Qt shortcut event


Qt shortcut event. seems the best option so far. The following is a part of a code that I use to capture User Defined Shortcuts. A shortcut’s key sequence can be set with setKey() and retrieved with key() . This allows clients (e. Nov 20, 2011 · For Example, I have a button having text on it "change". Warning. For instance, if Physical Key 1 is pressed, do action A. A shortcut can be enabled or disabled with setEnabled() , and can have “What’s This?” help text set with setWhatsThis() . When the QSpinBox has keyboard focus, then the QShortcut object's parent is no longer receiving events. QGestureEvent. Focus events occur due to mouse actions, key presses (such as Tab or Backtab ), the window system, popup menus, keyboard shortcuts, or other application-specific reasons. ) A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. Qt provides three types of slider-like widgets: QSlider, QScrollBar and QDial. I can also use The QEvent class is the base class of all event classes. This function is not part of the public interface. Feb 23, 2016 · To summarize: The Qt Event System may be an option (with some help on system/desktop manager level) Qxt Library (not longer maintained) Or this project UGlobalHotkey. May 24, 2021 at 1:18. Each key code consists of a single Qt::Key value and zero or more modifiers, such as Qt::ShiftModifier, Qt::ControlModifier, Qt Constructs a shortcut event for the given key press, associated with the QShortcut ID id. Context menus are usually invoked by some special From Qt offical document: When the user types the key sequence for a given shortcut, the shortcut’s activated () signal is emitted. Ctrl + Shift + F. @Korchkidu For me it works with both. The reason for a particular focus event is returned by reason () in the Jun 16, 2018 · Shortcuts default to Qt::WindowShortcut, meaning they can be activated anywhere in the window. If priority is Keys. QFileOpenEvent. The So, we will start by creating a function that can be called when the event is triggered. The Menus example demonstrates how menus can be used in a main window application. If Physical Key 1 is held for 2 seconds, do action B. Returns true if the key sequence that triggered the event is ambiguous. Sep 30, 2021 · The goal is to show both options at the same time to the user. I don't think that's possible (by now). Return type: PySide2. A menu widget is a selection menu. Show/hide bounding boxes. The delete key press should have different behavior if a particular widget has focus. QtWidgets. Typical buttons are OK, Apply, Cancel, Close, Yes, No and Help. Some of the shortcuts are to be activated when a key is held. While surfing the net, I was only able to find the function : void MainWindow::keyPressEvent(QKeyEvent *event) { What you might find very useful is the function QKeySequence(). PySide6. parent and widget are different parent does not define context. Adds a tab with the given page, icon, and label to the tab widget, and returns the index of the tab in the tab bar. Show slide palette. This will add the shortcut to the QAction (create triggered events) and set it as This function was introduced in Qt 6. This function was introduced in Qt 4. But it is quite easy to implement by overriding the mouse event handlers or using event filters. Aug 24, 2023 · QShortcut. Pull-down menus are shown by the menu bar when the user clicks on the respective item or presses the specified shortcut key. See also QShortcut. A shortcut key can be specified by preceding the preferred character with an ampersand in the A menu widget is a selection menu. isAmbiguous # Return type: bool. Warning You should not normally need to use this function since Qt’s shortcut system removes shortcuts automatically when their parent widget is destroyed. No effect. Note that if the event is a multiple-key compressed event that is partly due to auto-repeat, this function could return either true or false indeterminately. To facilitate the construction of reusable components and to address some of the cases unique to fluid user interfaces, the Qt Quick items add a scope based extension to Qt's traditional keyboard focus model. QApplication. They all inherit most of their functionality from QAbstractSlider, and can in theory replace each other in an application since the differences only . In general, events come from the underlying window system Sets shortcuts as the list of shortcuts that trigger the action. Show scene camera palette. It is connected to the method void MyPage::on_startButton_clicked(). Aug 12, 2023 · So, in your case just switch this line. By default, events are dispatched to event handlers like QObject::timerEvent () and QWidget::mouseMoveEvent (). void QAction:: setShortcuts (QKeySequence::StandardKey key) Sets a platform dependent list of shortcuts based on the key. The keyboard caused this event to be sent. Valid values for this property can be found in Qt::ShortcutContext. In applications many common commands can be invoked via menus, toolbar buttons, and keyboard shortcuts. Learn more void QTest:: keyPress ( QWindow * window, Qt::Key key, Qt::KeyboardModifiers modifier = Qt::NoModifier, int delay = -1) This is an overloaded function. The usual way to set up keyboard shortcuts is with a QAction in a menu; or if there are no menus, with a bare QShortcut. Otherwise, it triggers the shortcut action, if one exists. If the key sequence has multiple key codes, each is separated by commas in the string returned, such as "Alt+X, Ctrl+Y, Z". Show timeline palette. The key sequences themselves (e. Context menus are usually invoked by some special keyboard Focus events are sent to widgets when the keyboard input focus changes. The QHotkey is a class that can be used to create hotkeys/global shortcuts, aka shortcuts that work everywhere, independent of the application state. For example: QPushButton *button = new QPushButton("&Download", this); In this example the shortcut is Alt+D. I tried all the possible combinations of the 4 possible values for the 2 shortcut contexts. The first element of the list is the primary shortcut. A menu widget can be either a pull-down menu in a menu bar or a standalone context menu. The overloaded keyPressEvent isn't called for that derived widget because it is getting channeled to a shortcut action. Shortcut { sequence:"Ctrl+E,Ctrl+W" onActivated:edit Tab or Shift+Tab. 2. We provide a list of common Returns the list of shortcuts, with the primary shortcut as the first element of the list. Apr 27, 2017 · However, sometimes there is a need to override a shortcut, like you do. // Qt6 flavor. Even the mouse stuff doesn't work as expected: Somehow events seem to get lost. Aug 6, 2016 · qDebug() << "Action triggered!"; } Now if you click the action menu entry with left mouse button, it will print. In the right side at the Property Editor scroll down to the blue part titled QPushButton. This is done with the following line: b1. Event objects contain event parameters. Apr 12, 2019 · What Are Events. Normally you do not need to use this class directly; QShortcut provides a higher-level interface to handle shortcut keys. When the user types the key sequence for a given shortcut, the shortcut's activated signal is emitted. This makes it possible to intercept events in order to override an item's default behavior, or act as a fallback for keys not handled by the item. The script below shows two different ways to set up a shortcut to open a dialog: from PyQt4 import QtCore, QtGui. The shortcut can be set up to contain all the key presses necessary to describe a keyboard shortcut, including the states of modifier keys such as Shift, Ctrl, and Alt. so when the button is pressed, it "types" a string of characters which can be used as a shortcut. Here all defined QActions are listed. Summary. bool QAction:: showStatusText (QObject *object = nullptr) Updates the relevant status bar for the UI represented by object by sending a QStatusTipEvent. Widget was shown on screen ( QShowEvent). edited Aug 31, 2023 at 22:37. the focus item now has the option to override the shortcut (by accepting the shortcut override event). In your code, #include <QShortcut> and then you will be able to add a shortcut key for a slot like this: QShortcut *shortcut = new QShortcut(QKeySequence("Ctrl+O"), parent); QObject::connect(shortcut, SIGNAL(activated()), receiver, SLOT(yourSlotHere QString QKeySequence:: toString ( QKeySequence::SequenceFormat format = PortableText) const. QtGui. Return a string representation of the key sequence, based on format. Use addMenu() to insert a menu into a menu bar. Apr 13, 2012 · I want to include a mouse event in a shortcut to perform a certain action. Contains event parameters for expose events. Jan 28, 2022 · I'm trying to figure out how to override a key shortcut. Therefore, the shortcut does not work until keyboard focus is removed form the QSpinBox. PySide2. QContextMenuEvent::Keyboard. QContextMenuEvent::Other. 3 ApplicationWindow { width: 640; height: 480; visible: true Action {shortcu Detailed Description. Feb 17, 2016 · As for ShortcutOverride events, they come for every keypress because any key or combination of keys can be registered as a shortcut. A shortcut key can be specified by preceding the preferred character with an ampersand in the Normally this means the right mouse button was clicked, but this is platform dependent. The event was sent by some other means (i. Sep 1, 2013 · I've implemented a dialog with two customized text-editor inside(Two editor objects with same class) This custom widget is an inherited class from QWidget and it has two widgets inside, one is a ac Push (click) a button to command the computer to perform some action, or to answer a question. edited Feb 22, 2016 at 23:50. ) A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent Sep 22, 2014 · The documentation on assigning a shortcut to a QPushButton is as follows: A shortcut key can be specified by preceding the preferred character with an ampersand in the text. Aug 26, 2020 · Hello, I am a beginner QT/Visual studios user (c++). Check the checkbox by autoDefault or default. I am trying to make a keyboard shortcut for one of my methods in my code. The result of calling this Constructs a shortcut event for the given key press, associated with the QShortcut ID id. "E&xit" will create the shortcut Alt+X for a button, or in a menu allow navigating to the menu item by pressing "x". Show. modifiers() with this one: modifiers = Qt. The code I have so far is: void plotspace::mousePressEvent(QMouseEvent*event) {. 2. QAbstractButton provides support for both push buttons and checkable (toggle) buttons. QShortcut is used to connect keyboard shortcuts to PyQt signals and slots mechanism, so that objects can be informed when a shortcut is executed. Thanks for your reply. (use '&&' to display an actual ampersand). g. tr("Ctrl+O", "File|Open")), parent) When the user types the key sequence for a given shortcut, the shortcut’s activated() signal is emitted. toString(). Simulates pressing a key with an optional modifier on a window. Apr 27, 2012 · AFAIK for most scenarios like this setting the shortcut context to WidgetShortcut is the correct thing to do. The QAction class provides an abstract user interface action that can be inserted into widgets. This means for QAction, that it has to be added to at least one visible widget. For example, mnemonic (“E&xit”) returns Qt::ALT+Qt::Key_X , mnemonic (”&Quit”) returns ALT+Key_Q , and mnemonic (“Quit”) returns an empty QKeySequence . The command is for an emergency stop, i want to implement a USB button that can be configured with a keyboard shortcut. ) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is Qt 的主事件循环( QCoreApplication::exec ())从事件队列中获取本机窗口系统事件,将它们转换为 QEvent,并将转换后的事件发送到 QObject 。 一般来说,事件来自底层窗口系统( spontaneous () 返回 true ),但也可以使用 QCoreApplication::sendEvent () 和 QCoreApplication::postEvent QCheckBox (class): QCheckBox is a widget in Qt that provides a two-state on/off toggle button, often used for representing binary choices or enabling/disabling features. The QShortcut class provides a way of connecting keyboard shortcuts to Qt's signals and slots mechanism, so that objects can be informed when a shortcut is executed. (void) new QShortcut(Qt::Key_Up, this, SLOT(on_movePositiveButton_pressed())); And that works nicely. Returns the key sequence that triggered the event. activeFocus } In Qt 5. shortcut = QShortcut(QKeySequence(self. I know that QShortcut can be used to attach shortcuts to the class that displays (for example) my window widget. If the shortcut action is disabled then the keyPessEvent is called as expected. For example if you write this code : A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. widgets) to signal that they will handle the shortcut themselves, by accepting the event. A shortcut can be enabled or disabled with setEnabled(), and can have "What's This?" help text set with setWhatsThis(). Subclassing QApplication and implementing notify () Sending your own events. ) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. It works fine for “regular” keys, but it is not working for keys that emulate the ESC, F1, F2 and other “special” keys. The base class of all event classes. 0. We would like to show you a description here but the site won’t allow us. Next we will link the button click event to that function. I could make it work using Mar 19, 2012 · A shortcut should be triggered if it has a valid parent widget and this parent widget receives events (id est it is not hidden). override: prevent the shortcut action under some circumstances. A command button is rectangular and typically displays a text label describing its action. Right button! Action triggered! Note that widget event filtering is always performed before triggered() signal emission. connect(clicked) # inside main function # Note: you don't need the brackets for the function argument (thing in brackets) And now "clicked" will be Ctrl + Shift + P. BeforeItem (default) the order of key event Translations are made in the “ QShortcut “ context. This class implements an abstract button. Ctrl + Shift + D. When the user types the key sequence for a given shortcut, the shortcut's activated() signal is emitted. Key Handling Priorities. Ctrl+F), can be constructed with a QKeySequence. I have the left-click output the coordinates of the cursor, and I have rightclick do the same, but I also want to have the rightclick open a context menu. For example: shortcut = QShortcut(QKeySequence(tr("Ctrl+O", "File|Open")), parent) When the user types the key sequence for a given shortcut, the shortcut’s activated() signal is emitted. Pressing Tab is by far the most common way to move focus using the keyboard. I have a segment of code that calls a mousePressEvent. The default value is an empty key sequence. A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. In Qt 5. When a key is pressed or released, a key event is generated and delivered to the focused Qt Quick Item. e. Apr 12, 2011 · A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. QKeySequence. A double click on a field in the 'shortcut' column will open the wanted dialog. See also setShortcuts(). use the other constructor. Subclasses of this class handle user actions, and specify how the button is drawn. Event that will be sent when there is a request to open a file or a URL. Ownership of page is passed on to the QTabWidget. When the shortcut is about to trigger send shortcut override to the focus item instead. Use QMenuBar::addMenu () to insert a menu into a menu bar. This function is the same as addTab (), but with an additional Mar 21, 2022 · For adding shortcut you set its parent this. (Sometimes in data-entry applications Enter does the same as Tab; this can easily be achieved in Qt by implementing an event filter . When I click on it text on it changes to "press keys" then I need the user to type the shortcut keys he want to map then the text of the button changes to the keys pressed. The key sequence can be set to one of the standard keyboard shortcuts, or it can be described with a string containing a sequence of up to four key presses that are needed to activate the shortcut. Jun 21, 2011 · The question for this post concerns shortcut keys. When you close or hide the window, another screen like your desktop is displayed, so the shortcut does not work. That what I'm trying to do with a eventFilter. modifiers = event. For example, the value Qt::CTRL + Qt::Key_O results in "Ctrl+O". 4 import QtQuick. The widget will no longer receive Shortcut events for the shortcut’s key sequence (unless it has other shortcuts with the same key sequence). You can customize the text label, checked/unchecked states, alignment, and styles. Shortcut Override Events (QKeyEvent) shortcut: a key combination that triggers an action. The reason for a particular focus event is returned by reason () in the appropriate event handler. Access functions: shortcut() setShortcut() Signal changed() property shortcutContextᅟ: Qt. To add shortcut keys, you simply connect a shortcut key's activated() signal to the same slot. The action's triggered() signal is connected to the receiver's member slot. 8 and earlier, you can disable a Shortcut to prevent it processing shortcut events under certain conditions. Jun 17, 2014 · 39. QExposeEvent. Events and Event Classes. QEvent Nov 9, 2020 · How do I implement keyboard shortcuts (to run a function) in PyQt5? I see I'm supposed QAction in one way or another, but I can't put the two and two together, and all examples don't seem to work with PyQt5 but instead PyQt4. For hard-coded shortcuts, integer key codes can be specified with a combination of values defined by the Qt::Key and Qt::KeyboardModifier enum values. . ShortcutContext # This property holds the context for the action’s shortcut. A Concrete Example. Access functions: Removes the shortcut with the given id from Qt's shortcut system. The Keys attached property can be configured to handle key events before or after the item it is attached to. [since 6. Events and Signals/Slots. key() Return type: int. QKeyEvent. For example, I have to click the check button twice (and say twice yes' in the pop-up warning message) until I see a check. It has a checkmark that appears when the box is checked and disappears when it's unchecked. With some modifications it can do whatever you need in your project. My "hack" : The only solution I got was to process manually the shortcut : 1/ override the QDialog::event() method, with : int QTabWidget:: addTab ( QWidget * page, const QIcon & icon, const QString & label) This is an overloaded function. ambiguous specifies whether there is more than one QShortcut for the same key sequence. Ctrl + Shift + T. It works well with the "+" on the numeric keypad though. ) A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. I am using Qt. Qt 's main event loop ( QCoreApplication::exec ()) fetches native window system events from the event queue, translates them into QEvents, and sends the translated events to QObject. It has to be processed at the earliest possible moment when the engine doesn't know yet if the pressed key is going to be used as a shortcut Aug 20, 2010 · I’ve created a QT class (QObject public inheritance) that uses sockets to grab LIRC keys and generate KeyPressEvents through QApplication::postEvent for all the other QT widgets and alike. See also shortcuts() and shortcut. bool nativeEvent(const QByteArray& eventType, void* message, qintptr* result); A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. (In the case of ambiguity, the activatedAmbiguously () signal is emitted. clicked. Thanks. May 15, 2011 · The Menus example demonstrates how menus can be used in a main window application. Warning: You should not normally need to use this function since Qt's shortcut system removes shortcuts automatically when their parent widget is destroyed. Reimplementing QObject::event () Event Filters on QObject. If you close or hide MainWindow means that the shortcut couldn't work because its parent was not called or found. A shortcut's key sequence can be set with setKey() and retrieved with key(). Controls 1. Returns the shortcut key sequence for the mnemonic in text , or an empty key sequence if no mnemonics are found. Returns the code of the key that was pressed or released. Though it is not longer maintained it currently works with Qt5. QEvent For example, "&File" for a menu will create the shortcut Alt+F, which will open the File menu. It can be either a pull-down menu in a menu bar or a standalone context menu. Nov 22, 2017 · So to avoid having a potential focus scope catastrophe, I've written most of the keybindings as Shortcuts. The Sliders example shows how to use the different types of sliders available in Qt: QSlider, QScrollBar and QDial. Left button! Action triggered! while for right mouse button the result will be. Contains event parameters for widget focus events. Focus events are sent to widgets when the keyboard input focus changes. auto coords_relative_action = new QAction("Relative coordinates", this); coords_relative_action->setShortcut(Qt::Key::Key_F6); Keyboard Focus in Qt Quick. Detailed Description. Ctrl + B. A global shortcut/hotkey for Desktop Qt-Applications. Jan 22, 2014 · You can set the shortcut keys in the QtDesigner in the 'Action Editor' (Tab at the bottom, the 'Signal/Slot Editor' tab is selected by default). bool nativeEvent( const QByteArray& eventType, void* message, long* result ); to. The widget might consume and perform an action on a given shortcut. Hi, I have the following code: import QtQuick 2. keyboardModifiers() I also suggest for you to map the Qt types to your own readable strings in the shortcut tuple in order to produce the desirable output value. See Key for the list of keyboard codes. [static noexcept] int QEvent:: registerEventType ( int hint = -1) Registers and returns a custom event type. These keys are physical buttons on a piece of external hardware. QEvent. On Windows, this means the menu button was pressed. By example Ctrl+Mouse Single Click or Shift + Mouse Double Click. 1. The shortcut can be set up to contain all the key presses necessary to describe a The widget will no longer receive QEvent::Shortcut events for the shortcut's key sequence (unless it has other shortcuts with the same key sequence). Returns true if an event Jan 24, 2018 · On Mac, this method is called before a menu appears (menuAboutToShow on Qt), but also before a shortcut is triggered, allowing to validate the menu at the time the action occurs. If the shortcut override is accepted, the event is delivered as a normal key press to the focus widget. bool QAction:: showStatusText ( QWidget * widget = 0 ) Updates the relevant status bar for the widget specified by sending a QStatusTipEvent to its parent widget. Checkable buttons are implemented in the QRadioButton and QCheckBox classes. 9, a better mechanism has been introduced for this. Apr 5, 2023 · Hi, the function declaration of nativeEvent () has changed slightly in Qt6 so it will work again if you change: // Qt5 flavor. QObject::installEventFilter () allows an object to intercept events destined for another object. Different Methods to Handle Events in Qt. Push (click) a button to command the computer to perform some action, or to answer a question. ) Pressing Tab, in all window systems in common use today, moves the keyboard focus to the next widget in a circular Dec 17, 2013 · 2. Returns true if an event was sent, otherwise returns false. not by the mouse or keyboard). OverflowAI is here! AI power for your Stack Overflow for Teams knowledge community. Aug 3, 2020 · I have a QPlainTextEdit and I wanted to add a shortcut to an action for toggling comment pActionToggleComment->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Sl The widget will no longer receive QEvent::Shortcut events for the shortcut’s key sequence (unless it has other shortcuts with the same key sequence). I have a button in the page added via the Qt Creator. ) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is Jan 22, 2012 · I take back the trivial' word. Event Propagation. This event gives you an option to cancel shortcut handling, if needed. The accept flag set with accept (), and cleared with ignore (). This convenience function creates a new action with the text text and an optional shortcut shortcut. This means your application can be active, inactive, minimized or not visible at all and still receive the shortcuts. I want to programmatically click this button. This property holds the shortcut's key sequence. double trange = _timeonright - _timeonleft; Valid keycodes for this property can be found in Qt::Key and Qt::Modifier. For example: Shortcut { enabled: !someItem. The widget will no longer receive QEvent::Shortcut events for the shortcut's key sequence (unless it has other shortcuts with the same key sequence). The option can be toggled with a shortcut, but the shortcut cannot be the same, so it can only be added to one action, and is not visible on the other. The basic QEvent contains only an event type parameter and an "accept" flag. As a result, if you have Returns the list of shortcuts, with the primary shortcut as the first element of the list. Feb 13, 2019 · QAction::eventFilter: Ambiguous shortcut overload: ?C. QFocusEvent. There is no default shortcut key. – Adam Sirrelle. Using Events. If delay is larger than 0, the test will wait for delay milliseconds before pressing the key. 5] QShortcutEvent:: QShortcutEvent (const QKeySequence & key, const QShortcut * shortcut = nullptr, bool ambiguous = false) May 21, 2021 · Using QShortcut allows you to set shortcuts which prevent Maya's native hotkeys from firing regardless of which widget is selected. QShortcutEvent. I tried ui-&gt; Constructs a shortcut event for the given key press, associated with the QShortcut ID id. In addition, if the shortcut context is Qt::WindowShortcut (default) the widget has to be active. Sadly this does mean that the keyEvents won't work as they seem to get overloaded by the QShortcut. Member Function Documentation. QAction *QMenu:: addAction (const QString &text, const QObject *receiver, const char *member, const QKeySequence &shortcut = 0) This is an overloaded function. (In the case of ambiguity, the activatedAmbiguously() signal is emitted. Installing Event Filter on QApplication. When mouse buttons are down over the viewport, I switch this tempoararily to Qt::WidgetShortcut, which only means they can be activated if the widget received the shortcuts (But not the viewport widget, which is a child of my main window). shortcut = new QShortcut (QKeySequence (tr("Ctrl+O", "File|Open")), parent); When the user types the key sequence for a given shortcut, the shortcut's activated() signal is emitted. Context menus are usually invoked by some special Mar 21, 2017 · In the Qt Creator's UI view, select the button you want to make pressable for Enter. But there are cases Apr 25, 2015 · It seems it is happening when using the "+" just below the F1-F12 keys. Most of the cases the main different between autoDefault and default is how the button will be rendered. The hint provided will be used if it is available, otherwise it will return a value between QEvent::User and QEvent::MaxUser that has not yet been registered. The problem though is that your duplicate actions are in menu bars which cannot have focus (in the traditional widget sense), which is why it doesn't do anything. sp bn ov dk cx cw gk nj sh py