NSKeyDownMask A mask for key-down events. Declarationstatic const NSEventMask NSKeyDownMask; See AlsoDeprecated TypesNSLeftMouseDownMaskNSLeftMouseUpMaskNSRightMouseDownMaskNSRightMouseUpMaskNSOtherMouseDownMaskNSOtherMouseUpMaskNSMouseMovedMaskNSLeftMouseDraggedMaskNSRightMouseDraggedMaskNSOtherMouseDraggedMaskNSMouseEnteredMaskNSMouseExitedMaskNSCursorUpdateMaskNSKeyUpMaskNSFlagsChangedMask