Archived:Controlling Actions item in Qt context-sensitive menus

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29 Sep
2009

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Qt Quick should be used for all UI development on mobile devices. The approach described in this article (based on QWidget) is deprecated.

Article Metadata

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Tested with

Devices(s): All (S60)

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Compatibility

Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition

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Article

Keywords: QWidget::setContextMenuPolicy(), QWidget::setSoftKeys()

Created: treinio (14 Sep 2009)

Last edited: hamishwillee (11 Oct 2012)

Description

Qt allows using a context-sensitive menu to be shown in the control pane area that changes dynamically based on the focused widget. This is done by assigning softkeys (see QWidget::setSoftKeys() for a widget. By default, a menu item for Actions (see QWidget::actions()) is added in a focused widget's options menu.

This behavior can be changed by controlling context menu policy of a widget, a property that holds how the widget shows a context menu.

Source code

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{  
  textEditor = new QTextEdit(tr("Hello"), this);
 
  // Set context menu policy to 'none' to prevent Actions menu from being shown
  textEditor->setContextMenuPolicy(Qt::NoContextMenu);
 
  //  Set softkeys to text editor for a context-sensitive menu
  QAction* options = new QAction(tr("Options"), this);
  options->setSoftKeyRole(QAction::MenuSoftKey);
  QAction* exit = new QAction(tr("Exit"), this);
  exit->setSoftKeyRole(QAction::ExitSoftKey);
 
  QList<QAction*> textEditorSoftKeys;
  textEditorSoftKeys.append(options);
  textEditorSoftKeys.append(exit);
  textEditor->setSoftKeys(textEditorSoftKeys);
 
  setCentralWidget(textEditor);
 
  // Add any common menu items into menu bar
  fileMenu = menuBar()->addMenu(tr("&File"));
  exit = new QAction(tr("&Exit"), this);
  fileMenu->addAction(exit);
  connect(exit, SIGNAL(triggered()), this, SLOT(close()));
}

Postconditions

Text editor has a menu without any visible Actions items.

See also

CS001351 - Adding Options menu, panes, and icon to a Qt application