问题
如何改变NSTextField文字带下划线？
如何改变NSTextField文字颜色为蓝色？
如何只改变NSTextField部分文字为蓝色且带下划线？
最终效果
image.png
解决方案
//标签文字都是蓝色且带下划线
NSMutableAttributedString *linkAttrStr = [[NSMutableAttributedString alloc] initWithString:_label1.stringValue];
[linkAttrStr addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, linkAttrStr.length)];
[linkAttrStr addAttribute:NSForegroundColorAttributeName value:[NSColor linkColor] range:NSMakeRange(0, linkAttrStr.length)];
[_label1 setAttributedStringValue:linkAttrStr];
//只有"click here"文字是蓝色且带下划线
NSRange range = [_label2.stringValue rangeOfString:@"click here"];
linkAttrStr = [[NSMutableAttributedString alloc] initWithString:_label2.stringValue];
[linkAttrStr addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:range];
[linkAttrStr addAttribute:NSForegroundColorAttributeName value:[NSColor linkColor] range:range];
[_label2 setAttributedStringValue:linkAttrStr];
