Improved the documentation of saving and restoring window geometry.

Mentioned in the doc that the preferred way to save/restore a geometry
of a QMainWindow is to use both saveGeometry() and saveState().

Reviewed-by: Kavindra Devi Palaraja

1 files changed, 19 insertions, 0 deletions

diff --git a/doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp b/doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp
new file mode 100644
index 0000000..0e4040a
--- /dev/null
+++ b/doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp
@@ -0,0 +1,19 @@
+//! [0]
+void MyMainWindow::closeEvent(QCloseEvent *event)
+{
+    QSettings settings("MyCompany", "MyApp");
+    settings.setValue("geometry", saveGeometry());
+    settings.setValue("windowState", saveState());
+    QMainWindow::closeEvent(event);
+}
+//! [0]
+
+
+//! [1]
+void MainWindow::readSettings()
+{
+    QSettings settings("MyCompany", "MyApp");
+    restoreGeometry(settings.value("myWidget/geometry").toByteArray());
+    restoreState(settings.value("myWidget/windowState").toByteArray());
+}
+//! [1]