gdkWindowInvalidateMaybeRecurse: gdkWindowInvalidateMaybeRecurse
Description
Adds region
to the update area for window
. The update area is the
region that needs to be redrawn, or "dirty region." The call
gdkWindowProcessUpdates
sends one or more expose events to the
window, which together cover the entire update area. An
application would normally redraw the contents of window
in
response to those expose events.Usage
gdkWindowInvalidateMaybeRecurse(object, region, child.func, user.data)
Arguments
user.data
data passed to child.func
Details
GDK will call gdkWindowProcessAllUpdates
on your behalf
whenever your program returns to the main loop and becomes idle, so
normally there's no need to do that manually, you just need to
invalidate regions that you know should be redrawn.
The child.func
parameter controls whether the region of
each child window that intersects region
will also be invalidated.
Only children for which child.func
returns TRUE will have the area
invalidated.