mac 下绘制虚线的方法

    NSBezierPath *path = [[NSBezierPathalloc] init];

    

//   绘制竖线

    CGFloat dash[] = {1.0, 1.0};

    [pathsetLineDash:dash count:2phase:0.0];

    [pathmoveToPoint:NSMakePoint(drawAreaX+ (i * pos), drawAreaY)];

    [path lineToPoint:NSMakePoint(drawAreaX + (i * pos), drawAreaY + drawAreaHeight)];