* _ContrainPoint() was broken as it could never change the point it was supposed
to contrain.
* MouseDown() no longer sends a notification message automatically (only if it
changed something)
* MouseMoved() and synchronous MouseDown() will now only send modification messages
if something actually changed (not for every mouse update).
* After key presses, the invokation message is only sent when the value changed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19697 a95241bf-73f2-0310-859d-f6bbb57e9c96
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