test17.c

安装DDD之前

#if 0
To:          [e-mail]
From:        Steven G. Kargl <[e-mail]>
Subject:     MainW.c is killing me.
Date:        Tue, 7 Sep 1999 14:43:31 -0700 (PDT)

Its me, again.

Well, I spent all weekend trying to understand MainW.c, testall,
and why my patch from last week failed to fix dynapix.  I forgot
a MainWindow could be a child widget to some other manager widget.
Doh!

So, I download lesstif-current with a date of 990907.  I do not
alter any sources.

The following program when compiled and linked against Lesstifs
1.2 library produces a segmentation fault.  It compiles and runs
with OSF Motif 1.2.
#endif


#include <Xm/MainW.h>

int main(int argc, char *argv[]) {

	Widget toplevel, main1, main2, menu1, menu2;
	XtAppContext app;
	XmString text;

	XtSetLanguageProc(NULL, NULL, NULL);

	toplevel = XtVaAppInitialize(&app, "t", NULL, 0, &argc, argv,
        NULL, NULL);

	main1 = XtVaCreateManagedWidget("main1",
        xmMainWindowWidgetClass, toplevel,
        XmNscrollBarDisplayPolicy, XmAS_NEEDED,
		XmNscrollingPolicy, XmAUTOMATIC,
        NULL);

	main2 = XtVaCreateManagedWidget("main2",
        xmMainWindowWidgetClass, main1,
        NULL);

    text = XmStringCreateLocalized("Menu2");
    menu2 = XmVaCreateSimpleMenuBar(main2, "menu2",
		XmVaCASCADEBUTTON, text, 'e', NULL);
    XmStringFree(text);
    XtManageChild(menu2);

	XtVaSetValues(main2, XmNmenuBar, menu2, XmNwidth, 150, XmNheight, 130,
        NULL);

    text = XmStringCreateLocalized("Menu1");
    menu1 = XmVaCreateSimpleMenuBar(main1, "menu1",
		XmVaCASCADEBUTTON, text, 'M', NULL);
    XmStringFree(text);
    XtManageChild(menu1);

#if 1
	XtVaSetValues(main1, 
		XmNmenuBar, menu1, 
		XmNworkWindow, main2, 
		NULL);
#else
	XmMainWindowSetAreas(main1, menu1, NULL, NULL, NULL, main2);
#endif

	XtRealizeWidget(toplevel);

/* Note: the following values are the result of
 * querying the current geometry.
 */
{
static XtWidgetGeometry Expected[] = {
   CWWidth | CWHeight            ,  232,  387,  131,  162, 0,0,0, /* main1 */
   CWWidth | CWHeight | CWX | CWY,    4,   35,  100,  100, 0,0,0, /* ClipWindow */
   CWWidth | CWHeight | CWX | CWY,    0,    0,  150,  130, 0,0,0, /* main2 */
   CWWidth | CWHeight | CWX | CWY,    0,    0,  150,   31, 0,0,0, /* menu2 */
   CWWidth | CWHeight | CWX | CWY,    5,    5,   46,   21, 0,0,0, /* button_0 */
   CWWidth | CWHeight | CWX | CWY,  112,   31,   19,  108, 0,0,0, /* VertScrollBar */
   CWWidth | CWHeight | CWX | CWY,    0,  143,  108,   19, 0,0,0, /* HorScrollBar */
   CWWidth | CWHeight | CWX | CWY,    0,    0,  131,   31, 0,0,0, /* menu1 */
   CWWidth | CWHeight | CWX | CWY,    5,    5,   46,   21, 0,0,0, /* button_0 */
};
/* toplevel should be replaced with to correct applicationShell */
PrintDetails(toplevel, Expected);
}
LessTifTestMainLoop(toplevel);
    return 0;
}


#if 0
troutmask:kargl[211] t -sync
Segmentation fault (core dumped)
troutmask:kargl[212] gdb t t.core
GNU gdb 4.18
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This GDB was configured as "i386-unknown-freebsd"...
Core was generated by t.
Program terminated with signal 11, Segmentation fault.
#0  0x80485f1 in set_values (old=0xbfbfd2bc, request=0xbfbfcf9c, 
    new_w=0x81e0000, args=0x81ddfa0, num_args=0xbfbfcdb0) at MainW.c:470
470             if (SW_VisualPolicy(new_w) == XmCONSTANT &&
(gdb) bt
#0  0x80485f1 in set_values (old=0xbfbfd2bc, request=0xbfbfcf9c, 
    new_w=0x81e0000, args=0x81ddfa0, num_args=0xbfbfcdb0) at MainW.c:470
#1  0x80caf1d in CallSetValues ()
#2  0x80cb303 in XtSetValues ()
#3  0x80d7d8c in XtVaSetValues ()
#4  0x804826b in main (argc=1, argv=0xbfbfd674) at t.c:39
#5  0x80480ec in _start ()
(gdb) quit

-- 
Steve
#endif