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QT的QSyntaxHighlighter类的使用
阅读量:258 次
发布时间:2019-03-01

本文共 406 字,大约阅读时间需要 1 分钟。

QSyntaxHighlighter类为实现QTextDocument的语法突出显示提供了强大功能。这类帮助用户在特定格式(如源代码)下的文本中突出显示部分内容,帮助识别语法错误。要实现自定义语法突出显示,需将QSyntaxHighlighter子类化并重新实现highlightBlock方法。

当创建QSyntaxHighlighter子类实例时,需将要应用语法突出显示的QTextDocument传递给实例。例如:

QTextEdit *editor = new QTextEdit;MyHighlighter *highlighter = new MyHighlighter(editor->document());

此后,系统会自动调用您的highlightBlock方法进行处理。在实现highlightBlock时,确保正确应用语法突出规则。

通过合理设计语法突出规则,您可以显著提升代码阅读体验。

转载地址:http://drnx.baihongyu.com/

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