如何设置NSSegmentedControl背景图片？

Question

我想设置NSSegmentedControl背景图像，而不是图标图像。我子类化NSSegmentedCell并重写drawSegment: inFrame: withView: function.But this works bad.How我能做到吗？

更新:我想设置半矩形的深色或浅色背景图像。

Answer 1

子类化和重写drawSegment: inFrame: withView可以很好地工作

- (void)drawSegment:(NSInteger)segment inFrame:(NSRect)frame withView:(NSView *)controlView
{
    NSImage* image = [NSImage imageNamed:NSImageNameBonjour];
    [image drawInRect:frame fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
    [super drawSegment:segment inFrame:frame withView:controlView];    
}

你还试过什么？

您是否在Interface Builder中正确设置了分段控件的单元格类？