Added some window status fixes for OSX.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1602 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/MacOSX/AppDelegate.mm

@@ -43,6 +43,11 @@
 	_quit = TRUE;
 }
 
+- (void)windowWillClose:(id)sender
+{
+	_quit = TRUE;
+}
+
 - (void)windowDidResize:(NSNotification *)aNotification
 {
 	NSWindow	*window;

source/Irrlicht/MacOSX/CIrrDeviceMacOSX.mm

@@ -485,14 +485,16 @@ bool CIrrDeviceMacOSX::isWindowActive() const
 
 bool CIrrDeviceMacOSX::isWindowFocused() const
 {
-	// TODO: return proper value
-	return true;
+	if (_window != NULL)
+		return [(NSWindow *)_window isKeyWindow];
+	return false;
 }
 
 
 bool CIrrDeviceMacOSX::isWindowMinimized() const
 {
-	// TODO: return proper value
+	if (_window != NULL)
+		return [(NSWindow *)_window isMiniaturized];
 	return false;
 }