dix: always send focus event on grab change
Focus events are useless when 'from' and 'to' are the same. But when this is the result of a (Un)GrabKeyboard request, we should always send them, including when the window manager had previously used XSetInputFocus to specify the focus on a window which happens to be now taking a grab. This is notably needed for window manager using XI to always get keyboard events even during grabs, so they can determine exactly when grabbing is active. Signed-off-by:Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by:
Peter Hutterer <peter.hutterer@who-t.net>
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mentioned in merge request !77 (merged)
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mentioned in merge request !422 (merged)
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