how to set "Ctrl + c" for copy shortcut on a QMainWindow?

Herzl Sh

Hi, I am working on a QMainWindow and need to catch "ctrl +c" to operate copy of some data on it.

class MainWindow(QMainWindow):
    def __init__(self) -> None:

I have made a menuBar and add QAction with "Ctrl + c" shortcut to it:

  def _create_menu(self):

        file_menu = self.menuBar().addMenu("&File")

        copy_data = QAction(text="&Copy", parent=self)
        #copy_data.setShortcut("Ctrl+c")
        copy_data.setShortcut(Qt.CTRL + Qt.Key_C)
        copy_data.triggered.connect(self._on_copy_data)

         file_menu.addAction(copy_data)

and
create my function

    def _on_copy_data(self):
        self._bits_widget.copy()

But when I pressed on "Ctrl+c" _on_copy_data function didn't triggered.
When I use the menu bar and click on copy it's will be triggered.

Where is my mistake when I use other combine of keys like "Ctrl + l" it will work also.

I use Pyqt5 in ubuntu OS
Thanks

DJaq

Hello,

I'm not sure about whether it's the best idea or not, but I personally do it this way:

QAction* lInfoRowAction = new QAction("info", this);
lInfoRowAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_I));
addAction(lInfoRowAction);
connect(lInfoRowAction, SIGNAL(triggered()), this, SLOT(showInfoGeneral()));

Directly in a function in a class that inherits QMainWindow. This way, the shortcut will be global to the window.

Herzl Sh

Thanks,
But my problem is for "Ctrl + C" in python , "Ctrl + l" work for me.

DJaq

@Herzl-Sh
Are you focusing any widget (like a QLineEdit) inside your window? Because you could end up having an "ambiguous shortcut" warning if the widget already has the same shortcut.

Herzl Sh

@DJaq yes I have spinboxs. How can I to unfocus them?
there exist a child that Inherited from widget can focus to it and grab the ctrl + c there?
how I can to do it?

jsulm

@Herzl-Sh said in how to set "Ctrl + c" for copy shortcut on a QMainWindow?:

How can I to unfocus them?

https://doc.qt.io/qt-5/qwidget.html#clearFocus

SimonSchroeder

Because we had declarations of shortcuts littered all over the place we came up with the following solution to handle them in one place.

We derived a class MyApplication from QApplication and overrode bool notify(QObject *receiver, QEvent *e) override. Within this function we checked e->type() == QEvent::Shortcut. Everything that couldn't be handled is then forwarded to QApplication::notify.

We didn't override the Ctrl+C shortcut or anything similar. However, because this is so early in Qt's signal handling you could be lucky with this approach.