mono/xwt — pull request #365 by sevoku (2014-07-22 07:59:50+00:00)
Title: Fix mac toggle button

This PR fixes the ToggleButton backend on MAC:
* add missing OnToggled event
* use NSButtonType.PushOnPushOff as described in https://developer.apple.com/library/mac/Documentation/Cocoa/Conceptual/Button/Tasks/SettingButtonType.html#//apple_ref/doc/uid/20000085-79904