@implementation customContentView

- (void)drawRect:(NSRect)dirtyRect
{
    NSRect drawRect = [self bounds];
    NSGraphicsContext *context = [NSGraphicsContext currentContext];

    //set color
    [[NSColor colorWithPatternImage:[NSImage imageNamed:@"WindowPattern.jpg"]] setFill];
    //[[NSColor blackColor] setStroke];

    //rounded rectangle
    [context saveGraphicsState];
    NSRectFill(drawRect);

    [context restoreGraphicsState];
}

- (void)setFrame:(NSRect)frameRect
{
    [super setFrame:frameRect];

    self.wantsLayer = YES;
    self.layer.masksToBounds = YES;
    self.layer.cornerRadius = RADIUS;
}


@end