xrefresh - refresh all or part of an X screen
Use a white background. The screen just appears to flash
quickly, and then repaint. Use a black background (in
effect, turning off all of the electron guns to the tube).
This can be somewhat disorienting as everything goes black
for a moment. Use a solid background of the specified
color. Try green. Use the root window background. This
is the default. All of the windows simply repaint. Specifies
the portion of the screen to be repainted; see
X(1X). This argument allows you to specify the server and
screen to refresh; see X(1X).
xrefresh is a simple X program that causes all or part of
your screen to be repainted. This is useful when system
messages have messed up your screen. xrefresh maps a window
on top of the desired area of the screen and then
immediately unmaps it, causing refresh events to be sent
to all applications. By default, a window with no background
is used, causing all applications to repaint
"smoothly." However, the various options can be used to
indicate that a solid background (of any color) or the
root window background should be used instead.
The xrefresh program uses the routine XGetDefault(3X11) to
read defaults, so its resource names are all capitalized.
Determines what sort of window background to use. Determines
the area to refresh. Not very useful.
To get default host and display number.
It should have just one default type for the background.
Jim Gettys, Digital Equipment Corp., MIT Project Athena
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