Create QAction with shortcut, without inserting in menu
bind, c++, qaction, qt
Solution
`QAction` is dormant until you insert it somewhere. As vahancho has suggested, use `QShortcut`. You need to instantiate the shortcut for each top-level widget (window) where you want it to be active. Thus if you have 5 top-level windows, you'll need 5 shortcuts, each having one of windows as its parent.
There is no way to use `QShortcut` as a global shortcut without the gui. `QShortcut` is only active when its associated widget has focus. The widget could be a top-level window.
System-global shortcuts are the subject of this question.
Problem
``` #include "mainwindow.h" #include "ui_mainwindow.h" #include <QDebug> #include <cassert> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); QAction* back = new QAction(this); back->setVisible(true); back->setShortcut(QKeySequence("Ctrl+M")); bool cres = connect(back, SIGNAL(triggered(bool)), this, SLOT(mySlot())); assert(cres); } ``` In this code I tried to catch `Ctrl+M` key event. I don't want to put the action in menu. `connect` returns true but `mySlot` is never called. When action is inserted in menu, shortcut works well. What I have done wrong?