1 .\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
3 .\" Permission is hereby granted, free of charge, to any person obtaining
4 .\" a copy of this software and associated documentation files (the
5 .\" "Software"), to deal in the Software without restriction, including
6 .\" without limitation the rights to use, copy, modify, merge, publish,
7 .\" distribute, sublicense, and/or sell copies of the Software, and to
8 .\" permit persons to whom the Software is furnished to do so, subject to
9 .\" the following conditions:
11 .\" The above copyright notice and this permission notice shall be included
12 .\" in all copies or substantial portions of the Software.
14 .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 .\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 .\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17 .\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 .\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 .\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 .\" OTHER DEALINGS IN THE SOFTWARE.
22 .\" Except as contained in this notice, the name of the X Consortium shall
23 .\" not be used in advertising or otherwise to promote the sale, use or
24 .\" other dealings in this Software without prior written authorization
25 .\" from the X Consortium.
27 .\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
28 .\" Digital Equipment Corporation
30 .\" Portions Copyright \(co 1990, 1991 by
33 .\" Permission to use, copy, modify and distribute this documentation for
34 .\" any purpose and without fee is hereby granted, provided that the above
35 .\" copyright notice appears in all copies and that both that copyright notice
36 .\" and this permission notice appear in all copies, and that the names of
37 .\" Digital and Tektronix not be used in in advertising or publicity pertaining
38 .\" to this documentation without specific, written prior permission.
39 .\" Digital and Tektronix makes no representations about the suitability
40 .\" of this documentation for any purpose.
41 .\" It is provided ``as is'' without express or implied warranty.
44 .ds xT X Toolkit Intrinsics \- C Language Interface
45 .ds xW Athena X Widgets \- C Language X Toolkit Interface
46 .ds xL Xlib \- C Language X Interface
47 .ds xC Inter-Client Communication Conventions Manual
54 .\".if \\n(VS>=40 .vs \\n(VSu
55 .\".if \\n(VS<=39 .vs \\n(VSp
78 .de IN \" send an index entry to the stderr
85 .\" choose appropriate monospace font
86 .\" the imagen conditional, 480,
87 .\" may be changed to L if LB is too
88 .\" heavy for your eyes...
90 .ie "\\*(.T"480" .ft L
91 .el .ie "\\*(.T"300" .ft L
92 .el .ie "\\*(.T"202" .ft PO
93 .el .ie "\\*(.T"aps" .ft CW
96 .ie \\n(VS>40 .vs \\n(VSu
104 .ie t \\$1\fB\^\\$2\^\fR\\$3
105 .el \\$1\fI\^\\$2\^\fP\\$3
108 .ie t \fB\^\\$1\^\fR\\$2
109 .el \fI\^\\$1\^\fP\\$2
112 .ie t <\fB\\$1\fR>\\$2
118 .if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
119 .if \\n(.$ .if !'\\$1'C' .ds NO \\$1
133 . \" Note End -- doug kraft 3/85
142 .TH XOpenDisplay __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
144 XOpenDisplay, XCloseDisplay \- connect or disconnect to X server
147 Display *XOpenDisplay\^(\^char *\fIdisplay_name\fP\^);
149 int XCloseDisplay\^(Display *\fIdisplay\fP\^);
152 Specifies the connection to the X server.
153 .IP \fIdisplay_name\fP 1i
154 Specifies the hardware display name, which determines the display
155 and communications domain to be used.
156 On a POSIX-conformant system, if the display_name is NULL,
157 it defaults to the value of the DISPLAY environment variable.
158 .IN "Environment" "DISPLAY"
164 structure that serves as the
165 connection to the X server and that contains all the information
168 connects your application to the X server through TCP
169 or DECnet communications protocols,
170 or through some local inter-process communication protocol.
172 .IN "Protocol" "DECnet"
173 If the hostname is a host machine name and a single colon (:)
174 separates the hostname and display number,
176 connects using TCP streams.
177 If the hostname is not specified,
178 Xlib uses whatever it believes is the fastest transport.
179 If the hostname is a host machine name and a double colon (::)
180 separates the hostname and display number,
182 connects using DECnet.
183 A single X server can support any or all of these transport mechanisms
185 A particular Xlib implementation can support many more of these transport
191 returns a pointer to a
198 does not succeed, it returns NULL.
199 After a successful call to
201 all of the screens in the display can be used by the client.
202 The screen number specified in the display_name argument is returned
208 You can access elements of the
212 structures only by using the information macros or functions.
213 For information about using macros and functions to obtain information from
221 function closes the connection to the X server for the display specified in the
223 structure and destroys all windows, resource IDs
231 or other resources that the client has created
232 on this display, unless the close-down mode of the resource has been changed
234 .ZN XSetCloseDownMode ).
235 Therefore, these windows, resource IDs, and other resources should never be
236 referenced again or an error will be generated.
237 Before exiting, you should call
239 explicitly so that any pending errors are reported as
252 AllPlanes(__libmansuffix__),
253 XFlush(__libmansuffix__),
254 XSetCloseDownMode(__libmansuffix__)