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From: tsai@Veritas.COM (Cary Tsai)
Newsgroups: comp.windows.x
Subject: Help!! Got CoreDump when I try to destroy MOTIF shell widget..
Message-ID: <1991Jan10.231010.5189@Veritas.COM>
Date: 10 Jan 91 23:10:10 GMT
Organization: VERITAS Software
Lines: 58


I want to destroy a dialog window from its "Cancel" button, I got core dump
all the time. Could any one tell me what's wrong with the following proc.

/*
	compile this program with MOTIF 1.1
*/
#include <stdio.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <Xm/Xm.h>
#include <Xm/Form.h>
#include <Xm/PushB.h>

void newWin(), closeCB();

void closeCB(w, client, data)
Widget w;
Widget client;
caddr_t data;
{
	XtDestroyWidget(client);
}

main(argc, argv)
int argc;
char **argv;
{
	Widget top, b1;

	top = XtInitialize(argv[0], "Ask", NULL, 0, &argc, argv);
	
	b1 = XtCreateManagedWidget("Push me to create a dialog box", 
			xmPushButtonWidgetClass, top, NULL, 0);
	XtAddCallback(b1, XmNactivateCallback, 
				newWin, top);

	XtRealizeWidget(top);
	XtMainLoop();
}

void newWin(w, client, data)
Widget w;
caddr_t client;
caddr_t data;
{
	Widget top, b1, parent=(Widget) client;

	top = XmCreateFormDialog(w, "New Window", NULL, 0);

	b1 = XtCreateManagedWidget("Push me to close this box", 
			xmPushButtonWidgetClass, top, NULL, 0);
	XtAddCallback(b1, XmNactivateCallback, 
				closeCB, top);

	XtManageChild(top);
}
/* end */