Post event to queue. It is safe to call this from non-UI threads.
If timeoutmsecs is greater than zero, the event will be delayed for at least timeoutmsecs milliseconds.
if replace is true, replace all existing events typed ET with the new one (if evt is empty, remove 'em all)
Returns true if event was queued. Always returns false if evt is null.
Post event to queue. It is safe to call this from non-UI threads. If timeoutmsecs is greater than zero, the event will be delayed for at least timeoutmsecs milliseconds. if replace is true, replace all existing events typed ET with the new one (if evt is empty, remove 'em all) Returns true if event was queued. Always returns false if evt is null.