Qt shortcut event Everything works fine but now I want to add a shortcut (let's say F1) to perform the exact same operation, when I push F1 it displays shortcut handling (if a widget accepts the ShortcutOverride event for instance; or if a QAction exists with this key) event filters; Please give more information. use the other constructor It turns out, that the filter works well, if I return yes in the event filter, the shortcut is not propagated to the TextEdit, so far so good. For example: Shortcut { enabled: !someItem. Show. to restrict the shortcut to operating only on the widget and not on the window as a whole, (Qt. If Constructs a shortcut event for the given key press, associated with the QShortcut ID id. Is this possible? This is what I have done, and in Linux it works. The "Responder Chain" is a very good paradigm for menu management, unfortunatly not easy to implement in Qt. The reason why I also check for key release events is to only re A keyboard shortcut might also conflict with a shortcut that your window manager uses for its own purposes. The shortcut operates on its parent, listening for QShortcutEvent s that match the key sequence. int QKeyEvent:: count const. 1 Reply Last reply . In general, events come from the underlying window system (spontaneous() returns true), but it Constructs a key event object. Searching here and other placed like qtcentre I've seen this problem has come up but can't seem to get it working. 4. So in the constructor of your widget you can call setContextMenuPolicy and connect customContextMenuRequested to a slot to make a custom context menu. Each Pane has a menubar with identical associated QActions/Shortcuts. However, the order in which the keys enter QEvent::ShortcutOverride is always F first, then Ctrl+F (determined by whether Ctrl is pressed through modifiers()). Definition at line 675 of file qevent. Then, in a large modal QDialog (almost another application by The key events are created in C++ and sent to QGuiApplication::focusWindow() with qApp->sendEvent. 1 Reply Last reply Reply Quote 0. Consider using event->modifiers() to handle modifier keys and adjust your logic accordingly. This means for QAction, that it has to be added to at least one visible widget. Qt. SGaist Lifetime Qt Champion. @Rian-Firth said in How to override Paste or catch the moment before Paste happens in QLineEdit?. 6, mac) – dF. Warning: This function cannot always be trusted. id – int. But to make sure you can install an event filter on the QApplication and check which widget receives the shortcut override event initially. (use '&&' to display an actual ampersand). use the other constructor. You can also use an event-filter to achieve the same thing. By example Ctrl+Mouse Single Click or Shift + Mouse Double Click. 0 and shortcut for QPushButtons:. bool. QKeySequence(QtCore. 6. (pseudo) code showing what i'm doing: 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. This enum describes possible actions for mouse handling. QShortcutEvent. 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. Preventing conflicts If multiple widgets are using the same And if I press F1 keyboard shortcut (which is default shortcut to open Help window on Windows) I get the message about overloading the same shortcut: QAction::event: Ambiguous shortcut overload: F1 Which makes sense, of course. An alternative is that you show the help according to the current mouse position at the time F1 is pressed. – Jeet. Each time, I press Ctrl first, followed by F. All work except Ctrl and 0 to zoom reset. g. You need to write some custom logic to remember a list Maybe Qt docs for installEventFilter isn't absolutely clear, you need to install event filter to the object which events you want to filter. Ctrl+C for my own purposes). There's no signal but if you want to know when your widget has lost focus, override and reimplement void QWidget::focusOutEvent(QFocusEvent* event) in your widget. I want to handle the two key events Ctrl+Tab and Ctrl+Shift+Tab in order to switch between tabs in my application ("forward" and "backward" respectively). use the other constructor ambiguous specifies whether there is more than one QShortcut for the same A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. A child widget has been shown. ambiguous specifies whether there is more than one QShortcut for the same key sequence. I hope somebody can help me. Qt; Qt Programming; Keyboard shortcut event not received; If this is your first visit, be sure to check out the FAQ by clicking the link above. Typically, you can configure the Your buttons probably have a slot connected to their clicked() signal. A shortcut's key sequence can be set with setKey() and retrieved with key(). Refer to Qt documentation for handling special keys appropriately. The GUI is implemented in QML and has been handling input through key event handlers. setContext(QtCore. It is very obvious that I try things which I don't understand. I have a problem with Qt 4. . 2. (Qt 4. The QWidget::grabShortcut() function in Qt is used to reserve a keyboard shortcut for a specific widget. A shortcut can be enabled or disabled with setEnabled(), and can have "What's This?" help text set with setWhatsThis(). Focus event and shortcut dispatching Hey, I have multiple custom widgets, wrapped in QDockWidgets and docked next to each other. Next I tried to use a QAction with a space shortcut, which worked nicely when the space is clicked. In either case accept() the event and return true when it's the return key. Share. The modifiers holds the keyboard modifiers, and the given text is the Welcome to Qt Centre. But for some reason, Qt decides to dispatch the shortcut event alternating between each ambiguous action/shortcut. ) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is Constructs a shortcut event for the given key press, associated with the QShortcut shortcut. (menuAboutToShow on Qt), but also before a shortcut is triggered, allowing to validate the menu at the time the action occurs. The normal context is Qt::WindowShortcut, which allows the shortcut to trigger if the parent (the widget containing the shortcut) is a subwidget of the active top-level window. K 1 Reply Last reply . At least it would make sense IMHO. This will add the shortcut to the QAction (create triggered events) and set it as visibile text, e. It will be called whenever your widget has lost focus. Can any body tell, if something already exist in free use. isAmbiguous ¶ Return type:. 9, a better mechanism has been introduced for this. And if I press F1 keyboard shortcut (which is default shortcut to open Help window on Windows) I get the message about overloading the same shortcut: QAction::event: Ambiguous shortcut overload: F1 Which makes sense, of course. I'd like to know which docking widget the user worked with last, so i implemented the focusEvent: Qt Code: It seems to me that I have to intercept all events which eventually lead to a checkbox toggle: mousePressEvent and keyPressEvent; the latter should take care of both the space key (which toggles the checkbox by default if it has the focus) and a shortcut. self. Hello, I am a beginner QT/Visual studios user (c++). The Button have a shortcut , and I connect the button's released() to a funtion that will change the button text : c But for some reason, Qt decides to dispatch the shortcut event alternating between each ambiguous action/shortcut. Constructs a shortcut event for the given key press, associated with the QShortcut shortcut. The question for this post concerns shortcut keys. A shortcut can be enabled or disabled with setEnabled(), and # QWidget == widget shortcut is assigned to shortcut = QtWidgets. If you want to record key events (and probably mouse events, too), you need to install an event filter on the recording level customContextMenuRequested is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. The user can confuse it by pressing both Shift keys simultaneously and releasing one of them, for example. Key Handling Priorities. QKeySequence('Ctrl+B'), self. If the shortcut override is accepted, the event is delivered as a normal key press to the focus widget. activated. I know that QShortcut can be used to attach shortcuts to the class that displays (for example) my window widget. What you might find very useful is the function QKeySequence(). 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. See the "Gestures Programming":/doc/qt-5. The final question is, who triggers the action ? Congratulations to our 2023 Qt Champions! Unsolved Filtering shortcut in eventFilter not working. Depending on the ambiguity of the event, the shortcut will call the member function, or the ambiguousMember function, if the key press was in the shortcut’s context. Follow answered Sep 22 For example, "&File" for a menu will create the shortcut Alt+F, which will open the File menu. A shortcut can be enabled or disabled with setEnabled(), and Constructs a shortcut event for the given key press, associated with the QShortcut ID id. You can use Qxt. ShowToParent. Key for the list of keyboard codes. If you you just want to catch the event coming into your widget you can use QObject::installEventFilter it let's you catch any kind of events. Since this doesn't work on the actual QT examples what could be done to get it I need created shortcut grabber, such as used in Qt Creator keyboard mapping. From the Qt documentation:. QMainWindow not receiving keyPressEvent, even Note: ShortcutOverride events aren't handled in Qt by default. For some odd reason the developers of Trolltech decided to propagate UI events via two avenues, signals/slots and QEvent That's why I would like to discard the shortcut event. A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. Optionally, a keyboard modifier can be specified, as well as a delay Property Documentation [since 6. Not capturing keyboard shortcut keys in QT event filter (that forces text to upper case) 6. (pseudo) code showing what i'm doing: I take back the trivial' word. 4 Posts 2 Posters 2 @Korchkidu Works with Qt 5. toString(). Add a comment | Your Answer Reminder: Answers generated by artificial intelligence tools are not allowed on Stack Overflow. Focus In Event (focusInEvent()): That's why I would like to discard the shortcut event. The example given on the Qt Wiki is of a media player which pauses with Space but a QLineEdit might want to use the Space, which makes a lot of sense. The problem is that it is not done within QLineEdit class. I have tested setting ShortcutContext on the QAction to Qt::WidgetWithChildrenShortcut, Qt:: You can't say if the action actually receives the key event / shortcut, due to multiple parents and children. Constructs a shortcut event for the given key press, associated with the QShortcut shortcut. In the 'Property Editor' are more options for the 'shortcuts' (e. My code makes the UI program not not capturing keyboard shortcut keys because of QT event filter (that forces text to upper case). As I created a QShortcut by: shortcut = Constructs a shortcut event for the given key press, associated with the QShortcut ID id. Trouble with Event Filter for key presses. 1 on Ubuntu 14. This allows to avoid polluting your class with a pointer to access the shortcut. As a workaround I suggest, that you derive from QAction and implement your own event function. Though it is not longer maintained it currently works with Qt5. I would like to start using the Shortcut QML class to handle cases where I want behavior regardless of which object has focus. So, I guess this is not a Keyboard Event? maybe a Shortcut Event "QQuickAction::event: Ambiguous shortcut overload: +" when pressing "Ctrl++" Scheduled Pinned Locked Moved QML and Qt Quick qml qtquick shortcuts action qt5. The failure message is: QAction::eventFilter: Ambiguous shortcut overload: Ctrl+0. With the above example, does Ctrl+T quit the application on a Mac? With Qt 4. This is mostly the case when the user clicked on it. ) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is Constructs a shortcut event for the given key press, associated with the QShortcut ID id. S Offline. In this app there's a docking window with an action that also uses the shortcut Ctrl+S. the focus item now has the option to override the shortcut (by accepting the shortcut override event). 2>When the hot key is released, then the application stop record the voice. ) The widget shortcut doesn't really work. Having anything but a full frame on a Windows window seems to disable the "snap" shortcuts, even if the window can still be resized or moved with keyboard arrows (from See Qt. To add shortcut keys, you simply connect a shortcut key's activated() signal to the same slot. See also QShortcut. Either subclass and override event() to handle QEvent::ShortcutOverride or install a filter and check for the same. In an event handler like QWidget::keyPressEvent() I'd like to know if user has clicked a key with a modifier (e. @Axel-Spoerl, and I, thought you meant a keyboard shortcut within a Qt application you are writing, e. I've got a MainWindow widget with a QSplitter which contains two Pane widgets (subclassed from QFrame). Event objects contain event parameters. Thanks for contributing an answer to Stack Overflow! Using an event filter for the application also doesn't work because then no other widget would receive the space (e. A shortcut can be enabled or disabled with setEnabled(), and yet keyboard shortcuts are sent to the menu handler BEFORE the app either filters OR handles the event. A shortcut Hello everyone, I ran into a problem with shortcuts triggering, in a quite large application, on the Mac. I feel that DBUS messaging at either the character-by-character Keyboard Event layer, or it's mouse button equivalent, would be too slow, creating massive delays and overhead. 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 I am using QEvent::ShortcutOverride to handle two shortcuts, F and Ctrl+F. Even the mouse stuff doesn't work as expected: Somehow events seem to get lost. Qxt is an extension library for Qt providing a suite of cross-platform utility classes to add functionality not readily available in Qt. Improve this answer. Returns true if the key sequence that triggered the event is ambiguous. It will not work in modal dialogs. replied to p3c0 on last edited by #3. void MainWindow::closeEvent(QCloseEvent * event) { event->ignore(); } If you left the close button (X) visible, this method would also disable it from closing your app. I take back the trivial' word. 2025-01-13. Int key is the code for the Qt::Key that the event loop should listen for. QEvent::Show: 17: Widget was shown on screen . 4 webengine or webkit tab browser example you can see that you should be able to Zoom in/Zoom out and Zoom reset a page. I have implemented a CTRL+Tab which changes the item and the document associated to it. Each time I encounter these events (As well as key release events) I then call a function (checkShortcutsEnabled()) on my main window to switch the shortcut content depending on if no buttons are pressed or not. For example, I have to click the check button twice (and say twiceyes' in the pop-up warning message) until I see a check. How to check if [Shift + Tab] is being pressed in QT. Commented Feb 26, 2016 at 7:23. QEvent::ShowToParent: 26: This will cause any events of type QEvent::Shortcut sent to your actions to not trigger the 'triggered()' signals. eventfilter shortcut. my_lineedit, self. Access functions: I hope somebody can help me. If you want to handle the same application-wide shortcut with your menu, try to set it to Qt::ApplicationShortcut otherwise the Qt::WindowShortcut from your menu in your Window will accept and eat the key/shortcut event and it will never reach your application handler 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. the breakpoints above are not hit when i press a key that happens to be an unmodified shortcut key in the menu bar. enum QTest:: MouseAction. so when the button is pressed, it "types" a string of characters which can be used as a shortcut. And that code would translate the string information about the pressed key to a QT key event. That what I'm trying to do with a eventFilter. QTextEdit widgets). The window shortcut works fine. This will override the shortcut and pass the event through to the widget to handle as usual. But on the embedded device, all ::event ever receives is a ShortcutOverride event, never any key press or release events. QEvent does implement the << operator for QDebug, so I could easily see that most spontaneous events are redraw events and that my problem is not that subsequent "∫" characters are received from a different mechanism, but that they are all delivered as QInputMethod events. It has Global Shortcut (hot keys) which detects key presses even if From Qt offical document: When the user types the key sequence for a given shortcut, the shortcut’s activated() signal is emitted. Returns true if the key sequence that triggered the event Constructs a QShortcut object for the parent, which should be a QWindow or a QWidget. catch the moment before Paste is about to happen in QLineEdit and do some preparations. connect(self. Follow It is a very useful information about the key combination in Qt key press event. wrote Hi all, I'm trying to block/filtering shortcuts regarding some condition in a event filter method at application level, but it has no effect. If you want to handle the same application-wide shortcut with your menu, try to set it to Qt::ApplicationShortcut otherwise the Qt::WindowShortcut from your menu in your Window will accept and eat the key/shortcut event and it will never reach your application handler Qt’s main event loop ( exec()) If the shortcut override is accepted, the event is delivered as a normal key press to the focus widget. The Keys attached property can be configured to handle key events before or after the item it is attached to. The command is for an emergency stop, i want to implement a USB button that can be configured with a keyboard shortcut. Sends a Qt key event to window with the given key ascii and an associated action. In Qt 5. At Constructs a shortcut event for the given key press, associated with the QShortcut ID id. Access functions A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. use the other constructor Qt Development; General and Desktop; Shortcuts and widget keyPressEvent; QtWS: Super Early Bird Tickets Available! Thanks, that appears to be the solution. See here The QLineEdit::paste() just triggers the internal paste function (), which takes the content from Constructs a shortcut event for the given key press, associated with the QShortcut shortcut. In addition, if the shortcut context is Qt::WindowShortcut (default) the widget has to be active. See also Qt Widget Shortcut Release . So if you want a trully real pan-application-wide shortcut, then you need to override application's notify() method. ApplicationShortcut) shortcut. shortcut – PySide6. bool QShortcutEvent:: isAmbiguous const. To give focus to a widget, use QWidget::setFocus(Qt::FocusReason). Why? I'm wondering whether it's possible to use Qt's keyboard shortcut facilities (either QShortcut or QAction) to fire events depending on the up/down state of k If you want to handle the same application-wide shortcut with your menu, try to set it to Qt::ApplicationShortcut otherwise the Qt::WindowShortcut from your menu in your Window will accept and eat the key/shortcut event and it will never reach your application handler @NIXIN as i saidthis only works if the button has input focus. h. K Offline. This means that when the user presses the specified shortcut, the focus will automatically be given to the widget and its associated event handler will be triggered. If your menu is hidden per default the easiest solution is to add the actions Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog The QShortcutEvent class provides an event which is generated when the user presses a key combination. My child-window will have a menu which can be integrated into the QMdiArea or segregated and attached to the child itself. Context menu functions (copy, paste) work but the keyboard shortcuts do not. However, this doesn't seem to work as expe A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. Key_M), QWidget) shortcut. I want to include a mouse event in a shortcut to perform a certain action. "E&xit" will create the shortcut Alt+X for a button, or in a menu allow navigating to the menu item by pressing "x". (pseudo) code showing what i'm doing: The QEvent class is the base class of all event classes. 8 and earlier, you can disable a Shortcut to prevent it processing shortcut events under certain conditions. 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); Qt's main event loop (QCoreApplication::exec()) by accepting the event. This feature is not implemented in Qt. 2 & 4. QEvent::ShowToParent: 26: That's why I would like to discard the shortcut event. In your window class, you can override closeEvent() to ignore it and prevent your application from closing. So, indeed this has little to do with Qt, it seems. 0/gestures-overview. If key is 0, the event is not a result of a known key; for example, This extra data is used by the shortcut system, to determine which shortcuts to trigger. QShortcut. In your case it is QLineEdit(Input?) and not the MainWindow. This application features a QMdiArea and a child-window. 4] clearButtonEnabled: bool This property holds whether the key sequence edit displays a clear button when it is not empty. General and Desktop. WidgetShortcut). Running the Qt 5. (In the case of ambiguity, the activatedAmbiguously() signal is emitted. The alternative is to install event filter for the application object but that I suspect would be slower and requires slightly more code. QShortcut * shortcut = new QShortcut(QKeySequence(Qt::Key_Tab),button,SLOT(click())); shortcut->setAutoRepeat(false); Share. Int key is the code for the Key that the event loop should listen for. Note: ShortcutOverride events aren't handled in Qt by default. I am trying to make a keyboard shortcut for one of my methods in my code. As a result, if you have QShortcut objects with same QKeySeqence CTRL+F When the shortcut is about to trigger send shortcut override to the focus item instead. ; When to use it. 6, I set up an event filter to force text entered by the user in QLineEdits and QTextEdits to upper case. Constructs a shortcut event for the given key press, associated with the QShortcut ID id. A shortcut’s context decides in which circumstances a shortcut is allowed to be triggered. Cause The widget might not have focus. to trigger its menus. In QAction::event the event type QEvent::Shortcut never occurs. @class BoxPopupMenu : public QComboBox Double-check your use of event->key(), event->text(), and other relevant methods from QKeyEvent. Again, that sounds counter-intuitive and convoluted. 6 on Windows and Linux But for some reason, Qt decides to dispatch the shortcut event alternating between each ambiguous action/shortcut. Event Not Received. With some modifications it can do whatever you need in your project. BTW, how do these shortcuts and keys work? shortcut – PySide6. script_to_run) What I want is for this to instead run on keyboard button release. A shortcut’s key sequence can be set with setKey() and retrieved with key(). This property was introduced in Qt 6. Hi all, I'm trying to block/filtering shortcuts regarding some condition in a event filter method at application level, but it has no effect. wrote on last edited by #7. If you really want key sequences (meaning: press Key1, press Key2, press Key3 and not hold Key1, hold Key2, hold Key3), then this component won't help you at all. Otherwise, it triggers the shortcut action, if one exists. 3. If the window manager consumes the key event, the Qt Creator shortcut will not be activated. I've tried all combinations of ShortcutContexts with setShortcutContext(). 1 Reply Last reply 0 @Mary02 said in How set mouse scrolling as a shortcut: How can I add this variable to my eventFilter? The Qt way is to use signals/slots to communicate the change of the shortcut changes to whatever part of your app needs to know. The following is a part of a code that I use to capture User Defined Shortcuts. I was trying to implement a widget base on top of QWidget with a custom way to handle context menu to suit your needs when I realize that using ActionsContextMenu policy with actions directly own by the widget does exactly the behavior you are expecting. Korchkidu. 4. This shortcut has the context Qt::WidgetShortcut. When I interpret the mapping in the parent window (via ::event()) on the laptop (with a regular keyboard), everything works fine. You may still want to add a pointer to A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. Hi all, I'm completely new to Qt. Commented Apr 25, 2010 at 13:26. PySide2. 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. isAmbiguous ¶ Return type. Solution I also debugged inside the Qt Framework, and stepping through QMenu::keyPressEvent and QAction::event, but there seems to be no correct handling of the pressed key. Prevents action Once released, the widget will no longer perform the action associated with the shortcut key when it's pressed. 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 Hi! I have a QPushButton's derive class. 04. The important part here is the call QWidget::AddAction and QAction::setShortcutContext(Qt::WidgetWithChildrenShortcut); – veio Commented Jun 19, 2016 at 17:14 new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close())); You can create it in the contructor of your form. 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. 12 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I take back the trivial' word. I'm not 100% sure if your line edit will receive the shortcut override event, but i think so. ) A shortcut is “listened for” by Qt’s event loop when the shortcut’s parent widget is receiving events. How to generate key press events in Qt app to system (win7) (simulate user pressing keys on keyboard)? 1 How to capture a sequence of key presses and then fire an event in Qt? Pressing Alt+F4 results in a close event being sent to your top level window. So, as with the mouse, I tried to grab the keyboard LineEdit gain focus and just debug the key pressed in LineEdit::keyPressEvent but this method was not called. 7 on linux, didn't try on windows yet but I don't know why the behavior should be different). Thanks, that was actually a very good suggestion. Ctrl+F), can be constructed with a QKeySequence. I install the event filter in the widget's constructor and trap the shortcut delete key in the event filter method. A shortcut can be enabled or disabled with setEnabled(), and Setting the shortcut context to Qt::ApplicationShortcut has a serious flaw. QShortcut(QtGui. you could override eventFilte of your MainWindow and install it on QLineEdit. If enabled, the key sequence edit displays a trailing clear button when it contains some text, otherwise the line edit does not show a clear button (the default). 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 the doc says the App should get a crack at the event BEFORE any other processing, which i took to mean before looking in the menu bar for a matching key shortcut. activeFocus } In Qt 5. QShortcut( QtCore. 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. Learn more. Or point me where to find, source of Qt Creator shortcut edit class grab ? Please use code tags, it makes the code much easier to read. Widget was shown on screen ( QShowEvent). seems the best option so far. The type parameter must be KeyPress, KeyRelease, or ShortcutOverride. Here is a list of key events that you can handle in Qt: Shortcut Event (shortcutEvent()): Sent when a shortcut key sequence is activated, allowing you to handle shortcuts without subclassing. I've been building small apps, trying to get familiar with how everything works, and I feel like some of the things I'm doing (or want to do) can surely be done better. QEvent. But I can't figure out how to be notified when the shortcut is released. This means I do not receive the event half the time. html document. A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. This function was introduced in Qt 6. My application is as below: 1>When the hot key is pressed , then the application start to record voice. This does, in fact, install the shortcut (Qt 4. If key is 0, the event is not a result of a known key; for example, it may be the result of a compose sequence or keyboard macro. While surfing the net, I was only able to find the function : void MainWindow::keyPressEvent(QKeyEvent *event) { Qt Keyboard Shortcuts . A shortcut can be enabled or disabled with setEnabled(), and It would not be using D-Bus at the low level recognition of QKeySequence sequences, and Qt MouseEvent recognition of shortcut button events and combinations. The script below shows two different ways to set up a shortcut to open a dialog: In Qt, you can handle various key events using the key event handlers provided by QWidget and its subclasses. For Example, I have a button having text on it "change". 157. SGaist Lifetime Qt Champion last edited by . The situation : I have an application-wide QAction to copy my main document's selection, tied to the QKeySequence::Copy shortcut, with (a priori) Qt::ApplicationShortcut context. That's why I would like to discard the shortcut event. Qt's main event loop (QCoreApplication::exec()) by accepting the event. Sadly using focus policy Qt::ClickFocus does not prevent Leaving with keyboard, it just prevent Entering with keyboard. To start viewing messages, select the forum that you want to visit from the selection below. In the constructor I understand that QEvent::ShortcutOverride occurs when there is a shortcut registered in the parent and the child wants to "go against the rule". Then accept the event, do the widget's specific handling, and then Extraneous Information: I am attempting to build an application using Qt. PySide6. (It is executed if Ctrl+S is pressed when the focus is anywhere except the docking window I mentioned. If someone has a better idea, I would appreciate, but for now, I will simply use a QShortcut and manually enter the shortcut with QAction's text. Reply Quote 0. 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 A shortcut should be triggered if it has a valid parent widget and this parent widget receives events (id est it is not hidden). The widget might consume and perform an action on a given shortcut. I want to display a special text in a QTextEdit when the user clicks a button, but only when the button is pressed, as soon as it's released, i want another text to come up. my_func) This will only be activated when the widget has the keyboard focus. By default, this property is set to Qt::WindowShortcut. The embedded device has a controller where some buttons act as keyboard events (press/release). It would not be using D-Bus at the low level recognition of QKeySequence sequences, and Qt MouseEvent recognition of shortcut button events and combinations. The key sequences themselves (e. Furthermore, if the event is accepted then a QEvent::KeyPress is A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events. However, sometimes there is a need to override a shortcut, like you do. However, clicks are usually done on a specific widget, and there is makes sense to simply It seems QEvent is the only way to make a shortcut with Press/Release functionality. 5. Normally you don't need to use this class directly; QShortcut provides a higher-level interface to handle shortcut keys. [virtual] QShortcutEvent:: ~QShortcutEvent Destroys the event object. isAmbiguous ¶ Return type: bool. I ended up creating an event filter for my 3D viewport widget to check for mouse presses. 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. shortcut = QtWidgets. in the menu entry (only visible in the application, not in QtDesigner). 0. ui. From Qt offical document: When the user types the key sequence for a given shortcut, the shortcut’s activated() signal is emitted. 1. Also you don't need actually extra class for event filter. Ideally extracting a standalone testcase, that’s the easier to look at smile. This value has been added in Qt 5. For that you should call the slot directly instead. QtGui. 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. You may have to register before you can post: click the register link above to proceed. ; Releases shortcut It removes the association between the specified shortcut key and the widget's event handler. QTest::Shortcut: 3: A shortcut is activated. Also, please read the docs for Shortcut component, you're using it wrong. cfvj vixyhqnqb aava nnvu aacxwm pyeho tws uon bkyje wdsgq

Qt shortcut event. … This feature is not implemented in Qt.