Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!bloom-beacon!earth.cray.COM!jlf
From: jlf@earth.cray.COM (John Freeman)
Newsgroups: comp.windows.x
Subject: Re:  Help with the list widget
Message-ID: <8904131446.AA28412@thelake.cray.com>
Date: 13 Apr 89 14:46:48 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 59

> Does anyone have any helpful hints or code using the List widget.

Here is a simple program using the list widget - note that it looks
suspiciously like a menu.  Hope this helps.
--------------------------------------------------------------------------------
#include <stdio.h>
#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>
#include <X11/List.h>

String the_list[] = {
    "select me!",
    "no, me!",
    "but not:",
    "quit",
    NULL
};


/* ARGSUSED */
void Activate(w, closure, listp)
    Widget w;
    caddr_t closure;
    XtListReturnStruct *listp;
{
    /** A practical use would be to use a switch & case here or a jump table **/
printf( "button \"%s\" was pressed, index = %d\n",listp->string, listp->index );
    if (listp->index == 3) {
	printf("List Widget Demo exiting\n");
	exit(0);
    }
}

void main(argc, argv)
    unsigned int argc;
    char **argv;
{
    Widget toplevel;
    static XtCallbackRec callbacks[] = {
      { Activate, NULL },
      { NULL, NULL },
    };

    static Arg argies[] = {
      { XtNlist, (XtArgVal)the_list },
      { XtNdefaultColumns, (XtArgVal)1 },
      { XtNforceColumns, (XtArgVal)True },
      { XtNverticalList, (XtArgVal)True },
      { XtNcallback, (XtArgVal)callbacks },
    };

    toplevel = XtInitialize( NULL, "List Widget Demo", NULL, 0, &argc, argv );

    XtCreateManagedWidget( "list", listWidgetClass, toplevel,
			   argies, XtNumber(argies) );
    
    XtRealizeWidget(toplevel);
    XtMainLoop();
}