kall@mayo.EDU (Bruce Kall) (04/07/91)
I have a main window (call in MAIN_WINDOW) that fills my entire screen.
I have two other visible windows, children of MAIN_WINDOW, that do not overlap
each other (call then WINDOW_1, WINDOW_2).
I create a third window (call it ON_TOP) a child of MAIN_WINDOW and set its x,y
coordinate
so that when it is mapped, it is on top and partially obscures WINDOW_1 and
WINDOW2.
When I XDestroy ON_TOP, I'm not getting Expose/Visibility Events for WINDOW_1
and/or WINDOW_1.
NOTES:
1) All windows are created with XCreateSimpleWindow, mapped with XMapwindow
and then destroyed with XDestroyWindow.
2) MAIN_WINDOW is set as XSelectInput (the_display, MAIN_WINDOW,
SubstructureNotifyMask |
ButtonPressMask | ButtonReleaseMask | OwnerGrabButtonMask |
EnterWindowMask | LeaveWindowMask | ExposureMask);
3) All other are set as: XSelectInput (the_display, ?which_window?,
ButtonPressMask | ButtonReleaseMask | OwnerGrabButtonMask |
EnterWindowMask | LeaveWindowMask | ExposureMask | VisibilityChangeMask);
Does anybody have any suggestions as to why I'm not getting Expose Events??
\------------------------------------------------------------\
\ Bruce Kall \ Internet: Kall@Mayo.edu \
\ Mayo Clinic (Foundation) \ Phone: (507)-255-4768 \
\ Rochester, MN 55905 \ \
\------------------------------------------------------------\mouse@lightning.mcrcim.mcgill.EDU (der Mouse) (04/11/91)
> I have a main window (call in MAIN_WINDOW) that fills my entire screen. > I have two other visible windows, children of MAIN_WINDOW, that do > not overlap each other (call then WINDOW_1, WINDOW_2). > I create a third window (call it ON_TOP) a child of MAIN_WINDOW and > set its x,y coordinate so that when it is mapped, it is on top and > partially obscures WINDOW_1 and WINDOW2. > When I XDestroy ON_TOP, I'm not getting Expose/Visibility Events for > WINDOW_1 and/or WINDOW_1. (..._2. I also assume you do in fact map ON_TOP, and that the stacking order is such that it is in front of WINDOW_1 and WINDOW_2. I also assume that you do the XSelectInput calls before you destroy ON_TOP.) > 3) All other [windows: except MAIN_WINDOW] are set as: XSelectInput > (the_display, ?which_window?, ButtonPressMask | ButtonReleaseMask | > OwnerGrabButtonMask | EnterWindowMask | LeaveWindowMask | > ExposureMask | VisibilityChangeMask); > Does anybody have any suggestions as to why I'm not getting Expose > Events?? Your server could be providing a backing-store attribute of WhenMapped for you. (This doesn't explain the lack of VisibilityNotify events; I have no guesses there, except for postulating bugs.) der Mouse old: mcgill-vision!mouse new: mouse@larry.mcrcim.mcgill.edu