XMapWindow(3X11)                     BSD                      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 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