127 lines
4.6 KiB
Groff
127 lines
4.6 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 XtAllocate-GC wid-get
|
|
.na
|
|
.de Ds
|
|
.nf
|
|
.\\$1D \\$2 \\$1
|
|
.ft CW
|
|
.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 IN \" send an index entry to the stderr
|
|
..
|
|
.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
|
|
..
|
|
.ny0
|
|
.TH XtAllocateGC __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
|
|
.SH NAME
|
|
XtAllocateGC \- obtain a sharable GC with modifiable fields
|
|
.SH SYNTAX
|
|
.HP
|
|
GC XtAllocateGC(Widget \fIw\fP, Cardinal \fIdepth\fP, XtGCMask
|
|
\fIvalue_mask\fP, XGCValues *\fIvalues\fP, XtGCMask \fIdynamic_mask\fP,
|
|
XtGCMask \fIunused_mask\fP);
|
|
.SH ARGUMENTS
|
|
.IP \fIvalues\fP 1i
|
|
Specifies the actual values for this GC.
|
|
.ds Vm fields of the values are specified
|
|
.IP \fIvalue_mask\fP 1i
|
|
Specifies which \*(Vm.
|
|
.IP \fIw\fP 1i
|
|
Specifies the widget.
|
|
.IP \fIdepth\fP 1i
|
|
Specifies the depth for which the returned GC is valid, or 0.
|
|
.IP \fIdynamic_mask\fP 1i
|
|
Specifies the fields of the GC that will be modified by the caller.
|
|
.IP \fIunused_mask\fP 1i
|
|
Specifies the fields of the GC that will not be needed by the caller.
|
|
.SH DESCRIPTION
|
|
The
|
|
.ZN XtAllocateGC
|
|
function returns a sharable GC that may be modified by the client.
|
|
The \fIscreen\fP field of the specified widget or of the nearest
|
|
widget ancestor of the specified object and the specified \fIdepth\fP
|
|
argument supply the root and drawable depths for which the GC is to
|
|
be valid. If \fIdepth\fP is zero the depth is taken from the \fIdepth\fP
|
|
field of the specified widget or of the nearest widget ancestor of the
|
|
specified object.
|
|
.LP
|
|
The \fIvalue_mask\fP argument specifies the fields of the GC that will
|
|
be initialized with the respective members of the \fIvalues\fP structure.
|
|
The \fIdynamic_mask\fP argument specifies fields that the caller intends
|
|
to modify during program execution. The caller must ensure that the
|
|
corresponding GC field is set prior to each use of the GC. The
|
|
\fIunused_mask\fP argument specifies fields of the GC that are of no
|
|
interest to the caller. The caller may make no assumptions about the
|
|
contents of any fields specified in \fIunused_mask\fP. The caller may
|
|
assume that at all times all fields not specified in either
|
|
\fIdynamic_mask\fP or \fIunused_mask\fP have their default value if
|
|
not specified in \fIvalue_mask\fP or the value specified by \fIvalues\fP.
|
|
If a field is specified in both \fIvalue_mask\fP and \fPdynamic_mask\fP,
|
|
the effect is as if it were specified only in \fIdynamic_mask\fP and
|
|
then immediately set to the value in \fIvalues\fP. If a field is set
|
|
in \fIunused_mask\fP and also in either \fIvalue_mask\fP or
|
|
\fIdynamic_mask\fP, the specification in \fIunused_mask\fP is ignored.
|
|
.LP
|
|
.ZN XtAllocateGC
|
|
tries to minimize the number of unique GCs created by comparing the
|
|
arguments with those of previous calls and returning an existing GC
|
|
when there are no conflicts.
|
|
.ZN XtAllocateGC
|
|
may modify and return an existing GC if it was allocated with a nonzero
|
|
\fIunused_mask\fP.
|
|
.SH "SEE ALSO"
|
|
.ZN XtGetGC
|
|
.br
|
|
\fI\*(xT\fP
|
|
.br
|
|
\fI\*(xL\fP
|