XMapWindow(3X11)            X Version 11(Release 5)            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


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XMapWindow(3X11)            X Version 11(Release 5)            XMapWindow(3X11)


      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

























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