123 lines
3.6 KiB
Groff
123 lines
3.6 KiB
Groff
.\" Copyright 1993 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be
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.\" included in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtSet-Arg XtMerge-Arg-Lists wid-get
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.na
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.TH XtSetArg __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
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.SH NAME
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XtSetArg, XtMergeArgLists \- set and merge ArgLists
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.SH SYNTAX
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#include <X11/Intrinsic.h>
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.HP
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int XtSetArg(Arg \fIarg\fP, String \fIname\fP, XtArgVal \fIvalue\fP);
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.HP
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ArgList XtMergeArgLists(ArgList \fIargs1\fP, Cardinal \fInum_args1\fP, ArgList
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\fIargs2\fP, Cardinal \fInum_args2\fP);
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.SH ARGUMENTS
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.IP \fIarg\fP 1i
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Specifies the name-value pair to set.
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.IP \fIargs1\fP 1i
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Specifies the first
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.BR ArgList .
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.IP \fIargs2\fP 1i
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Specifies the second
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.BR ArgList .
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.IP \fInum_args1\fP 1i
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Specifies the number of arguments in the first argument list.
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.IP \fInum_args2\fP 1i
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Specifies the number of arguments in the second argument list.
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.IP \fIname\fP 1i
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Specifies the name of the resource.
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.IP \fIvalue\fP 1i
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Specifies the value of the resource if it will fit in an
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.B XtArgVal
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or the address.
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.SH DESCRIPTION
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The
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.B XtSetArg
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function is usually used in a highly stylized manner to
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minimize the probability of making a mistake; for example:
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.LP
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.RS
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.nf
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.ft CW
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Arg args[20];
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int n;
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n = 0;
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XtSetArg(args[n], XtNheight, 100); n++;
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XtSetArg(args[n], XtNwidth, 200); n++;
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XtSetValues(widget, args, n);
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.ft R
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.fi
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.RE
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.LP
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Alternatively, an application can statically declare the argument list
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and use
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.BR XtNumber :
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.LP
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.RS
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.nf
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.ft CW
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static Args args[] = {
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{XtNheight, (XtArgVal) 100},
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{XtNwidth, (XtArgVal) 200},
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};
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XtSetValues(Widget, args, XtNumber(args));
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.ft R
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.fi
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.RE
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.LP
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Note that you should not use auto-increment or auto-decrement
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within the first argument to
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.BR XtSetArg .
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.B XtSetArg
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can be implemented as a macro that dereferences the first argument twice.
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.LP
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The
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.B XtMergeArgLists
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function allocates enough storage to hold the combined
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.B ArgList
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structures and copies them into it.
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Note that it does not check for duplicate entries.
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When it is no longer needed,
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free the returned storage by using
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.BR XtFree .
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.SH "SEE ALSO"
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XtOffset(__libmansuffix__)
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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