keyDown not being called

Question

I have a custom NSView called SurfaceView. It is the contentView of a NSWindow and it handles basic events like mouse click and drawing. But don't matters what I do, it does not handle the keyDown function. I've already override the acceptsFirstResponder but nothing happens. If it matters, I run the application using a custom NSEvent loop, shown below: ``` NSDictionary* info = [[NSBundle mainBundle] infoDictionary]; NSString* mainNibName = [info objectForKey:@"NSMainNibFile"]; NSApplication* app = [NSApplication sharedApplication]; NSNib* mainNib = [[NSNib alloc] initWithNibNamed:mainNibName bundle:[NSBundle mainBundle]]; [mainNib instantiateNibWithOwner:app topLevelObjects:nil]; [app finishLaunching]; while(true) { NSEvent* event = [app nextEventMatchingMask:NSAnyEventMask untilDate:[NSDate date] inMode:NSDefaultRunLoopMode dequeue:YES]; [app sendEvent:event]; // Some code is execute here every frame to do some tasks... usleep(5000); } ``` Here's the SurfaceView code: ``` @interface…

Accepted Answer

I found out what was preventing the `keyDown` event from being called. It was the `NSBorderlessWindowMask` mask, it prevents the window from become the key and main window. So I have created a subclass of `NSWindow` called `BorderlessWindow`:

```
@interface BorderlessWindow : NSWindow
{
}

@end

@implementation BorderlessWindow

- (BOOL)canBecomeKeyWindow
{
    return YES;
}

- (BOOL)canBecomeMainWindow
{
    return YES;
}

@end
```

keyDown not being called

Solution

Problem