Embed 3rd party application into QWidget

[gonssoruiz]

Hi everyone,

I've been struggling with a question for some time that seemed quite easy at the beginning.

I want to embed an application (for example, Windows Calculator) into a QWidget. I've tried with this code:

Widget.cpp

Widget::Widget(QWidget *parent) : QWidget(parent)
{
  QProcess::startDetached("c:\\windows\\system32\\calc.exe");
  HWND ID = FindWindowA(NULL, "Calculator");

  QWindow *Window = QWindow::fromWinId((WId)ID);
  Window->setFlags(Qt::FramelessWindowHint);

  QWidget *Widget = QWidget::createWindowContainer(Window);

  QVBoxLayout *Layout = new QVBoxLayout(this);
  Layout->addWidget(Widget);
  
  setLayout(Layout);
}

main.cpp

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  Widget w;
  w.show();

  return a.exec();
}

The issue is that, although calculator opens, it shows behind every other window, and is placed in x:0, y:0 in screen.

Does anyone has any idea why is happening this?

Thanks