NSButton 不像 UIButton 那样可以直接设置颜色，需要自定义一个NSButton类，重写drawRect：方法
- (void)drawRect:(NSRect)dirtyRect
{
[super drawRect:dirtyRect];
//背景颜色
[[NSColor blueColor] set];
NSRectFill(self.bounds);
//绘制文字
if (titleString != nil) {
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
[paraStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]];
[paraStyle setAlignment:NSCenterTextAlignment];
//[paraStyle setLineBreakMode:NSLineBreakByTruncatingTail];
NSDictionary *attrButton = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont fontWithName:@"Verdana" size:14], NSFontAttributeName, [NSColor colorWithCalibratedRed:255 green:255 blue:255 alpha:1], NSForegroundColorAttributeName, paraStyle, NSParagraphStyleAttributeName, nil];
NSAttributedString * btnString = [[NSAttributedString alloc] initWithString:titleString attributes:attrButton];
[btnString drawInRect:NSMakeRect(0, 4, self.frame.size.width, self.frame.size.height)];
}
}
注：不绘制文字的话文字就不会显示
参考资料：http://www.cocoachina.com/bbs/read.php?tid=271752
