VideoOutputView registers for window resize notification it's in so it can update it's drawable object

desmume/src/cocoa/video_output_view.m

@@ -160,15 +160,22 @@
 
 #ifdef HAVE_OPENGL
 - (void)viewDidMoveToWindow
-{
+{//if the view moves to another window we need to update the drawable object
-	//the setView message doesnt work if the view
+
-	//isn't in a window, which is the case in the init func
+	if(!context)return;
-	//so we use this callback to bind the context to the window
+
+	//withdraw from recieving updates on previously window, if any
+	[[NSNotificationCenter defaultCenter] removeObserver:context];
 
 	if([self window] != nil)
+	{
 		[context setView:self];
-	else
+
-		[context clearDrawable];
+		//udpate drawable if the window changed
+		[[NSNotificationCenter defaultCenter] addObserver:context selector:@selector(update) name:@"NSWindowDidResizeNotification" object:[self window]];
+
+	} else [context clearDrawable];
+
 }
 #endif
 
@@ -198,8 +205,8 @@
 {
 	[super setFrame:rect];
 
-	[context update];
 	[context makeCurrentContext];
+	[context update];
 
 	//set the viewport (so the raster pos will be correct)
 	glViewport(0, 0, rect.size.width, rect.size.height);
@@ -275,6 +282,7 @@
 		[screen_buffer rotateTo0];
 }
 #endif
+
 @end
 
 #ifdef HAVE_OPENGL