man XtSetArg (Fonctions bibliothèques) - set and merge ArgLists
NAME
XtSetArg, XtMergeArgLists - set and merge ArgLists
SYNTAX
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