XMapWindow(3X11)              X11 SDE 5.4R3.00              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.

       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



Licensed material--property of copyright holder(s)                         1

XMapWindow(3X11)              X11 SDE 5.4R3.00              XMapWindow(3X11)


       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.

       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


























Licensed material--property of copyright holder(s)                         2