为什么超链接有时不会在带有NSAttributedString的NSTextField中显示？

Question

我在NSTextField中使用的文本是从文件加载的,如下所示.

NSString *path = [[NSBundle mainBundle] pathForResource:@"Credits"  ofType:@"rtf"];
NSAttributedString *as = [[NSAttributedString alloc] initWithPath:path documentAttributes:NULL];
[creditsLabel setAttributedStringValue:as];
[creditsLabel becomeFirstResponder];

除非我首先点击NSTextField上的某个地方,否则窗口中的超链接不会呈现蓝色下划线.

如何使这些超链接看起来像超链接？

这是RTF:

{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf250
{\fonttbl\f0\fnil\fcharset0 LucidaGrande;}
{\colortbl;\red255\green255\blue255;}
\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural\pardirnatural

\f0\fs24 \cf0 Copyright \'a9 2009-2010 Fully Functional Software.\
All rights reserved.\
\
BlazingStars is made possible by {\field{\*\fldinst{HYPERLINK "http://www.iterasi.net/openviewer.aspx?sqrlitid=p4mjpt7nl02tyjl08_ctaa"}}{\fldrslt DBPrefsWindowController}}, {\field{\*\fldinst{HYPERLINK "http://mattgemmell.com/source"}}{\fldrslt Image Crop}}, {\field{\*\fldinst{HYPERLINK "http://code.google.com/p/tesseract-ocr/"}}{\fldrslt Tesseract-OCR}}, {\field{\*\fldinst{HYPERLINK "http://andymatuschak.org/articles/2005/12/18/help-with-apple-help"}}{\fldrslt Andy's Help Toolkit}}, and {\field{\*\fldinst{HYPERLINK "http://wafflesoftware.net/shortcut/"}}{\fldrslt Shortcut Recorder}}.\
\
Includes icons from the BlueCons set by {\field{\*\fldinst{HYPERLINK "http://www.mouserunner.com"}}{\fldrslt Ken Saunders}}.}

alt text http://pokercopilot.com/stuff/stackoverflow/screenshot2.png

替代文字http://pokercopilot.com/stuff/stackoverflow/screenshot1.png

Answer 1

您可以通过在RTF中以这种方式设置链接来获得链接,但文本字段不会处理点击,除非您启用编辑文本属性和选择文本.(两个声明的来源:QA1487.)我在你对Diederik Hoogenboom的回答中看到你已经完成了最后一部分,所以你现在需要做的只是在整个RTF中撒上蓝色和下划线.

另一种解决方案是使用文本视图而不是文本字段.

第三种解决方案是使用DSClickableTextField.