Opening QVitualKeyboard automatically when opening a popup window

[Yina]

Hello

I have a textEdit that when click upon the textedit the QvirtualKeyboard hovers over it. My fix for this was a pop up window that opens. The issue now is that when opening the window you have to press on the textedit again which is annoying. So how could I make the QVirtualKeyboard come on screen when the pop up window opens?

I already tried this:

void PopUpWindow::showEvent(QShowEvent *)
{
    OpenKeyboard();
}

void PopUpWindow::OpenKeyboard()
{
    m_pUi->textEdit->setFocus();
    qGuiApp->inputMethod()->show();
}

But this occasionally opens the keyboard but then it immediatly closes again.

Kind regards
Yina