XtSetArg
NAME
XtSetArg, XtMergeArgLists - set and merge ArgLists
SYNTAX
int XtSetArg(Arg arg, String name, XtArgVal value);
ArgList XtMergeArgLists(ArgList args1, Cardinal num_args1, ArgList
args2, Cardinal num_args2);
ARGUMENTS
arg
Specifies the name-value pair to set.
args1
Specifies the first
args2
Specifies the second
num_args1
Specifies the number of arguments in the first argument list.
num_args2
Specifies the number of arguments in the second argument list.
name
Specifies the name of the resource.
value
Specifies the value of the resource if it will fit in an
or the address.
DESCRIPTION
The
function is usually used in a highly stylized manner to
minimize the probability of making a mistake; for example:
Arg args[20];
int n;
n = 0;
XtSetArg(args[n], XtNheight, 100); n++;
XtSetArg(args[n], XtNwidth, 200); n++;
XtSetValues(widget, args, n);
Alternatively, an application can statically declare the argument list
and use
static Args args[] = {
{XtNheight, (XtArgVal) 100},
{XtNwidth, (XtArgVal) 200},
};
XtSetValues(Widget, args, XtNumber(args));
Note that you should not use auto-increment or auto-decrement
within the first argument to
can be implemented as a macro that dereferences the first argument twice.
The
function allocates enough storage to hold the combined
structures and copies them into it.
Note that it does not check for duplicate entries.
When it is no longer needed,
free the returned storage by using
SEE ALSO
XtOffset(3Xt)
