C++ QRegExp编译时警告

我正在开发一些

Qt

app，它的主窗口由

QPlainTextEdit

子类日志窗口组成，用于输出事件。我有三种类型的消息：

信息消息，表示以

[INFO]

子字符串开头的

QString

警告消息，表示以

[Warning]

子字符串开头的

QString

错误消息，表示以

[Error]

子字符串开头的

QString

现在，我想用

QSyntaxHighlighter

类实现的是根据这些消息的类型（INFOtype-

Qt:：DarkBlue

color，WARNINGtype-

Qt:：DarkYellow

color，ERRORtype-

Qt:：DarkRed

color）更改这些消息的颜色，下面是代码块，哪些人应该完成任务：

void UeLogWindowTextHighlighter::ueSetupRules()
{
    UeHighlightRule* ueRuleInfo=new UeHighlightRule(this);
    UeHighlightRule* ueRuleWarning=new UeHighlightRule(this);
    UeHighlightRule* ueRuleError=new UeHighlightRule(this);

    this->ueInfoStartExpression()->setPattern("^[INFO].\*");        // FIRST WARNING
    this->ueWarningStartExpression()->setPattern("^[WARNING].\*");  // SECOND WARNING
    this->ueErrorStartExpression()->setPattern("^[ERROR].\*");      // THIRD WARNING

    this->ueInfoExpressionCharFormat()->setForeground(Qt::darkGray);
    this->ueWarningExpressionCharFormat()->setForeground(Qt::darkYellow);
    this->ueErrorExpressionCharFormat()->setForeground(Qt::darkRed);

    ueRuleInfo->ueSetPattern(this->ueInfoStartExpression());
    ueRuleInfo->ueSetTextCharFormat(this->ueInfoExpressionCharFormat());

    this->ueHighlightRules()->append(ueRuleInfo);

    ueRuleWarning->ueSetPattern(this->ueWarningStartExpression());
    ueRuleWarning->ueSetTextCharFormat(this->ueWarningExpressionCharFormat());

    this->ueHighlightRules()->append(ueRuleWarning);

    ueRuleError->ueSetPattern(this->ueErrorStartExpression());
    ueRuleError->ueSetTextCharFormat(this->ueErrorExpressionCharFormat());

    this->ueHighlightRules()->append(ueRuleError);
}   // ueSetupRules

但是，当我编译项目时，会收到以下警告：

../../../gui/uelogwindowtexthighlighter.cpp: In member function 'void UeLogWindowTextHighlighter::ueSetupRules()': ../../../gui/uelogwindowtexthighlighter.cpp:58:47: warning: unknown escape sequence: '\*' [enabled by default]
     this->ueInfoStartExpression()->setPattern("^[INFO].\*");
                                               ^ ../../../gui/uelogwindowtexthighlighter.cpp:59:50: warning: unknown escape sequence: '\*' [enabled by default]
     this->ueWarningStartExpression()->setPattern("^[WARNING].\*");
                                                  ^ ../../../gui/uelogwindowtexthighlighter.cpp:60:48: warning: unknown escape sequence: '\*' [enabled by default]
     this->ueErrorStartExpression()->setPattern("^[ERROR].\*");
                                                ^

因此，信息没有着色（这是我的怀疑）我的正则表达式出了什么问题？我在跟踪。

不必转义Star（

*

）。删除

\

，或者如果需要

\

，则应将其转义并写入双精度（

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）