268 lines
7.4 KiB
Groff
268 lines
7.4 KiB
Groff
.\" Copyright (c) 1993, 1994 X Consortium
|
|
.\"
|
|
.\" Permission is hereby granted, free of charge, to any person obtaining a
|
|
.\" copy of this software and associated documentation files (the "Software"),
|
|
.\" to deal in the Software without restriction, including without limitation
|
|
.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
.\" and/or sell copies of the Software, and to permit persons to whom the
|
|
.\" Software furnished to do so, subject to the following conditions:
|
|
.\"
|
|
.\" The above copyright notice and this permission notice shall be included in
|
|
.\" all copies or substantial portions of the Software.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
.\" THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
.\" WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
|
|
.\" OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
.\" SOFTWARE.
|
|
.\"
|
|
.\" Except as contained in this notice, the name of the X Consortium shall not
|
|
.\" be used in advertising or otherwise to promote the sale, use or other
|
|
.\" dealing in this Software without prior written authorization from the
|
|
.\" X Consortium.
|
|
.\"
|
|
.ds tk X Toolkit
|
|
.ds xT X Toolkit Intrinsics \- C Language Interface
|
|
.ds xI Intrinsics
|
|
.ds xW X Toolkit Athena Widgets \- C Language Interface
|
|
.ds xL Xlib \- C Language X Interface
|
|
.ds xC Inter-Client Communication Conventions Manual
|
|
.ds Rn 3
|
|
.ds Vn 2.2
|
|
.hw XtDisplay-Initialize XtOpen-Display XtClose-Display XtDatabase XtScreen-Database wid-get
|
|
.na
|
|
.de Ds
|
|
.nf
|
|
.\\$1D \\$2 \\$1
|
|
.ft 1
|
|
.ps \\n(PS
|
|
.\".if \\n(VS>=40 .vs \\n(VSu
|
|
.\".if \\n(VS<=39 .vs \\n(VSp
|
|
..
|
|
.de De
|
|
.ce 0
|
|
.if \\n(BD .DF
|
|
.nr BD 0
|
|
.in \\n(OIu
|
|
.if \\n(TM .ls 2
|
|
.sp \\n(DDu
|
|
.fi
|
|
..
|
|
.de FD
|
|
.LP
|
|
.KS
|
|
.TA .5i 3i
|
|
.ta .5i 3i
|
|
.nf
|
|
..
|
|
.de FN
|
|
.fi
|
|
.KE
|
|
.LP
|
|
..
|
|
.de IN \" send an index entry to the stderr
|
|
..
|
|
.de C{
|
|
.KS
|
|
.nf
|
|
.D
|
|
.\"
|
|
.\" choose appropriate monospace font
|
|
.\" the imagen conditional, 480,
|
|
.\" may be changed to L if LB is too
|
|
.\" heavy for your eyes...
|
|
.\"
|
|
.ie "\\*(.T"480" .ft L
|
|
.el .ie "\\*(.T"300" .ft L
|
|
.el .ie "\\*(.T"202" .ft PO
|
|
.el .ie "\\*(.T"aps" .ft CW
|
|
.el .ft R
|
|
.ps \\n(PS
|
|
.ie \\n(VS>40 .vs \\n(VSu
|
|
.el .vs \\n(VSp
|
|
..
|
|
.de C}
|
|
.DE
|
|
.R
|
|
..
|
|
.de Pn
|
|
.ie t \\$1\fB\^\\$2\^\fR\\$3
|
|
.el \\$1\fI\^\\$2\^\fP\\$3
|
|
..
|
|
.de ZN
|
|
.ie t \fB\^\\$1\^\fR\\$2
|
|
.el \fI\^\\$1\^\fP\\$2
|
|
..
|
|
.de NT
|
|
.ne 7
|
|
.ds NO Note
|
|
.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
|
|
.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
.TB
|
|
.ce
|
|
\\*(NO
|
|
.ie n .sp
|
|
.el .sp 5p
|
|
.if '\\$1'C' .ce 99
|
|
.if '\\$2'C' .ce 99
|
|
.in +5n
|
|
.ll -5n
|
|
.R
|
|
..
|
|
. \" Note End -- doug kraft 3/85
|
|
.de NE
|
|
.ce 0
|
|
.in -5n
|
|
.ll +5n
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
..
|
|
.ny0
|
|
.TH XtDisplayInitialize __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
|
|
.SH NAME
|
|
XtDisplayInitialize, XtOpenDisplay, XtDatabase, XtScreenDatabase, XtCloseDisplay \- initialize, open, or close a display
|
|
.SH SYNTAX
|
|
.HP
|
|
void XtDisplayInitialize(XtAppContext \fIapp_context\fP, Display
|
|
*\fIdisplay\fP, String \fIapplication_name\fP, String \fIapplication_class\fP,
|
|
XrmOptionDescRec *\fIoptions\fP, Cardinal \fInum_options\fP, int *\fIargc\fP,
|
|
String *\fIargv\fP);
|
|
.HP
|
|
Display *XtOpenDisplay(XtAppContext \fIapp_context\fP, String
|
|
\fIdisplay_string\fP, String \fIapplication_name\fP, String
|
|
\fIapplication_class\fP, XrmOptionDescRec *\fIoptions\fP, Cardinal
|
|
\fInum_options\fP, int *\fIargc\fP, String *\fIargv\fP);
|
|
.HP
|
|
void XtCloseDisplay(Display *\fIdisplay\fP);
|
|
.HP
|
|
XrmDatabase XtDatabase(Display *\fIdisplay\fP);
|
|
.HP
|
|
XrmDatabase XtScreenDatabase(Screen* \fIscreen\fP);
|
|
.SH ARGUMENTS
|
|
.IP \fIargc\fP 1i
|
|
Specifies a pointer to the number of command line parameters.
|
|
.IP \fIargv\fP 1i
|
|
Specifies the command line parameters.
|
|
.IP \fIapp_context\fP 1i
|
|
Specifies the application context.
|
|
.ds Ac , which usually is the generic name for all instances of this application
|
|
.IP \fIapplication_class\fP 1i
|
|
Specifies the class name of this application\*(Ac.
|
|
.IP \fIapplication_name\fP 1i
|
|
Specifies the name of the application instance.
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the display\*(Di.
|
|
Note that a display can be in at most one application context.
|
|
.IP \fInum_options\fP 1i
|
|
Specifies the number of entries in the options list.
|
|
.IP \fIoptions\fP 1i
|
|
Specifies how to parse the command line for any application-specific resources.
|
|
The options argument is passed as a parameter to
|
|
.ZN XrmParseCommand .
|
|
For further information,
|
|
see \fI\*(xL\fP.
|
|
.IP \fIscreen\fP 1i
|
|
Specifies the screen whose resource database is to be returned.
|
|
.SH DESCRIPTION
|
|
The
|
|
.ZN XtDisplayInitialize
|
|
function builds the resource database, calls the Xlib
|
|
.ZN XrmParseCommand
|
|
function to parse the command line,
|
|
and performs other per display initialization.
|
|
After
|
|
.ZN XrmParseCommand
|
|
has been called,
|
|
argc and argv contain only those parameters that
|
|
were not in the standard option table or in the table specified by the
|
|
options argument.
|
|
If the modified argc is not zero,
|
|
most applications simply print out the modified argv along with a message
|
|
listing the allowable options.
|
|
On UNIX-based systems,
|
|
the application name is usually the final component of argv[0].
|
|
If the synchronize resource is
|
|
.ZN True
|
|
for the specified application,
|
|
.ZN XtDisplayInitialize
|
|
calls the Xlib
|
|
.ZN XSynchronize
|
|
function to put Xlib into synchronous mode for this display connection.
|
|
If the reverseVideo resource is
|
|
.ZN True ,
|
|
the \*(xI exchange
|
|
.ZN XtDefaultForeground
|
|
and
|
|
.ZN XtDefaultBackground
|
|
for widgets created on this display.
|
|
(See Section 9.6.1).
|
|
.LP
|
|
The
|
|
.ZN XtOpenDisplay
|
|
function calls
|
|
.ZN XOpenDisplay
|
|
the specified display name.
|
|
If display_string is NULL,
|
|
.ZN XtOpenDisplay
|
|
uses the current value of the \-display option specified in argv
|
|
and if no display is specified in argv,
|
|
uses the user's default display (on UNIX-based systems,
|
|
this is the value of the DISPLAY environment variable).
|
|
.LP
|
|
If this succeeds, it then calls
|
|
.ZN XtDisplayInitialize
|
|
and pass it the opened display and
|
|
the value of the \-name option specified in argv as the application name.
|
|
If no name option is specified,
|
|
it uses the application name passed to
|
|
.ZN XtOpenDisplay .
|
|
If the application name is NULL,
|
|
it uses the last component of argv[0].
|
|
.ZN XtOpenDisplay
|
|
returns the newly opened display or NULL if it failed.
|
|
.LP
|
|
.ZN XtOpenDisplay
|
|
is provided as a convenience to the application programmer.
|
|
.LP
|
|
The
|
|
.ZN XtCloseDisplay
|
|
function closes the specified display as soon as it is safe to do so.
|
|
If called from within an event dispatch (for example, a callback procedure),
|
|
.ZN XtCloseDisplay
|
|
does not close the display until the dispatch is complete.
|
|
Note that applications need only call
|
|
.ZN XtCloseDisplay
|
|
if they are to continue executing after closing the display;
|
|
otherwise, they should call
|
|
.ZN XtDestroyApplicationContext
|
|
or just exit.
|
|
.LP
|
|
The
|
|
.ZN XtDatabase
|
|
function returns the fully merged resource database that was built by
|
|
.ZN XtDisplayInitialize
|
|
associated with the display that was passed in.
|
|
If this display has not been initialized by
|
|
.ZN XtDisplayInitialize ,
|
|
the results are not defined.
|
|
.LP
|
|
The
|
|
.ZN XtScreenDatabase
|
|
function returns the fully merged resource database associated with the
|
|
specified screen. If the \fIscreen\fP does not belong to a
|
|
.ZN Display
|
|
initialized by
|
|
.ZN XtDisplayInitialize ,
|
|
the results are undefined.
|
|
.SH "SEE ALSO"
|
|
XtAppCreateShell(__libmansuffix__),
|
|
XtCreateApplicationContext(__libmansuffix__)
|
|
.br
|
|
\fI\*(xT\fP
|
|
.br
|
|
\fI\*(xL\fP
|