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
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XMapWindow(3X11) X Version 11 (Release 5) XMapWindow(3X11)
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(3X11), XConfigureWindow(3X11),
XCreateWindow(3X11), XDestroyWindow(3X11),
XRaiseWindow(3X11), XUnmapWindow(3X11)
Xlib - C Language X Interface
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