SERRER@nrcm3.nrc.ca (Martin Serrer) (10/25/90)
Hello IRIS Xperts,
I am using the HP widget set on an IRIS 4D IRIX version 3.2.1 and trying to se
t up
an event handler for client message events.
If I register the event handler for a push button widget things seem to work,
but
if I register it for a container widget such as XwrowCol or XwbulletinBoard
the event routine 'user_handler' is never called.
By monitoring the event loop I can see that the ClientMessage is received in b
oth
cases. Am I missing something??
----------------------register event handler code fragment------------------
panel_widget = XtCreateManagedWidget("panel",
XwrowColWidgetClass, toplevel, NULL, 0);
XtSetArg(wargs[0], XtNlabel, "Fire");
fire_button = XtCreateManagedWidget("fire",
XwpushButtonWidgetClass, panel_widget, wargs, 1);
/******* this one works ******/
XtAddEventHandler(fire_button, NoEventMask, True,
user_handler, NULL);
/******* this doesn't work *******/
/* XtAddEventHandler(panel_widget, NoEventMask, True,
user_handler, NULL);
*/ while(TRUE)
{
XEvent event;
XtNextEvent(&event);
if(event.type == ClientMessage)
{ printf("Client Message event received\n"); }
XtDispatchEvent(&event);
}
--------------- XSendEvent code fragment----------------------
target_display = XtDisplay(a_widget);
target_window = XtWindow(a_widget);
/* Build the Client message event data structure */
user_event.display = target_display;
user_event.window = target_window;
user_event.type = ClientMessage;
user_event.format = 32;
user_event.message_type = USER_MESSAGE_TYPE;
XSendEvent(target_display, target_window, TRUE,
XtAllEvents, &user_event);
-------------------------------------------------------------------------
Thanks in advance for any help.
+-----------------------------------------------------------------------------+
| Martin Serrer Systems Lab., Bldg. M2, Montreal Rd.|
| 613-993-9442 National Research Council of Canada,|
| serrer@syslab.nrc.ca Ottawa, Ontario, Canada K1A-0R6 |
+------------------- Software Rusts, Rust never Sleeps -----------------------+