How to trigger a hotkey to a QWindow using a QButton?

[SGaist]

Can you show the compiler error message please ?

[fabriciokash]

@SGaist said in How to trigger a hotkey to a QWindow using a QButton?:

Can you show the compiler error message please ?

Yes, sure.

Compile Output in Qt Creator

Detail: Changed button's name to exportBtn_2 and targetWidget to simulationWidget, but the error persists

[SGaist]

Did you include QEvent ?

[fabriciokash]

@SGaist said in How to trigger a hotkey to a QWindow using a QButton?:

Did you include QEvent ?

Yes, i do.

[fabriciokash]

@SGaist said in How to trigger a hotkey to a QWindow using a QButton?:

Did you include QEvent ?

I got the solution. I was doing #include <xdotool-master/xdo.h> and i think this file was causing some type of conflict. I just commented this line.

I gonna back to the event's problem

[fabriciokash]

void Simulate::on_selectAllBtn_clicked()
{
    QKeyEvent *eventPress = new QKeyEvent(QEvent::KeyPress, Qt::Key_A, Qt::ControlModifier);
    QKeyEvent *eventRealease = new QKeyEvent(QEvent::KeyRelease, Qt::Key_A, Qt::ControlModifier);
    QCoreApplication::postEvent(targetWidget, eventPress);
    QCoreApplication::postEvent(targetWidget, eventRealease);
}

This solution doesnt work. Is this code correct? As I commented, I created a QWindow from a window ID of a external program (in case, a gedit text editor) and put it on a QWidget. I dont know if this approach is for my case. I tried too use QApplication::setActiveWIndow and targetWidget->setFocus() before, but without success. Tried send the event to QWindow too, without success.

[SGaist]

You are trying to send these events to an external application ?
Which is it ?

[fabriciokash]

@SGaist said in How to trigger a hotkey to a QWindow using a QButton?:

You are trying to send these events to an external application ?
Which is it ?

Kind of it. I have a gedit text editor (external application) embed to a QWindow (intern application). And a QWidget is created from this QWindow, using QWidget *widget = QWidget::createWindowContainer(window);

In addition to that widget, i have too, on GUI, a QButton, called "Select All". When user click on this button, the system should select all text in text editor. So Im trying to send a Ctrl+A under the covers.

But I dont know if Im on right way to do this using that code.

[SGaist]

Which OS are you on ?

Sending key events through Qt's event loop like that won't work AFAIK. The application while embedded is still an external application.

[fabriciokash]

@SGaist said in How to trigger a hotkey to a QWindow using a QButton?:

Which OS are you on ?
Sending key events through Qt's event loop like that won't work AFAIK. The application while embedded is still an external application.

Im using Ubuntu 18.04.

There is a way to send the key event through OS?