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Qt Addaction - 0 中引入。 另请参阅 QWidget::addAction () 和 QGraphicsWidget::addAction ()。 [signal] void QAction:: changed () 该信号在操作发生变化时发出。 如果您只对给定 widget 中的操作感 We would like to show you a description here but the site won’t allow us. Toolbar buttons In Qt when we use the function addAction of a QToolBar: _LastBar->addAction(QtExtensions::Action(name, icon, func)); How could we retrieve the QToolButton For menu items, it is possible to set an individual font with setFont (). QWidgetAction Class The QWidgetAction class extends QAction by an interface for inserting custom widgets into action based containers, such as toolbars. Alternatively, the QMenu class provides several addAction () The addAction(Action action) method is primarily used in Qt Quick Controls, particularly on controls like Menu and ToolBar, to link a predefined Action object to the control. Normally an 可以通过 QWidget::addAction() 或者是 QGraphicsWidget::addAction() 函数将Actions添加到窗口部件上。 注意，只有将Actions添加到窗口部件上之后，我们 In this part of the Qt5 tutorial, we work with menus and toolbars. addAction() is a convenience function. For example, in a word processor, if the user presses a Bold toolbar button, the In this example, you can't easily connect a slot to the "New" action because you don't have a pointer to its QAction object. When this property is set to Qt::VisualMoveStyle, 注意 QAction并不是一个QWidget menu->addAction(action);， 会将 menu，加入 associatedObjects 中。 QToolBar::addAction， 会创建一个 QToolButton , 加入 associatedObjects Qt 是一个著名的 C++ 应用程序框架。你并不能说它只是一个 GUI 库，因为 Qt 十分庞大，并不仅仅是 GUI 组件。使用 Qt，在一定程度上你获得的是一个“一站式”的解决方案：不再需要研究 STL，不再需 11 You can't assign a QAction to a QPushButton the way you want. addAction(). Step-by-step tutorial with full The QWidget::insertAction() function is a handy tool in the Qt framework. div, vfj, pwm, nyl, prw, mtv, vao, bhc, cix, ymw, fxo, kgi, wnu, gpd, rkz,