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XtSetArg(3Xt)
X11R6
NAME
  XtSetArg, XtMergeArgLists - set and merge ArgLists

SYNOPSIS
  XtSetArg(arg, name, value)
	  Arg arg;
	  String name;
	  XtArgVal value;

  ArgList XtMergeArgLists(args1, num_args1, args2, num_args2)
	  ArgList args1;
	  Cardinal num_args1;
	  ArgList args2;
	  Cardinal num_args2;

ARGUMENTS
  arg Specifies the name-value pair to set.

  args1
      Specifies the first ArgList.

  args2
      Specifies the second ArgList.

  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 XtArgVal or
      the address.

DESCRIPTION
  The XtSetArg 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 XtNumber:

       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 XtSetArg.  XtSetArg can be implemented as a macro that
  dereferences the first argument twice.

  The XtMergeArgLists function allocates enough storage to hold the combined
  ArgList 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 XtFree.

SEE ALSO
  XtOffset(3Xt)

  X Toolkit Intrinsics -- C Language Interface

  Xlib -- C Language X Interface

Index for Section 3Xt

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