1 files changed, 74 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/src_gui_text_qsyntaxhighlighter.cpp b/doc/codesnippets/doc/src/snippets/code/src_gui_text_qsyntaxhighlighter.cpp
new file mode 100644
index 000000000..bb00cac38
--- /dev/null
+++ b/doc/codesnippets/doc/src/snippets/code/src_gui_text_qsyntaxhighlighter.cpp
@@ -0,0 +1,74 @@
+//! [0]
+editor = QTextEdit()
+highlighter = MyHighlighter(editor.document())
+//! [0]
+
+
+//! [1]
+class MyHighlighter(QSyntaxHighlighter):
+    def highlightBlock(self, text):
+        myClassFormat = QTextCharFormat()
+        myClassFormat.setFontWeight(QFont.Bold)
+        myClassFormat.setForeground(Qt.darkMagenta)
+        pattern = QString("\\bMy[A-Za-z]+\\b")
+
+        expression = QRegExp(pattern)
+        index = text.indexOf(expression)
+        while index >= 0:
+            length = expression.matchedLength()
+            setFormat(index, length, myClassFormat)
+            index = text.indexOf(expression, index + length)
+//! [1]
+
+
+//! [2]
+multiLineCommentFormat = QTextCharFormat()
+multiLineCommentFormat.setForeground(Qt.red)
+
+startExpression = QRegExp("/\\*")
+endExpression = QRegExp("\\*/")
+
+setCurrentBlockState(0)
+
+startIndex = 0
+if previousBlockState() != 1:
+    startIndex = text.indexOf(startExpression)
+
+while startIndex >= 0:
+    endIndex = text.indexOf(endExpression, startIndex)
+    if endIndex == -1:
+       setCurrentBlockState(1)
+       commentLength = text.length() - startIndex
+    else:
+       commentLength = endIndex - startIndex
+                       + endExpression.matchedLength()
+
+    setFormat(startIndex, commentLength, multiLineCommentFormat)
+    startIndex = text.indexOf(startExpression,
+                              startIndex + commentLength)
+//! [2]
+
+
+//! [3]
+class MyHighlighter(QSyntaxHighlighter):
+    def highlightBlock(self, text):
+        myClassFormat = QTextCharFormat()
+        myClassFormat.setFontWeight(QFont.Bold)
+        myClassFormat.setForeground(Qt.darkMagenta)
+        pattern = QString("\\bMy[A-Za-z]+\\b")
+
+        expression = QRegExp(pattern)
+        index = text.indexOf(expression)
+        while index >= 0:
+            length = expression.matchedLength()
+            setFormat(index, length, myClassFormat)
+            index = text.indexOf(expression, index + length)
+//! [3]
+
+
+//! [4]
+class BlockData(QTextBlockUserData):
+    def __init__(self):
+        # ...
+        self.parentheses = []
+//! [4]