Doc: updated QSyntaxHighlighter documentation and use QRegularExpression

The documentation of QSyntaxHighlighter still uses the deprecated
QRegExp class. This patch updates the code samples as well as cleanup
some typos.

Change-Id: I87b525fddb560b7c5bb38f96d9aaceadb594f76c
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/examples/widgets/richtext/syntaxhighlighter/highlighter.h b/examples/widgets/richtext/syntaxhighlighter/highlighter.h
index 39141615fc..0a24224b56 100644
--- a/examples/widgets/richtext/syntaxhighlighter/highlighter.h
+++ b/examples/widgets/richtext/syntaxhighlighter/highlighter.h
@@ -53,6 +53,7 @@
 
 #include <QSyntaxHighlighter>
 #include <QTextCharFormat>
+#include <QRegularExpression>
 
 QT_BEGIN_NAMESPACE
 class QTextDocument;
@@ -72,13 +73,13 @@ protected:
 private:
     struct HighlightingRule
     {
-        QRegExp pattern;
+        QRegularExpression pattern;
         QTextCharFormat format;
     };
     QVector<HighlightingRule> highlightingRules;
 
-    QRegExp commentStartExpression;
-    QRegExp commentEndExpression;
+    QRegularExpression commentStartExpression;
+    QRegularExpression commentEndExpression;
 
     QTextCharFormat keywordFormat;
     QTextCharFormat classFormat;