MAC 开发 NSView 颜色设置

 

- (void)drawRect:(NSRect)dirtyRect {

    [super drawRect:dirtyRect];

    CALayer *layer = [CALayer layer];

    [self setWantsLayer:YES];

   [layer setBackgroundColor:[NSColor redColor].CGColor];

    [self setLayer:layer];

// 数值颜色设置

    //self.layer.backgroundColor = [NSColor colorWithRed:0.2 green:0.5 blue:0.9 alpha:1.0].CGColor;

 

    [self setNeedsDisplay:YES];

    

    

    

}