NSWindow with round corners and shadow

Question

I\'m trying to crate a NSWindow without title bar (NSBorderlessWindowMask) with round corners and a shadow, similar to the below \"Welcome

Answer 1

try this:

- (id)initWithContentRect:(NSRect)contentRect
                styleMask:(NSUInteger)windowStyle   
                  backing:(NSBackingStoreType)bufferingType
                    defer:(BOOL)deferCreation
{
    self = [super
            initWithContentRect:contentRect
            styleMask:NSBorderlessWindowMask | NSResizableWindowMask
            backing:bufferingType
            defer:deferCreation];
    if (self)
    {
        [self setOpaque:NO];
       [self setBackgroundColor:[NSColor clearColor]];            

    }

      [self setHasShadow:YES];


    [self setMovableByWindowBackground:YES];
    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(didBecomeKey:) name:NSWindowDidBecomeKeyNotification object:self];

    return self;
}

-(void)didBecomeKey:(NSNotification *)notify{
    [self performSelector:@selector(invalidateShadow) withObject:nil afterDelay:.1];
}