvt::term</code>
792 object, whenever a callback/hook is executing.
793 </dd>
794 <p></p>
795 <dt><strong><a name="item__40urxvt_3a_3aterm_init">@urxvt::TERM_INIT</a></strong><br />
796 </dt>
797 <dd>
798 All coderefs in this array will be called as methods of the next newly
799 created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
800 gets cleared before the codereferences that were in it are being executed,
801 so coderefs can push themselves onto it again if they so desire.
802 </dd>
803 <dd>
804 <p>This complements to the perl-eval commandline option, but gets executed
805 first.</p>
806 </dd>
807 <p></p>
808 <dt><strong><a name="item__40urxvt_3a_3aterm_ext">@urxvt::TERM_EXT</a></strong><br />
809 </dt>
810 <dd>
811 Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
812 get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
813 but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.
814 </dd>
815 <p></p></dl>
816 <p>
817 </p>
818 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
819 <dl>
820 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
821 </dt>
822 <dd>
823 Fatally aborts execution with the given error message. Avoid at all
824 costs! The only time this is acceptable is when the terminal process
825 starts up.
826 </dd>
827 <p></p>
828 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
829 </dt>
830 <dd>
831 Calls <code>rxvt_warn</code> with the given string which should not include a
832 newline. The module also overwrites the <code>warn</code> builtin with a function
833 that calls this function.
834 </dd>
835 <dd>
836 <p>Using this function has the advantage that its output ends up in the
837 correct place, e.g. on stderr of the connecting urxvtc client.</p>
838 </dd>
839 <dd>
840 <p>Messages have a size limit of 1023 bytes currently.</p>
841 </dd>
842 <p></p>
843 <dt><strong><a name="item__40terms__3d_urxvt_3a_3atermlist">@terms = urxvt::termlist</a></strong><br />
844 </dt>
845 <dd>
846 Returns all urxvt::term objects that exist in this process, regardless of
847 wether they are started, being destroyed etc., so be careful. Only term
848 objects that have perl extensions attached will be returned (because there
849 is no urxvt::term objet associated with others).
850 </dd>
851 <p></p>
852 <dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
853 </dt>
854 <dd>
855 Returns the ``current time'' (as per the event loop).
856 </dd>
857 <p></p>
858 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong><br />
859 </dt>
860 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
861 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
862 Button4Mask, Button5Mask, AnyModifier</a></strong><br />
863 </dt>
864 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
865 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
866 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
867 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
868 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
869 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
870 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong><br />
871 </dt>
872 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
873 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
874 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
875 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
876 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
877 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
878 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong><br />
879 </dt>
880 <dd>
881 Various constants for use in X calls and event processing.
882 </dd>
883 <p></p></dl>
884 <p>
885 </p>
886 <h2><a name="rendition">RENDITION</a></h2>
887 <p>Rendition bitsets contain information about colour, font, font styles and
888 similar information for each screen cell.</p>
889 <p>The following ``macros'' deal with changes in rendition sets. You should
890 never just create a bitset, you should always modify an existing one,
891 as they contain important information required for correct operation of
892 rxvt-unicode.</p>
893 <dl>
894 <dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
895 </dt>
896 <dd>
897 Returns the default rendition, as used when the terminal is starting up or
898 being reset. Useful as a base to start when creating renditions.
899 </dd>
900 <p></p>
901 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
902 </dt>
903 <dd>
904 Return the rendition mask used for overlays by default.
905 </dd>
906 <p></p>
907 <dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
908 </dt>
909 <dd>
910 Return the bit that enabled bold, italic, blink, reverse-video and
911 underline, respectively. To enable such a style, just logically OR it into
912 the bitset.
913 </dd>
914 <p></p>
915 <dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
916 </dt>
917 <dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
918 </dt>
919 <dd>
920 Return the foreground/background colour index, respectively.
921 </dd>
922 <p></p>
923 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_fgcolor__24rend_2c__24n">$rend = urxvt::SET_FGCOLOR $rend, $new_colour</a></strong><br />
924 </dt>
925 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_bgcolor__24rend_2c__24n">$rend = urxvt::SET_BGCOLOR $rend, $new_colour</a></strong><br />
926 </dt>
927 <dd>
928 Replace the foreground/background colour in the rendition mask with the
929 specified one.
930 </dd>
931 <p></p>
932 <dt><strong><a name="item__24value__3d_urxvt_3a_3aget_custom__24rend">$value = urxvt::GET_CUSTOM $rend</a></strong><br />
933 </dt>
934 <dd>
935 Return the ``custom'' value: Every rendition has 5 bits for use by
936 extensions. They can be set and changed as you like and are initially
937 zero.
938 </dd>
939 <p></p>
940 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_custom__24rend_2c__24ne">$rend = urxvt::SET_CUSTOM $rend, $new_value</a></strong><br />
941 </dt>
942 <dd>
943 Change the custom value.
944 </dd>
945 <p></p></dl>
946 <p>
947 </p>
948 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
949 <p>The sole purpose of this class is to deliver an interface to the
950 <code>AnyEvent</code> module - any module using it will work inside urxvt without
951 further programming. The only exception is that you cannot wait on
952 condition variables, but non-blocking condvar use is ok. What this means
953 is that you cannot use blocking APIs, but the non-blocking variant should
954 work.</p>
955 <p>
956 </p>
957 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
958 <dl>
959 <dt><strong><a name="item__24term__3d_new_urxvt_3a_3aterm__24envhashref_2c__">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong><br />
960 </dt>
961 <dd>
962 Creates a new terminal, very similar as if you had started it with system
963 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
964 hash which defines the environment of the new terminal.
965 </dd>
966 <dd>
967 <p>Croaks (and probably outputs an error message) if the new instance
968 couldn't be created. Returns <code>undef</code> if the new instance didn't
969 initialise perl, and the terminal object otherwise. The <code>init</code> and
970 <a href="#item_start"><code>start</code></a> hooks will be called before this call returns, and are free to
971 refer to global data (which is race free).</p>
972 </dd>
973 <p></p>
974 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong><br />
975 </dt>
976 <dd>
977 Destroy the terminal object (close the window, free resources
978 etc.). Please note that rxvt will not exit as long as any event
979 watchers (timers, io watchers) are still active.
980 </dd>
981 <p></p>
982 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong><br />
983 </dt>
984 <dd>
985 Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
986 (``starts'') programs in the background. This function takes care of setting
987 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
988 be preferred over explicit calls to <code>exec</code> or <code>system</code>.
989 </dd>
990 <dd>
991 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
992 </dd>
993 <p></p>
994 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong><br />
995 </dt>
996 <dd>
997 Returns true if the option specified by <code>$optval</code> is enabled, and
998 optionally change it. All option values are stored by name in the hash
999 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.
1000 </dd>
1001 <dd>
1002 <p>Here is a a likely non-exhaustive list of option names, please see the
1003 source file <em>/src/optinc.h</em> to see the actual list:</p>
1004 </dd>
1005 <dd>
1006 <pre>
1007 borderLess console cursorBlink cursorUnderline hold iconic insecure
1008 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
1009 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
1010 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
1011 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
1012 transparent tripleclickwords utmpInhibit visualBell</pre>
1013 </dd>
1014 <p></p>
1015 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong><br />
1016 </dt>
1017 <dd>
1018 Returns the current resource value associated with a given name and
1019 optionally sets a new value. Setting values is most useful in the <code>init</code>
1020 hook. Unset resources are returned and accepted as <code>undef</code>.
1021 </dd>
1022 <dd>
1023 <p>The new value must be properly encoded to a suitable character encoding
1024 before passing it to this method. Similarly, the returned value may need
1025 to be converted from the used encoding to text.</p>
1026 </dd>
1027 <dd>
1028 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
1029 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
1030 likely change).</p>
1031 </dd>
1032 <dd>
1033 <p>Please note that resource strings will currently only be freed when the
1034 terminal is destroyed, so changing options frequently will eat memory.</p>
1035 </dd>
1036 <dd>
1037 <p>Here is a a likely non-exhaustive list of resource names, not all of which
1038 are supported in every build, please see the source file <em>/src/rsinc.h</em>
1039 to see the actual list:</p>
1040 </dd>
1041 <dd>
1042 <pre>
1043 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
1044 borderLess color cursorBlink cursorUnderline cutchars delete_key
1045 display_name embed ext_bwidth fade font geometry hold iconName
1046 imFont imLocale inputMethod insecure int_bwidth intensityStyles
1047 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
1048 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
1049 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
1050 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
1051 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
1052 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
1053 secondaryScreen secondaryScroll selectstyle shade term_name title
1054 transient_for transparent transparent_all tripleclickwords utmpInhibit
1055 visualBell</pre>
1056 </dd>
1057 <p></p>
1058 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong><br />
1059 </dt>
1060 <dd>
1061 Returns the X-Resource for the given pattern, excluding the program or
1062 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
1063 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
1064 resource with that pattern exists.
1065 </dd>
1066 <dd>
1067 <p>This method should only be called during the <code>on_start</code> hook, as there is
1068 only one resource database per display, and later invocations might return
1069 the wrong resources.</p>
1070 </dd>
1071 <p></p>
1072 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong><br />
1073 </dt>
1074 <dd>
1075 Adds a keymap translation exactly as specified via a resource. See the
1076 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.
1077 </dd>
1078 <p></p>
1079 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong><br />
1080 </dt>
1081 <dd>
1082 Return and optionally change the current rendition. Text that is output by
1083 the terminal application will use this style.
1084 </dd>
1085 <p></p>
1086 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong><br />
1087 </dt>
1088 <dd>
1089 Return the current coordinates of the text cursor position and optionally
1090 set it (which is usually bad as applications don't expect that).
1091 </dd>
1092 <p></p>
1093 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong><br />
1094 </dt>
1095 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong><br />
1096 </dt>
1097 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong><br />
1098 </dt>
1099 <dd>
1100 Return the current values of the selection mark, begin or end positions,
1101 and optionally set them to new values.
1102 </dd>
1103 <p></p>
1104 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong><br />
1105 </dt>
1106 <dd>
1107 Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
1108 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
1109 rectangular selection will be made. This is the prefered function to make
1110 a selection.
1111 </dd>
1112 <p></p>
1113 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong><br />
1114 </dt>
1115 <dd>
1116 Try to request the primary selection text from the server (for example, as
1117 set by the next method). No visual feedback will be given. This function
1118 is mostly useful from within <code>on_sel_grab</code> hooks.
1119 </dd>
1120 <p></p>
1121 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
1122 </dt>
1123 <dd>
1124 Return the current selection text and optionally replace it by <code>$newtext</code>.
1125 </dd>
1126 <p></p>
1127 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong><br />
1128 </dt>
1129 <dd>
1130 Create a simple multi-line overlay box. See the next method for details.
1131 </dd>
1132 <p></p>
1133 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
1134 </dt>
1135 <dd>
1136 Create a new (empty) overlay at the given position with the given
1137 width/height. <code>$rstyle</code> defines the initial rendition style
1138 (default: <code>OVERLAY_RSTYLE</code>).
1139 </dd>
1140 <dd>
1141 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
1142 around the box.</p>
1143 </dd>
1144 <dd>
1145 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
1146 right/bottom side, respectively.</p>
1147 </dd>
1148 <dd>
1149 <p>This method returns an urxvt::overlay object. The overlay will be visible
1150 as long as the perl object is referenced.</p>
1151 </dd>
1152 <dd>
1153 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1154 </dd>
1155 <dl>
1156 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
1157 </dt>
1158 <dd>
1159 Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1160 text in rxvt-unicode's special encoding and an array of rendition values
1161 at a specific position inside the overlay.
1162 </dd>
1163 <p></p>
1164 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
1165 </dt>
1166 <dd>
1167 If visible, hide the overlay, but do not destroy it.
1168 </dd>
1169 <p></p>
1170 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
1171 </dt>
1172 <dd>
1173 If hidden, display the overlay again.
1174 </dd>
1175 <p></p></dl>
1176 <dt><strong>$popup = $term-&gt;popup ($event)</strong><br />
1177 </dt>
1178 <dd>
1179 Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1180 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1181 currently).
1182 </dd>
1183 <p></p>
1184 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong><br />
1185 </dt>
1186 <dd>
1187 Returns the number of screen-cells this string would need. Correctly
1188 accounts for wide and combining characters.
1189 </dd>
1190 <p></p>
1191 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong><br />
1192 </dt>
1193 <dd>
1194 Convert the given text string into the corresponding locale encoding.
1195 </dd>
1196 <p></p>
1197 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong><br />
1198 </dt>
1199 <dd>
1200 Convert the given locale-encoded octets into a perl string.
1201 </dd>
1202 <p></p>
1203 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong><br />
1204 </dt>
1205 <dd>
1206 XORs the rendition values in the given span with the provided value
1207 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1208 refresh hooks to provide effects similar to the selection.
1209 </dd>
1210 <p></p>
1211 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong><br />
1212 </dt>
1213 <dd>
1214 Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1215 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1216 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1217 it instead. Both styles <em>MUST NOT</em> contain font styles.
1218 </dd>
1219 <p></p>
1220 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong><br />
1221 </dt>
1222 <dd>
1223 Ring the bell!
1224 </dd>
1225 <p></p>
1226 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong><br />
1227 </dt>
1228 <dd>
1229 Write the given text string to the screen, as if output by the application
1230 running inside the terminal. It may not contain command sequences (escape
1231 codes), but is free to use line feeds, carriage returns and tabs. The
1232 string is a normal text string, not in locale-dependent encoding.
1233 </dd>
1234 <dd>
1235 <p>Normally its not a good idea to use this function, as programs might be
1236 confused by changes in cursor position or scrolling. Its useful inside a
1237 <code>on_add_lines</code> hook, though.</p>
1238 </dd>
1239 <p></p>
1240 <dt><strong><a name="item_scr_change_screen">$term-&gt;scr_change_screen ($screen)</a></strong><br />
1241 </dt>
1242 <dd>
1243 Switch to given screen - 0 primary, 1 secondary.
1244 </dd>
1245 <p></p>
1246 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong><br />
1247 </dt>
1248 <dd>
1249 Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1250 locale-specific encoding of the terminal and can contain command sequences
1251 (escape codes) that will be interpreted.
1252 </dd>
1253 <p></p>
1254 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong><br />
1255 </dt>
1256 <dd>
1257 Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1258 pass characters instead of octets, you should convert your strings first
1259 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.
1260 </dd>
1261 <p></p>
1262 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong><br />
1263 </dt>
1264 <dd>
1265 Replaces the event mask of the pty watcher by the given event mask. Can
1266 be used to suppress input and output handling to the pty/tty. See the
1267 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1268 the previous value.
1269 </dd>
1270 <p></p>
1271 <dt><strong><a name="item_pty_fd">$fd = $term-&gt;pty_fd</a></strong><br />
1272 </dt>
1273 <dd>
1274 Returns the master file descriptor for the pty in use, or <code>-1</code> if no pty
1275 is used.
1276 </dd>
1277 <p></p>
1278 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong><br />
1279 </dt>
1280 <dd>
1281 Return the window id of the toplevel window.
1282 </dd>
1283 <p></p>
1284 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong><br />
1285 </dt>
1286 <dd>
1287 Return the window id of the terminal window.
1288 </dd>
1289 <p></p>
1290 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong><br />
1291 </dt>
1292 <dd>
1293 Adds the specified events to the vt event mask. Useful e.g. when you want
1294 to receive pointer events all the times:
1295 </dd>
1296 <dd>
1297 <pre>
1298 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1299 </dd>
1300 <p></p>
1301 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong><br />
1302 </dt>
1303 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong><br />
1304 </dt>
1305 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong><br />
1306 </dt>
1307 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong><br />
1308 </dt>
1309 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong><br />
1310 </dt>
1311 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong><br />
1312 </dt>
1313 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong><br />
1314 </dt>
1315 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong><br />
1316 </dt>
1317 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong><br />
1318 </dt>
1319 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong><br />
1320 </dt>
1321 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong><br />
1322 </dt>
1323 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong><br />
1324 </dt>
1325 <dd>
1326 Return various integers describing terminal characteristics.
1327 </dd>
1328 <p></p>
1329 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong><br />
1330 </dt>
1331 <dd>
1332 Return the DISPLAY used by rxvt-unicode.
1333 </dd>
1334 <p></p>
1335 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong><br />
1336 </dt>
1337 <dd>
1338 Returns the LC_CTYPE category string used by this rxvt-unicode.
1339 </dd>
1340 <p></p>
1341 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong><br />
1342 </dt>
1343 <dd>
1344 Returns a copy of the environment in effect for the terminal as a hashref
1345 similar to <code>\%ENV</code>.
1346 </dd>
1347 <p></p>
1348 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong><br />
1349 </dt>
1350 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong><br />
1351 </dt>
1352 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong><br />
1353 </dt>
1354 <dd>
1355 Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1356 AltGr), the meta key (often Alt) and the num lock key, if applicable.
1357 </dd>
1358 <p></p>
1359 <dt><strong><a name="item_current_screen">$screen = $term-&gt;current_screen</a></strong><br />
1360 </dt>
1361 <dd>
1362 Returns the currently displayed screen (0 primary, 1 secondary).
1363 </dd>
1364 <p></p>
1365 <dt><strong><a name="item_hidden_cursor">$cursor_is_hidden = $term-&gt;hidden_cursor</a></strong><br />
1366 </dt>
1367 <dd>
1368 Returns wether the cursor is currently hidden or not.
1369 </dd>
1370 <p></p>
1371 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong><br />
1372 </dt>
1373 <dd>
1374 Returns the row number of the topmost displayed line. Maximum value is
1375 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1376 this many lines into the scrollback buffer.
1377 </dd>
1378 <p></p>
1379 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong><br />
1380 </dt>
1381 <dd>
1382 Requests a screen refresh. At the next opportunity, rxvt-unicode will
1383 compare the on-screen display with its stored representation. If they
1384 differ, it redraws the differences.
1385 </dd>
1386 <dd>
1387 <p>Used after changing terminal contents to display them.</p>
1388 </dd>
1389 <p></p>
1390 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong><br />
1391 </dt>
1392 <dd>
1393 Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1394 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1395 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1396 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1397 is requested.
1398 </dd>
1399 <dd>
1400 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1401 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1402 to replace only parts of a line. The font index in the rendition will
1403 automatically be updated.</p>
1404 </dd>
1405 <dd>
1406 <p><a href="#item__24text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1407 than one cell when displayed are padded with <code>$urxvt::NOCHAR</code> (chr 65535)
1408 characters. Characters with combining characters and other characters that
1409 do not fit into the normal tetx encoding will be replaced with characters
1410 in the private use area.</p>
1411 </dd>
1412 <dd>
1413 <p>You have to obey this encoding when changing text. The advantage is
1414 that <code>substr</code> and similar functions work on screen cells and not on
1415 characters.</p>
1416 </dd>
1417 <dd>
1418 <p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
1419 can be used to convert normal strings into this encoding and vice versa.</p>
1420 </dd>
1421 <p></p>
1422 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
1423 </dt>
1424 <dd>
1425 Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1426 bitsets. Rendition bitsets contain information about colour, font, font
1427 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.
1428 </dd>
1429 <dd>
1430 <p>When setting rendition, the font mask will be ignored.</p>
1431 </dd>
1432 <dd>
1433 <p>See the section on RENDITION, above.</p>
1434 </dd>
1435 <p></p>
1436 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
1437 </dt>
1438 <dd>
1439 Returns the number of screen cells that are in use (``the line
1440 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1441 line is joined with the following one.
1442 </dd>
1443 <p></p>
1444 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
1445 </dt>
1446 <dd>
1447 Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1448 joined with the following row), which means all characters are in use
1449 and it is continued on the next row (and possibly a continuation of the
1450 previous row(s)).
1451 </dd>
1452 <p></p>
1453 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
1454 </dt>
1455 <dd>
1456 Create and return a new <code>urxvt::line</code> object that stores information
1457 about the logical line that row <code>$row_number</code> is part of. It supports the
1458 following methods:
1459 </dd>
1460 <dl>
1461 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong><br />
1462 </dt>
1463 <dd>
1464 Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
1465 </dd>
1466 <p></p>
1467 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong><br />
1468 </dt>
1469 <dd>
1470 Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
1471 </dd>
1472 <p></p>
1473 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
1474 </dt>
1475 <dd>
1476 Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
1477 </dd>
1478 <p></p>
1479 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
1480 </dt>
1481 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
1482 </dt>
1483 <dd>
1484 Return the row number of the first/last row of the line, respectively.
1485 </dd>
1486 <p></p>
1487 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
1488 </dt>
1489 <dd>
1490 Returns the character offset of the given row|col pair within the logical
1491 line. Works for rows outside the line, too, and returns corresponding
1492 offsets outside the string.
1493 </dd>
1494 <p></p>
1495 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
1496 </dt>
1497 <dd>
1498 Translates a string offset into terminal coordinates again.
1499 </dd>
1500 <p></p></dl>
1501 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br />
1502 </dt>
1503 <dd>
1504 Converts a perl string into the special encoding used by rxvt-unicode,
1505 where one character corresponds to one screen cell. See
1506 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1507 </dd>
1508 <p></p>
1509 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong><br />
1510 </dt>
1511 <dd>
1512 Converts rxvt-unicodes text reprsentation into a perl string. See
1513 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1514 </dd>
1515 <p></p>
1516 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong><br />
1517 </dt>
1518 <dt><strong><a name="item_ungrab_button">$term-&gt;ungrab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong><br />
1519 </dt>
1520 <dd>
1521 Register/unregister a synchronous button grab. See the XGrabButton
1522 manpage.
1523 </dd>
1524 <p></p>
1525 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong><br />
1526 </dt>
1527 <dd>
1528 Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1529 synchronous (<code>$sync</code> is true). Also remembers the grab timestampe.
1530 </dd>
1531 <p></p>
1532 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong><br />
1533 </dt>
1534 <dd>
1535 Calls XAllowEvents with AsyncBoth for the most recent grab.
1536 </dd>
1537 <p></p>
1538 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong><br />
1539 </dt>
1540 <dd>
1541 Calls XAllowEvents with SyncBoth for the most recent grab.
1542 </dd>
1543 <p></p>
1544 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong><br />
1545 </dt>
1546 <dd>
1547 Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1548 recent grab.
1549 </dd>
1550 <p></p>
1551 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong><br />
1552 </dt>
1553 <dd>
1554 Calls XUngrab for the most recent grab. Is called automatically on
1555 evaluation errors, as it is better to lose the grab in the error case as
1556 the session.
1557 </dd>
1558 <p></p>
1559 <dt><strong><a name="item_xinternatom">$atom = $term-&gt;XInternAtom ($atom_name[, $only_if_exists])</a></strong><br />
1560 </dt>
1561 <dt><strong><a name="item_xgetatomname">$atom_name = $term-&gt;XGetAtomName ($atom)</a></strong><br />
1562 </dt>
1563 <dt><strong><a name="item_xlistproperties">@atoms = $term-&gt;XListProperties ($window)</a></strong><br />
1564 </dt>
1565 <dt><strong><a name="item_xgetwindowproperty">($type,$format,$octets) = $term-&gt;XGetWindowProperty ($window, $property)</a></strong><br />
1566 </dt>
1567 <dt><strong><a name="item_xchangewindowproperty">$term-&gt;XChangeWindowProperty ($window, $property, $type, $format, $octets)</a></strong><br />
1568 </dt>
1569 <dt><strong><a name="item_xdeleteproperty">$term-&gt;XDeleteProperty ($window, $property)</a></strong><br />
1570 </dt>
1571 <dt><strong><a name="item_defaultrootwindow">$window = $term-&gt;DefaultRootWindow</a></strong><br />
1572 </dt>
1573 <dt><strong><a name="item_xreparentwindow">$term-&gt;XReparentWindow ($window, $parent, [$x, $y])</a></strong><br />
1574 </dt>
1575 <dt><strong><a name="item_xmapwindow">$term-&gt;XMapWindow ($window)</a></strong><br />
1576 </dt>
1577 <dt><strong><a name="item_xunmapwindow">$term-&gt;XUnmapWindow ($window)</a></strong><br />
1578 </dt>
1579 <dt><strong><a name="item_xmoveresizewindow">$term-&gt;XMoveResizeWindow ($window, $x, $y, $width, $height)</a></strong><br />
1580 </dt>
1581 <dt><strong><a name="item_xtranslatecoordinates">($x, $y, $child_window) = $term-&gt;XTranslateCoordinates ($src, $dst, $x, $y)</a></strong><br />
1582 </dt>
1583 <dt><strong><a name="item_xchangeinput">$term-&gt;XChangeInput ($window, $add_events[, $del_events])</a></strong><br />
1584 </dt>
1585 <dd>
1586 Various X or X-related functions. The <code>$term</code> object only serves as
1587 the source of the display, otherwise those functions map more-or-less
1588 directory onto the X functions of the same name.
1589 </dd>
1590 <p></p></dl>
1591 <p>
1592 </p>
1593 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1594 <dl>
1595 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong><br />
1596 </dt>
1597 <dd>
1598 Adds a non-clickable title to the popup.
1599 </dd>
1600 <p></p>
1601 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong><br />
1602 </dt>
1603 <dd>
1604 Creates a separator, optionally using the character given as <code>$sepchr</code>.
1605 </dd>
1606 <p></p>
1607 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong><br />
1608 </dt>
1609 <dd>
1610 Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1611 selected.
1612 </dd>
1613 <p></p>
1614 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $cb, $initial_value)</a></strong><br />
1615 </dt>
1616 <dd>
1617 Adds a toggle/checkbox item to the popup. Teh callback gets called
1618 whenever it gets toggled, with a boolean indicating its value as its first
1619 argument.
1620 </dd>
1621 <p></p>
1622 <dt><strong>$popup-&gt;show</strong><br />
1623 </dt>
1624 <dd>
1625 Displays the popup (which is initially hidden).
1626 </dd>
1627 <p></p></dl>
1628 <p>
1629 </p>
1630 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1631 <p>This class implements timer watchers/events. Time is represented as a
1632 fractional number of seconds since the epoch. Example:</p>
1633 <pre>
1634 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1635 $term-&gt;{timer} = urxvt::timer
1636 -&gt;new
1637 -&gt;interval (1)
1638 -&gt;cb (sub {
1639 $term-&gt;{overlay}-&gt;set (0, 0,
1640 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1641 });</pre>
1642 <dl>
1643 <dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
1644 </dt>
1645 <dd>
1646 Create a new timer object in started state. It is scheduled to fire
1647 immediately.
1648 </dd>
1649 <p></p>
1650 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
1651 </dt>
1652 <dd>
1653 Set the callback to be called when the timer triggers.
1654 </dd>
1655 <p></p>
1656 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong><br />
1657 </dt>
1658 <dd>
1659 Return the time this watcher will fire next.
1660 </dd>
1661 <p></p>
1662 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
1663 </dt>
1664 <dd>
1665 Set the time the event is generated to $tstamp.
1666 </dd>
1667 <p></p>
1668 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
1669 </dt>
1670 <dd>
1671 Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1672 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1673 is automatically rescheduled at the given intervals.
1674 </dd>
1675 <p></p>
1676 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
1677 </dt>
1678 <dd>
1679 Start the timer.
1680 </dd>
1681 <p></p>
1682 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong><br />
1683 </dt>
1684 <dd>
1685 Set the event trigger time to <code>$tstamp</code> and start the timer.
1686 </dd>
1687 <p></p>
1688 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong><br />
1689 </dt>
1690 <dd>
1691 Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.
1692 </dd>
1693 <p></p>
1694 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong><br />
1695 </dt>
1696 <dd>
1697 Stop the timer.
1698 </dd>
1699 <p></p></dl>
1700 <p>
1701 </p>
1702 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1703 <p>This class implements io watchers/events. Example:</p>
1704 <pre>
1705 $term-&gt;{socket} = ...
1706 $term-&gt;{iow} = urxvt::iow
1707 -&gt;new
1708 -&gt;fd (fileno $term-&gt;{socket})
1709 -&gt;events (urxvt::EVENT_READ)
1710 -&gt;start
1711 -&gt;cb (sub {
1712 my ($iow, $revents) = @_;
1713 # $revents must be 1 here, no need to check
1714 sysread $term-&gt;{socket}, my $buf, 8192
1715 or end-of-file;
1716 });</pre>
1717 <dl>
1718 <dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />
1719 </dt>
1720 <dd>
1721 Create a new io watcher object in stopped state.
1722 </dd>
1723 <p></p>
1724 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />
1725 </dt>
1726 <dd>
1727 Set the callback to be called when io events are triggered. <code>$reventmask</code>
1728 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.
1729 </dd>
1730 <p></p>
1731 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong><br />
1732 </dt>
1733 <dd>
1734 Set the filedescriptor (not handle) to watch.
1735 </dd>
1736 <p></p>
1737 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong><br />
1738 </dt>
1739 <dd>
1740 Set the event mask to watch. The only allowed values are
1741 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1742 together, or <code>urxvt::EVENT_NONE</code>.
1743 </dd>
1744 <p></p>
1745 <dt><strong>$iow = $iow-&gt;start</strong><br />
1746 </dt>
1747 <dd>
1748 Start watching for requested events on the given handle.
1749 </dd>
1750 <p></p>
1751 <dt><strong>$iow = $iow-&gt;stop</strong><br />
1752 </dt>
1753 <dd>
1754 Stop watching for events on the given filehandle.
1755 </dd>
1756 <p></p></dl>
1757 <p>
1758 </p>
1759 <h2><a name="the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></h2>
1760 <p>This class implements idle watchers, that get called automatically when
1761 the process is idle. They should return as fast as possible, after doing
1762 some useful work.</p>
1763 <dl>
1764 <dt><strong><a name="item__24iw__3d_new_urxvt_3a_3aiw">$iw = new urxvt::iw</a></strong><br />
1765 </dt>
1766 <dd>
1767 Create a new idle watcher object in stopped state.
1768 </dd>
1769 <p></p>
1770 <dt><strong>$iw = $iw-&gt;cb (sub { my ($iw) = @_; ... })</strong><br />
1771 </dt>
1772 <dd>
1773 Set the callback to be called when the watcher triggers.
1774 </dd>
1775 <p></p>
1776 <dt><strong>$timer = $timer-&gt;start</strong><br />
1777 </dt>
1778 <dd>
1779 Start the watcher.
1780 </dd>
1781 <p></p>
1782 <dt><strong>$timer = $timer-&gt;stop</strong><br />
1783 </dt>
1784 <dd>
1785 Stop the watcher.
1786 </dd>
1787 <p></p></dl>
1788 <p>
1789 </p>
1790 <h2><a name="the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></h2>
1791 <p>This class implements process watchers. They create an event whenever a
1792 process exits, after which they stop automatically.</p>
1793 <pre>
1794 my $pid = fork;
1795 ...
1796 $term-&gt;{pw} = urxvt::pw
1797 -&gt;new
1798 -&gt;start ($pid)
1799 -&gt;cb (sub {
1800 my ($pw, $exit_status) = @_;
1801 ...
1802 });</pre>
1803 <dl>
1804 <dt><strong><a name="item__24pw__3d_new_urxvt_3a_3apw">$pw = new urxvt::pw</a></strong><br />
1805 </dt>
1806 <dd>
1807 Create a new process watcher in stopped state.
1808 </dd>
1809 <p></p>
1810 <dt><strong>$pw = $pw-&gt;cb (sub { my ($pw, $exit_status) = @_; ... })</strong><br />
1811 </dt>
1812 <dd>
1813 Set the callback to be called when the timer triggers.
1814 </dd>
1815 <p></p>
1816 <dt><strong>$pw = $timer-&gt;start ($pid)</strong><br />
1817 </dt>
1818 <dd>
1819 Tells the wqtcher to start watching for process <code>$pid</code>.
1820 </dd>
1821 <p></p>
1822 <dt><strong>$pw = $pw-&gt;stop</strong><br />
1823 </dt>
1824 <dd>
1825 Stop the watcher.
1826 </dd>
1827 <p></p></dl>
1828 <p>
1829 </p>
1830 <hr />
1831 <h1><a name="environment">ENVIRONMENT</a></h1>
1832 <p>
1833 </p>
1834 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
1835 <p>This variable controls the verbosity level of the perl extension. Higher
1836 numbers indicate more verbose output.</p>
1837 <dl>
1838 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong><br />
1839 </dt>
1840 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong><br />
1841 </dt>
1842 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong><br />
1843 </dt>
1844 <dt><strong><a name="item__3e_3d11__2d_hook_reutrn_values">&gt;=11 - hook reutrn values</a></strong><br />
1845 </dt>
1846 </dl>
1847 <p>
1848 </p>
1849 <hr />
1850 <h1><a name="author">AUTHOR</a></h1>
1851 <pre>
1852 Marc Lehmann &lt;pcg@goof.com&gt;
1853 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
1854
1855 </body>
1856
1857 </html>