How to disable and enable the menus in menu bar?

[Guest]

@nathan:
how to disable and enable the menus in menu bar..
thanks for your good response..?

[andreyc EDIT: I moved this question from old thread (2011)]

[andreyc]

imyournathan if you have a question please start new thread next time.

[andreyc]

@
QMenuBar *menuBar;
QMenu *menuFile;
QAction *actionOpen;
QAction *actionClose;

menuBar = new QMenuBar(MainWindow);

menuFile = new QMenu(menuBar);
menuFile->setTitle("File");

actionOpen = new QAction(MainWindow);
actionOpen->setText("Open");

actionClose = new QAction(MainWindow);
actionClose->setText("Close");

menuBar->addAction(menuFile->menuAction());
menuFile->addAction(actionOpen);
menuFile->addAction(actionClose);
@

To disable one of the items or whole "File" menu
@
actionOpen->setEnable(false);
menuFile->setEnable(false);
@

To enable them back
@
actionOpen->setEnable(true);
menuFile->setEnable(true);
@

[sami1592]

@andreyc

Approaching like this would disables the QMenu, and it's children are no longer visible. Is there is a way in which the user can see that ta QMenu is disable but still can see it's children?

menuFile->setEnable(false);

[Bagavathi]

@sami1592

In the same way, You can disable all the sub menus and enable the main menu.