XMapWindow man page on QNX

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XMapWindow(3)			XLIB FUNCTIONS			 XMapWindow(3)

       XMapWindow, XMapRaised, XMapSubwindows - map windows

       int XMapWindow(Display *display, Window w);

       int XMapRaised(Display *display, Window w);

       int XMapSubwindows(Display *display, Window w);

       display	 Specifies the connection to the X server.

       w	 Specifies the window.

       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 process‐
       ing 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 man‐

       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.

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

       XChangeWindowAttributes(3), XConfigureWindow(3), XCreateWindow(3), XDe‐
       stroyWindow(3), XRaiseWindow(3), XUnmapWindow(3)
       Xlib - C Language X Interface

X Version 11			 libX11 1.3.5			 XMapWindow(3)
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