Qaction example Sep 12, 2016 · 先贴一段描述：Qt文档原文： Detailed Description The QAction class provides an abstract user interface action that can be inserted into widgets. For example, if you have a Left Align action, a Right Align action, a Justify action, and a Center action, only one of these actions should be active at any one time. [explicit] QAction:: QAction (const QString &text, QObject *parent = nullptr) Constructs an action with some text and parent. exitAct. io/qt-5/ May 24, 2022 · addAction : To add QAction to it setEnabled : To make QActionGroup enable or disable setExclusionPolicy : To set exclusion policy to the action group checkedAction : It returns the currently checked action removeAction : To remove the specific QAction from the group actions : It returns the list of QAction group is having. Example : The QAction class provides an abstract user interface action that can be inserted into widgets. The examples work with QMainWindow, QAction, QMenu, and QApplication classes. addMenu('&File') We create the Alt + F mnemonic with the addMenu function. Whenever we add an item to the menu, Qt automatically sync with Action Editor. Each QAction has names, status messages, icons, and signals that you can connect to (and much more). Protocol NuGet can be used. fileMenu = menubar. May 24, 2022 · QDial is a class in PyQt5 which provide user to select the value within a program-definable range, and the range either wraps around (for example, with angles measured from 0 to 359 degrees). Share. qrc) . In applications ma QAction类详解： - A-祥子 - 博客园 May 31, 2017 · I am using a TrayIcon, I have added a "Exit" QAction, and now, I want to execute a certain function when clicking Exit in the TrayIcon menu. So to directly answer your question: a QAction is an abstract way of defining the various parameters and behaviour of a particular task performed by the Apr 5, 2015 · You have forgot to include the QAction header in mainwindow. cpp. For example: For example, in a word processor, if the user presses a Bold toolbar button, the Bold menu item will automatically be checked. In some situations it is useful to group QAction objects together. Oct 18, 2023 · #pragma once #include <QMainWindow> #include <QApplication> class SimpleMenu : public QMainWindow { public: SimpleMenu(QWidget *parent = nullptr); }; Note that it is up to the widget to activate the action, for example by reimplementing mouse event handlers and calling QAction::trigger(). 19. triggered that fires when that particular action has been activated. Figure: Shortcuts with QAction and . Utils. png'), '&Exit', self) The Alt + E mnemonic is created by using the & in the label of the QAction. Here is the code I have : class TrayIcon(QSystemTrayIc May 15, 2017 · QAction:: QAction (const QIcon & icon , const QString & text , QObject * parent = nullptr) 构造动作采用 icon 和一些 text and parent 。 若 parent 是动作组，动作会被自动插入组中。 Aug 24, 2023 · exitAct = QAction(QIcon('exit. Feb 8, 2012 · You can associate an index (or any other data) to each action when they are created with QAction::setData and connect the signal QMenu::triggered(QAction*) to your slot. Warning This function is not part of the public interface. For example, in a word processor, if the user presses a Bold toolbar button, the Bold menu item will automatically be checked. dll DLL needs to be imported (Skyline. Here we see how to add actions to menus, action groups, and toolbars. The goal is to make only one button being clicked. The QMenu class provides a menu widget for use in menu bars, context menus, and other popup menus while the QAction class provides an abstract user interface action that can be inserted into widgets. Improve this answer. For example, to jump to the File menu, you press the Alt-F keyboard shortcut. Creating an alarm in a QAction. Without QAction, you Oct 18, 2023 · Menus and toolbars in PyQt5 presents menus, toolbars, and a statusbar. ProtocolScripts). Also, it can be used to show the current value in a similar way of speedometer. I followed this example https://doc. So, this section is the continuation from MainWindow and Action and Resource Files (. macOS: If you add a widget to a menu in the application's menu bar on macOS, the widget will be added and it will function but with some limitations: May 22, 2020 · However, there is a limitation: the signal can only emit the data it was designed to. For example: QVariant v = qVariantFromValue((void *) yourClassObjPointer); action->setData(v); In the slot you will have to extract the pointer like: QActionGroup is a base class for classes grouping classes inhheriting QAction objects together. Mar 29, 2025 · For example, it is common to have functions that are represented in the toolbar but also the menu — think of something like Edit->Cut, which is present both in the Edit menu but also on the toolbar as a pair of scissors, and also through the keyboard shortcut Ctrl-X (Cmd-X on Mac). qt. Simple example that shows how a QAction can be used in a QMenu, QToolBar and in a keyboard shortcut. It acts as a replacement for the SLProtocolScripts DLL, and you can use it without having a local DMA installed. So for example, a QAction has a . DataMiner. May 22, 2021 · However, there is a limitation: the signal can only emit the data it was designed to. The triggered signal emits a single piece of data -- the checked state of the action after being triggered. The receiver is usually the class that you created that has all of your methods. We will use the version inherited from QWidget, addAction(QAction*) in Example 11. Alternatively, the Skyline. May 30, 2020 · For example, it is common to have functions that are represented in the toolbar but also the menu — think of something like Edit->Cut, which is present both in the Edit menu but also on the toolbar as a pair of scissors, and also through the keyboard shortcut Ctrl-X (Cmd-X on Mac). A QAction may contain an icon, descriptive text, icon text, a keyboard shortcut, status text, “What’s This?” text, and a tooltip. h Explore how to use MenuBar, QMenu, and QAction widgets in PyQt for creating robust graphical user interfaces. One simple way For sender you select what is creating the signal. The slot is the method you created in that class that you want to execute. To create an alarm from a QAction, the SLProtocolScripts. For example ActionExit might be the name you created for the exit menu item. setShortcut('Ctrl+Q') A global shortcut is created with the setShortcut function. Finally, we declare the various menus and actions as well as a simple information label in the application wide scope. Jan 10, 2023 · Menus and toolbars in PyQt6 presents menus, toolbars, and a statusbar. The signal is probably going to be clicked(). If parent is an action group the action will be automatically inserted into the group. Actions can be created as independent objects, but they may also be created during the construction of menus; the QMenu class contains convenience functions for creating actions suitable for use as menu items. Without QAction you Feb 20, 2012 · Selecting the menu item, clicking the toolbar icon or pressing the keyboard shortcut will all result in the same effect: that defined by the linking of QAction::triggered() to newFile(). Jun 4, 2020 · I'm trying to make a QActionGroup with QAction buttons in a Toolbar made within the Designer mode. Typically, you create a QAction and use the addAction() method of the QMenu object Jul 13, 2013 · Example of QAction at work: QAction *foo = new QAction(this); foo->setShortcut(Qt::Key_Q | Qt::CTRL); connect(foo, SIGNAL(triggered()), this, SLOT(close())); this->addAction(foo); Just create a new Qt GUI project (I used QtCreator) and add that code to the main window's constructor and it should work as expected. The icons used in this example are here. . Without QAction, you Apr 11, 2025 · For example, it is common to have functions that are represented in the toolbar but also the menu — think of something like Edit->Cut, which is present both in the Edit menu but also on the toolbar as a pair of scissors, and also through the keyboard shortcut Ctrl-X (Cmd-X on Mac). Alarms. #include <QAction> It should compiler your program without errors. A stripped version of text (for example, "&Menu Option" May 21, 2019 · But with QAction you can define a single QAction, defining the triggered action, and then add this action to both the menu and the toolbar. mainwindow. parent and widget are different parent does not define context Feb 21, 2015 · You can store your parameter in the action itself as a QVariant using QAction::setData() function. tis graar jkva pdw mdtrat mrd iuwlh dwdkij owkss gbgz vvj rjxt ysw xvawct hrr