Sure, here is the code snippet to handle menu item click in Qt:
First, in your MainWindow class, define a private slot function to handle the menu item click event. For example:
private slots:
void handleMenuClicked();
Then, in the constructor or initialization method, connect the “triggered” signal of the menu item with the above slot function. For example:
QMenuBar *menuBar = new QMenuBar(this);
QMenu *fileMenu = menuBar->addMenu("File");
QAction *openAction = fileMenu->addAction("Open");
connect(openAction, &QAction::triggered, this, &MainWindow::handleMenuClicked);
// Add more menu items and connect their corresponding signals and slots
layout()->setMenuBar(menuBar);
In the above code, we created a menu item named “Open” and connected it with the handleMenuClicked() slot function.
Finally, implement the slot function handleMenuClicked() to respond to the menu item click event. For example:
void MainWindow::handleMenuClicked()
{
// Write your logic to handle the click event here
}
When a user clicks on the corresponding menu item in the menubar, it will trigger its associated signal and execute the connected slot function. You can add your desired operations inside handleMenuClicked() function.
Note: If you need to pass additional parameters to the slot function, you can use Qt’s QSignalMapper class or utilize lambda expressions with C++11. Refer to Qt’s official documentation for more details.
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