1 files changed, 127 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/src_gui_kernel_qapplication.cpp b/doc/codesnippets/doc/src/snippets/code/src_gui_kernel_qapplication.cpp
new file mode 100644
index 000000000..21cfdea77
--- /dev/null
+++ b/doc/codesnippets/doc/src/snippets/code/src_gui_kernel_qapplication.cpp
@@ -0,0 +1,127 @@
+//! [0]
+def main():
+    if Qt.Q_WS_X11
+        useGUI = getenv("DISPLAY") != 0
+    else:
+        useGUI = True
+
+    app = QApplication(sys.argv, useGUI)
+
+    if useGUI:
+       # start GUI version
+       ...
+    else:
+       # start non-GUI version
+       ...
+    return app.exec_()
+//! [0]
+
+
+//! [1]
+QApplication.setStyle(QWindowsStyle())
+//! [1]
+
+
+//! [2]
+def main():
+    QApplication.setColorSpec(QApplication.ManyColor)
+    QApplication app(sys.argv)
+    ...
+    return app.exec_()
+
+//! [2]
+
+
+//! [3]
+class MyWidget (QWidget):
+    # ...
+    def sizeHint(self):
+        return QSize(80, 25).expandedTo(QApplication.globalStrut())
+//! [3]
+
+
+//! [4]
+def showAllHiddenTopLevelWidgets():
+    for widget in QApplication.topLevelWidgets():
+        if widget.isHidden():
+            widget.show()
+//! [4]
+
+
+//! [5]
+def updateAllWidgets():
+    for widget in QApplication.allWidgets()
+        widget.update()
+//! [5]
+
+
+//! [6]
+if __name__ == '__main__':
+    QApplication.setDesktopSettingsAware(False)
+    app = QApplication(sys.argv)
+    # ...
+    return app.exec_()
+//! [6]
+
+
+//! [7]
+if (startPos - currentPos).manhattanLength() >= QApplication.startDragDistance():
+    startTheDrag()
+//! [7]
+
+
+//! [8]
+class MyApplication (QApplication):
+# ...
+    def commitData(QSessionManager& manager)
+        if manager.allowsInteraction():
+            ret = QMessageBox.warning(
+                    mainWindow,
+                    QObject.tr("My Application"),
+                    QObject.tr("Save changes to document?"),
+                    QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel)
+
+            if ret == QMessageBox.Save:
+                manager.release()
+                if not saveDocument():
+                    manager.cancel()
+            elif ret == QMessageBox.Discard:
+                pass
+            else:
+                manager.cancel()
+        else:
+            # we did not get permission to interact, then
+            # do something reasonable instead
+            pass
+//! [8]
+
+
+//! [9]
+appname -session id
+//! [9]
+
+
+//! [10]
+for command in mySession.restartCommand():
+    do_something(command)
+//! [10]
+
+
+//! [11]
+for command in mySession.discardCommand():
+    do_something(command)
+//! [11]
+
+
+//! [12]
+widget = qApp.widgetAt(x, y)
+if widget:
+    widget = widget.window()
+//! [12]
+
+
+//! [13]
+widget = qApp.widgetAt(point)
+if widget:
+    widget = widget.window()
+//! [13]