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. 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 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(3), XConfigureWindow(3), XCreateWindow(3),
XDestroyWindow(3), XRaiseWindow(3), XUnmapWindow(3)
Xlib - C Language X Interface

X Version 11 libX11 1.8.10 XMapWindow(3)