I am using an embedded version and copying what gets rendered into a
buffer which I use later. I'm currently copying the whole page at 15Hz
which is very wasteful if nothing much is changing.
The various overloaded Invalidate() methods in nsWindow tell me which
areas have changed and I'd like to propagate these values through to my
app so I only copy the areas that change.
What kind of events are you interested in? Are you using an embedded
version or the activeX component?
I would like to observe events in nsWindow.cpp from the body of my application
so that when a method
in nsWindow is called, my application can retrieve some (integer) values.
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