XMapWindow(3X11)    X Version 11 (Release 4)     XMapWindow(3X11)



  NAME
       XMapWindow, XMapRaised, XMapSubwindows - map windows

  SYNTAX
       XMapWindow(display, w)
             Display *display;
             Window w;

       XMapRaised(display, w)
             Display *display;
             Window w;

       XMapSubwindows(display, w)
             Display *display;
             Window w;

  ARGUMENTS
       display   Specifies the connection to the X server.

       w         Specifies the window.

  DESCRIPTION
       The XMapWindow function maps the window and all of its
       subwindows that have had map requests.  Mapping a window
       that has an unmapped ancestor does not display the window
       but marks it as eligible for display when the ancestor
       becomes mapped.  Such a window is called unviewable.  When
       all its ancestors are mapped, the window becomes viewable
       and will be visible on the screen if it is not obscured by
       another window.  This function has no effect if the window
       is already mapped.

       If the override-redirect of the window is False and if some
       other client has selected SubstructureRedirectMask on the
       parent window, then the X server generates a MapRequest
       event, and the XMapWindow function does not map the window.
       Otherwise, the window is mapped, and the X server generates
       a MapNotify event.




  Page 1                                          (printed 8/30/91)

  XMapWindow(3X11)    X Version 11 (Release 4)     XMapWindow(3X11)



       If the window becomes viewable and no earlier contents for
       it are remembered, the X server tiles the window with its
       background.  If the window's background is undefined, the
       existing screen contents are not altered, and the X server
       generates zero or more Expose events.  If backing-store was
       maintained while the window was unmapped, no Expose events
       are generated.  If backing-store will now be maintained, a
       full-window exposure is always generated.  Otherwise, only
       visible regions may be reported.  Similar tiling and
       exposure take place for any newly viewable inferiors.

       If the window is an InputOutput window, XMapWindow generates
       Expose events on each InputOutput window that it causes to
       be displayed.  If the client maps and paints the window and
       if the client begins processing events, the window is
       painted twice.  To avoid this, first ask for Expose events
       and then map the window, so the client processes input
       events as usual.  The event list will include Expose for
       each window that has appeared on the screen. The client's
       normal response to an Expose event should be to repaint the
       window.  This method usually leads to simpler programs and
       to proper interaction with window managers.

       XMapWindow can generate a BadWindow error.

       The XMapRaised function essentially is similar to XMapWindow
       in that it maps the window and all of its subwindows that
       have had map requests.  However, it also raises the
       specified window to the top of the stack.

       XMapRaised can generate a BadWindow error.

       The XMapSubwindows function maps all subwindows for a
       specified window in top-to-bottom stacking order.  The X
       server generates Expose events on each newly displayed
       window.  This may be much more efficient than mapping many
       windows one at a time because the server needs to perform
       much of the work only once, for all of the windows, rather
       than for each window.



  Page 2                                          (printed 8/30/91)

  XMapWindow(3X11)    X Version 11 (Release 4)     XMapWindow(3X11)



       XMapSubwindows can generate a BadWindow error.

  DIAGNOSTICS
       BadWindow A value for a Window argument does not name a
                 defined Window.

  SEE ALSO
       XChangeWindowAttributes(3X11), XConfigureWindow(3X11),
       XCreateWindow(3X11), XDestroyWindow(3X11),
       XRaiseWindow(3X11), XUnmapWindow(3X11)
       Xlib - C Language X Interface































  Page 3                                          (printed 8/30/91)