I've been looking at the MouseTracking sample code. It uses
TrackMouseLocation in the mouse-down handler, which is what I
thought I wanted to avoid. But TrackMouseLocation seems to allow
events to be handled, and so the draw event handler gets called,
and stuff gets drawn. I wonder if i could get key event handlers
called the same way?
TrackMouseLocation calls the runloop, and in a composited window,
invalid areas will be redrawn during a call to the runloop.
Otherwise, though, TrackMouseLocation only handles a specific set of
events. In particular, key events are dequeued and then thrown away.
You could, however, write your own version of TrackMouseLocation
easily enough; it's basically just a loop that calls ReceiveNextEvent
to get mouse and key events, and translates the event into the
appropriate MouseTracking result code. Then you could handle key
events however you wanted.
-eric
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