Callback question ( Newbie - ish )

[Smith, Jack]

O.K.
 I've managed to write a simple X app that creates a window with a menu,
with sub-menu's

I have even managed to register callbacks for a submenu item's Arm, Disarm,
Activate messages.
I see the printf(); messages for these events.

I also tried to register for Create and Destroy, but they don't seem to get
called. (I get no corresponding printf() messages)

Below are the relevant code snippets

Any explanations ??

/*newItem is the file..new menu item */
newItem = XmCreatePushButton ( fileMenu, "newItem", al, ac );

/* here I register the callbacks for newItem*/
XtAddCallback( newItem, XmNactivateCallback, OnFileNew, 0 );
XtAddCallback( newItem, XmNarmCallback, OnFileNew_Arm, 1 );
XtAddCallback( newItem, XmNdisarmCallback, OnFileNew_DisArm, 2);

XtAddCallback( newItem, XmNcreatePopupChildProc, OnFileNew_Create, 3 ); /*I
presume this is the create Callback ?!?!?! */

XtAddCallback( newItem, XmNdestroyCallback, OnFileNew_Destroy, 4 );

/*here are the various callback handlers*/

void OnFileNew_Arm(Widget w, XtPointer client_data, XtPointer xt_call_data)
{
        XmPushButtonCallbackStruct *call_data = (XmPushButtonCallbackStruct
*) xt_call_data ;
         printf("OnFileNew_Arm\n");
}
 
void OnFileNew_DisArm(Widget w, XtPointer client_data, XtPointer
xt_call_data)
{
        XmPushButtonCallbackStruct *call_data = (XmPushButtonCallbackStruct
*) xt_call_data ;
        printf(" OnFileNew_DisArm\n");
}
 

void OnFileNew_Create(Widget w, XtPointer client_data, XtPointer
xt_call_data)
{
        XmAnyCallbackStruct *call_data = (XmAnyCallbackStruct *)
xt_call_data ;
            printf("OnFileNew_Create\n");

}
void OnFileNew_Destroy(Widget w, XtPointer client_data, XtPointer call_data)
{
        printf(" OnFileNew_Destroy\n");
}

void OnFileNew(Widget w, XtPointer client_data, XtPointer xt_call_data)
{
        XmPushButtonCallbackStruct *call_data = (XmPushButtonCallbackStruct
*) xt_call_data ;
        printf("OnFileNew\n");
}

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