NAME

       XMapWindow, XMapRaised, XMapSubwindows - map windows

SYNTAX

       int XMapWindow(Display *display, Window w);

       int XMapRaised(Display *display, Window w);

       int XMapSubwindows(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(3), XConfigureWindow(3), XCreateWindow(3), XDestroyWindow(3), XRaiseWindow(3),
       XUnmapWindow(3)
       Xlib - C Language X Interface