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# Content
1 .TH XCB 1 "Oct 6 1994" "X Version 11"
3 xcb \- X Cut Buffers \- Pigeon holes for your cut and paste selections.
5 .B xcb
6 [\fIXt option\fP]
7 [\fB\-l\fP \fIlayout\fP]
8 [\fB\-n\fP \fIcount\fP]
9 [\fB\-p\fP|\fB\-s\fP|\fB\-S\fP \fIlist\fP]
10 [\fB\-r\fP \fIcount\fP]
12 \fIXcb\fP provides easy access to the cut buffers built into every X server.
13 It allows the buffers to be manipulated either via the command line,
14 or with the mouse in a point and click manner.
15 The buffers can be used as holding pens to store and retrieve
16 arbitrary data fragments.
17 Any number of cut buffers may be created,
18 so any number of different pieces of data can be saved and recalled later.
19 By default, 8 cut buffers are created.
20 The program is designed primarily for use with textual data.
21 .LP
22 \fIXcb\fP has two modes of operation.
23 Normally \fIxcb\fP provides an array of windows on your display,
24 one per cut buffer, tiled horizontally, vertically, or in some
25 user specified layout.
26 Each window displays the contents of its respective cut buffer.
27 Data can be cut from and pasted to the windows in a similar manner
28 to xterm.
29 The buffers can also be rotated.
30 .LP
31 In task mode, \fIxcb\fP lets you access the cut buffers from the command line.
32 Cut buffers can be loaded from stdin,
33 copied or concatenated to stdout,
34 loaded using the current PRIMARY selection,
35 or rotated an arbitrary number of positions.
36 In this mode of operation, \fIxcb\fP performs the requested task
37 and then exits.
38 It does not create any windows and
39 has no interaction with the mouse or keyboard.
41 \fIXcb\fP supports the full set of X Toolkit Intrinsics options,
42 as well as those listed below.
43 \fIXcb\fP options can appear in any order.
44 The presence of the
45 \fB\-p\fP,
46 \fB\-r\fP,
47 \fB\-s\fP or
48 \fB\-S\fP
49 options causes \fIxcb\fP to execute in task mode,
50 described above.
51 .IP "\fB\-l\fP \fIlayout\fP"
52 This option controls the geometry arrangement of \fIxcb's\fP subwindows.
53 It is the command line equivalent of the \fB.layout\fP resource,
54 described below.
55 .LP
56 .IP "\fB\-n\fP \fIcount\fP"
57 Create \fIcount\fP cut buffers.
58 \fICount\fP can be any integer greater than zero.
59 This option is the command line equivalent of the \fB.bufferCount\fP
60 resource, described below.
61 .LP
62 .IP "\fB\-u\fP"
63 Use utf-8 instead of the current locale settings when executing in task mode
64 and doing I/O.
65 .LP
66 .IP "\fB\-V\fP"
67 Print the xcb release version number and exit immediately.
68 .LP
69 .IP "\fB\-p\fP \fIlist\fP"
70 Print the contents of the listed buffer(s) on stdout.
71 The buffered data is printed exactly as it is stored in the server.
72 Selecting two or more buffers has the effect of concatenating
73 the data on stdout.
74 The cut buffers are numbered from 0... onwards.
75 The list can be either a single digit,
76 a comma separated list of digits,
77 a range of the form m\-n,
78 or some combination of lists and ranges.
79 The buffers are printed in listed order,
80 so repeated numbers in the list can be used to
81 duplicate buffer contents.
82 .LP
83 .IP "\fB\-r\fP \fIcount\fP"
84 Rotate the buffers by \fIcount\fP positions.
85 \fICount\fP can be any integer, positive or negative.
86 This option may be used in conjunction with the
87 \fB\-n\fP \fIcount\fP option to rotate
88 a specific number of buffers.
89 If the \fB\-n\fP option is not used, \fIxcb\fP will rotate
90 the number of buffers given by the \fB.bufferCount\fP resource.
91 .LP
92 .IP "\fB\-s\fP \fIlist\fP"
93 Store the data from stdin in the listed buffer(s).
94 If the list refers to two or more buffers, the input data is duplicated
95 in each buffer.
96 Refer to the \fB\-p\fP option for the definition of a list.
97 .LP
98 .IP "\fB\-S\fP \fIlist\fP"
99 Store the current PRIMARY selection data in the listed buffer(s).
100 The data is converted to a string representation.
101 If the list refers to two or more buffers, the PRIMARY selection is
102 duplicated in each buffer.
103 Refer to the \fB\-p\fP option for the definition of a list.
104 Under the \-S option xcb waits for the nominated cut buffer's contents
105 to change before exiting. If no change is detected within
106 3 seconds, xcb exits with a non-zero return code.
108 The \fIxcb\fP widget hierarchy consists of a collection of
109 custom buffer widgets, one per cut buffer.
110 In the Athena version of the program, these buffer widgets are all
111 contained within a single Athena form widget.
112 In the Motif version of the program, they are
113 each enclosed by Motif frame widgets, and the frame
114 widgets are all contained within a single Motif RowColumn widget.
115 .LP
116 The names of the buffer widgets are "buffer0", "buffer1",
117 "buffer2", .... etc., and their class name is "Buffer".
118 Each buffer widget supports all the standard core widget
119 resources, plus the \fB\.foreground\fP and \fB\.fontSet\fP resources.
120 .LP
121 Application wide resources are as follows:
122 .br
123 .sp 1
124 .nf
125 \fB\.bufferCount\fP (default value 8)
126 .in +8
127 This is the number of buffer widgets to create.
128 Any number of widgets (greater than zero) can be created.
129 .in -8
130 .sp 1
131 \fB\.layout\fP (default value "h")
132 .in +8
133 Only the first character of the resource value is significant.
134 This is the geometry arrangement to apply in the container widget.
135 The layout can be "h" (horizontal), "v" (vertical), or some
136 other value to disable the inbuilt geometry code and specify
137 the layout via your X resources. An example is provided in the
138 application default resources file.
139 .in -8
140 .fi
142 \fIXcb's\fP input semantics are coded into a Toolkit translation table.
143 The default bindings have been chosen to conform with the default
144 configuration of other cut and paste clients, such as xterm.
145 The bindings may be altered or overridden according to your needs.
146 The actions functions provided by \fIxcb\fP are:\-
147 .br
148 .sp 1
149 .ns
150 .ta 16n
151 .nf
152 cut() causes the contents of the chosen cut buffer to become
153 the PRIMARY selection. The window contents, if any,
154 are highlighted, and can then be pasted into other
155 cut buffers or applications.
156 .sp 1
157 paste() causes the value of the PRIMARY selection to be
158 converted into text and pasted into the chosen cut
159 buffer, overwriting any previous buffer contents.
160 If no PRIMARY selection is present, \fIxcb\fP pastes
161 the contents of cut buffer zero into the chosen buffer.
162 .sp 1
163 clear() clears the chosen cut buffer.
164 .sp 1
165 rotate(NN) rotates the cut buffers by NN positions. NN may
166 be any positive or negative number.
167 .sp 1
168 refresh() causes the cut buffer window to be cleared and redrawn.
169 .sp 1
170 selreq() this action function handles paste requests
171 from other clients, or other \fIxcb\fP windows.
172 It should always be bound to SelectionRequest events.
173 .sp 1
174 selclear() this action function responds to the loss of
175 ownership of the PRIMARY selection property.
176 It should always be bound to SelectionClear events.
177 .sp 1
178 quit() causes \fIxcb\fP to terminate.
179 .fi
180 .ta 8n
181 .sp 1
182 The default bindings are as follows:\-
183 .sp 1
184 .ta 20n
185 .nf
186 <Btn1Down>: cut() \\n\\
187 Shift <Btn2Down>: clear() \\n\\
188 <Btn2Down>: paste() \\n\\
189 Shift <Btn3Down>: rotate(-1) \\n\\
190 <Btn3Down>: rotate(1) \\n\\
191 <Key>Left: rotate(-1) \\n\\
192 <Key>Right: rotate(1) \\n\\
193 <Key>Up: rotate(-1) \\n\\
194 <Key>Down: rotate(1) \\n\\
195 <Key>q: quit() \\n\\
196 <SelReq>: selreq() \\n\\
197 <SelClr>: selclear()
198 .fi
199 .ta 8n
200 .sp 1
202 The following are some examples of \fIxcb\fP task mode usage:\-
203 .sp 1
204 xcb \-s 0\-7 < /dev/null
205 .br
206 This clears the first 8 cut buffers in your server.
207 .sp 1
208 echo "G'day." | xcb \-display bigears:0.0 \-s 1,3,5,7
209 .br
210 This loads the string "G'day." into four of the cut buffers
211 on the display "bigears".
212 .sp 1
213 xsendevent -win buffer5 '<Btn1Down>'
214 .br
215 This uses the program xsendevent to send a synthetic mouse click event
216 to an xcb subwindow, thereby making that window the owner of
217 the PRIMARY selection.
218 .sp 1
219 ls \`xcb \-p 2,3\`
220 .br
221 This produces a listing of all the files named in
222 cut buffers 2 and 3.
223 .br
224 .sp 1
225 xcb \-p 0\-7 | xcb \-s 0
226 .br
227 This concatenates the values in the first 8 cut buffers, and places
228 the result back in cut buffer zero.
229 .sp 1
230 xcb -S 0 && xcb -p 0
231 .br
232 The first command copies the current PRIMARY selection
233 into the first cut buffer. If the copy succeeds, then
234 the second command prints that data on stdout.
235 .br
236 .sp 1
237 .nf
238 for i in 0 1 2 3 4 5 6 7
239 do
240 xcb \-p $i > $HOME/.xcb/$i
241 done
242 for i in 0 1 2 3 4 5 6 7
243 do
244 xcb \-s $i < $HOME/.xcb/$i
245 done
246 .fi
247 This first loop saves the contents of each of the cut buffers
248 in a separate file under your home directory. The second loop
249 restores the cut buffer contents from those files.
250 When placed in your .logout and .login scripts respectively,
251 the commands are a simple method of preserving your cut buffers
252 across login sessions.
253 .sp 1
254 .nf
255 function g {
256 echo "$1\\\\c" | xcb \-s 7
257 grep "$@"
258 }
259 function vg {
260 vi +/\`xcb \-p 7\` "$@"
261 }
262 .fi
263 These two shell functions exemplify a simple mechanism for saving and
264 reusing regular expressions.
265 The first function saves the regex used for grep\-ing into
266 cut buffer 7. The second function reuses the most recent
267 grep regex as a search command in vi.
268 There is considerable scope for expanding and improving these ideas.
270 xterm(1), xcutsel(1), xclipboard(1), xprop(1)
271 .br
272 Athena Widget Set \- C Language Interface
273 .br
274 Motif Programmers Reference Guide
276 Current Maintainer (I18n version)
277 .br
278 Marc Lehmann
279 .br
280 E\-mail: pcg\
281 .br
282 .sp 1
283 Original Author
284 .br
285 Farrell McKay
286 .br
287 E\-mail: Farrell.McKay\
288 .br
289 .sp 1
290 XView modifications provided by Danny Vanderryn
291 .br
292 E\-mail: dvanderr\
294 Copyright (C) 1992,1993,1994 by Farrell McKay.
295 .br
296 .sp 1
297 Permission to use, copy, modify, and distribute this software and its
298 documentation for any purpose and without fee is hereby granted, provided
299 that the above copyright notice appears in all copies and that both that
300 copyright notice and this permission notice appear in supporting
301 documentation. This software is provided "as is" without express or
302 implied warranty.
303 .SH "BUGS :\-)"
304 Xlib's underlying protocol for moving selection data
305 between client and server can sometimes be slow,
306 depending on the amount of data involved.
307 Do not expect fast performance if your selections are
308 big or you want to store big files in your cut buffers!
309 ("big" means, say, over 10k bytes \- but your mileage
310 may vary).