What is QAction in Qt?

What is QAction in Qt?

The QAction class provides an abstract user interface action that can be inserted into widgets.

How do I add menu bar to QT?

You add menu items with addMenu(). For example, asuming that menubar is a pointer to a QMenuBar and fileMenu is a pointer to a QMenu, the following statement inserts the menu into the menu bar: menubar->addMenu(fileMenu);

How do I create an action in Qt?

To add an action to a menu or a toolbar, simply press the left mouse button over the action in the action editor, and drag it to where it is required. Qt Designer provides highlighted guide lines that tell you where the action will be added. Release the mouse button to add the action when you have found the right spot.

What is context menu in Qt?

Context menus are usually invoked by some special keyboard key or by right-clicking. A menu consists of a list of action items. In applications, many common commands can be invoked via menus, toolbar buttons as well as keyboard shortcuts.

What is QToolTip?

The QToolTip class provides tool tips (balloon help) for any widget.

How do I add a toolbar to Qwidget?

That’s why, you can add a QToolBar to any other widget by calling addWidget for layout or by setting the QToolBar parent to your widget. As you can see in documentation of QToolBar setAllowedAreas method: This property holds areas where the toolbar may be placed. The default is Qt::AllToolBarAreas.

How do I create a popup window in Qt?

2 Answers

1. Include your pop-up class in your MainWindow.h :
2. Define a pointer to your pop-up class in the MainWindow.h :
3. Create an object in the MainWindow.cpp file:
4. Define a slot in MainWindow.h and call it, for example, showPopUp() :

How do I add submenu to QT?

QMenu::addMenu() returns a pointer to the created submenu. You can use these pointers to add actions for the submenus. You can then connect slots to the triggered() signal of the returned actions (e.g. actionA_Setup ).

How do I add tooltip to QT?

The simplest and most common way to set a widget’s tool tip is by calling its QWidget::setToolTip() function (static tool tips). Then the tool tip is shown whenever the cursor points at the widget.