Doc: Make Qt Gui snippets compilable - textdocument-selections

Task-number: QTBUG-81486
Change-Id: I467ca4d5ecd33f84e44b456a9559748ffd6cc53c
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

src/gui/doc/snippets/snippets.pro

@@ -21,5 +21,7 @@ contains(QT_BUILD_PARTS, tests) {
         textdocument-listitems \
         textdocument-listitemstyles \
         textdocument-lists \
-        textdocument-printing
+        textdocument-printing \
+        textdocument-resources \
+        textdocument-selections
 }

src/gui/doc/snippets/textdocument-selections/main.cpp

@@ -47,11 +47,10 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-
-#include <QtGui>
-
 #include "mainwindow.h"
 
+#include <QApplication>
+
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);

src/gui/doc/snippets/textdocument-selections/mainwindow.cpp

@@ -47,11 +47,10 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
+#include "mainwindow.h"
 
 #include <QtWidgets>
 
-#include "mainwindow.h"
-
 MainWindow::MainWindow()
 {
     QMenu *fileMenu = new QMenu(tr("&File"));
@@ -151,7 +150,6 @@ void MainWindow::pasteSelection()
 void MainWindow::selectWord()
 {
     QTextCursor cursor = editor->textCursor();
-    QTextBlock block = cursor.block();
 
 //! [0]
     cursor.beginEditBlock();
@@ -168,7 +166,6 @@ void MainWindow::selectWord()
 void MainWindow::selectLine()
 {
     QTextCursor cursor = editor->textCursor();
-    QTextBlock block = cursor.block();
 
     cursor.beginEditBlock();
     cursor.movePosition(QTextCursor::StartOfLine);
@@ -181,7 +178,6 @@ void MainWindow::selectLine()
 void MainWindow::selectBlock()
 {
     QTextCursor cursor = editor->textCursor();
-    QTextBlock block = cursor.block();
 
     cursor.beginEditBlock();
     cursor.movePosition(QTextCursor::StartOfBlock);

src/gui/doc/snippets/textdocument-selections/mainwindow.h

@@ -77,12 +77,12 @@ public slots:
     void updateMenus();
 
 private:
-    QAction *cutAction;
-    QAction *copyAction;
-    QAction *pasteAction;
+    QAction *cutAction = nullptr;
+    QAction *copyAction = nullptr;
+    QAction *pasteAction = nullptr;
     QString currentFile;
-    QTextEdit *editor;
-    QTextDocument *document;
+    QTextEdit *editor = nullptr;
+    QTextDocument *document = nullptr;
     QTextDocumentFragment selection;
 };
 

src/gui/doc/snippets/textdocument-selections/textdocument-selections.pro

@@ -1,4 +1,10 @@
-QT          += xml
-HEADERS     = mainwindow.h
-SOURCES     = main.cpp \
-              mainwindow.cpp
+TEMPLATE = lib
+TARGET = textdocument-selections
+QT += core gui widgets
+
+HEADERS = \
+    mainwindow.h
+
+SOURCES = \
+    main.cpp \
+    mainwindow.cpp