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XMapWindow(3)                                  XLIB FUNCTIONS                                  XMapWindow(3)



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.  Map-ping Mapping
       ping 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 ances-tors ancestors
       tors 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 Substructur-eRedirectMask SubstructureRedirectMask
       eRedirectMask on the parent window, then the X server generates a MapRequest event, and the XMapWin-dow XMapWindow
       dow 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 main-tained maintained
       tained 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 inter-action interaction
       action 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



X Version 11                                    libX11 1.2.1                                   XMapWindow(3)