Added new NSResponder method declarations and implemented shouldBeTreatedAsInkEvent:.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@21238 72102866-910b-0410-8b05-ffd578937521

Source/NSControl.m

@@ -687,6 +687,11 @@ static Class actionCellClass;
     [self sendAction: [self action] to: [self target]];
 }
 
+- (BOOL) shouldBeTreatedAsInkEvent: (NSEvent *)theEvent
+{
+  return NO;
+}
+
 - (void) resetCursorRects
 {
   [_cell resetCursorRect: _bounds inView: self];