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       XReparentWindow - reparent windows


       int XReparentWindow(Display *display, Window w, Window parent, int x,
              int y);


       display   Specifies the connection to the X server.

       parent    Specifies the parent window.

       w         Specifies the window.

       y         Specify the x and y coordinatesof the position in the new
                 parent window.


       If the specified window is mapped, XReparentWindow automatically
       performs an UnmapWindow request on it, removes it from its current
       position in the hierarchy, and inserts it as the child of the specified
       parent.  The window is placed in the stacking order on top with respect
       to sibling windows.

       After reparenting the specified window, XReparentWindow causes the X
       server to generate a ReparentNotify event.  The override_redirect
       member returned in this event is set to the window's corresponding
       attribute.  Window manager clients usually should ignore this window if
       this member is set to True.  Finally, if the specified window was
       originally mapped, the X server automatically performs a MapWindow
       request on it.

       The X server performs normal exposure processing on formerly obscured
       windows.  The X server might not generate Expose events for regions
       from the initial UnmapWindow request that are immediately obscured by
       the final MapWindow request.  A BadMatch error results if:

       ·    The new parent window is not on the same screen as the old parent

       ·    The new parent window is the specified window or an inferior of
            the specified window.

       ·    The new parent is InputOnly, and the window is not.

       ·    The specified window has a ParentRelative background, and the new
            parent window is not the same depth as the specified window.

       XReparentWindow can generate BadMatch and BadWindow errors.


       BadWindow A value for a Window argument does not name a defined Window.


       Xlib - C Language X Interface