Qt5 and QWinWidget

[EmmanuelC]

Hello,
I'm trying to display a Qt widget (a QLineEdit to be precise) in a MFC window. To do so, I'm using QWinWidget. I am using Qt5.12.3

It displays well the QLineEdit, but the problem I have is that when I want to update the field and click on it, it's disappearing...
Then when I click on another window in my application, it's reapprearing, and is well updated if I changed the text inside of it (even if it had disappeared)
Anyone has an idea on what's going wrong here? May it be due to the version of Qt I am using? Do you know which is the last one that is safe with QWinMigrate?

Here is my code :

	CRect ControlArea2;
	m_Control3.GetClientRect(ControlArea2);
	HWND hWnd_TransfFunction = m_Control3.GetSafeHwnd();
	QWinWidget w(hWnd_TransfFunction, 0, 0);
	QWidget *widget = new QWidget(&w);
	QHBoxLayout *hbox = new QHBoxLayout(widget);
	QLabel *label = new QLabel("Enter text:", widget);
	QLineEdit *edit = new QLineEdit(widget);
	hbox->addWidget(label);
	hbox->addWidget(edit);
	widget->move(0, 0);
	widget->setBackgroundRole(QPalette::Base);
	w.setGeometry(ControlArea2.left, ControlArea2.top, ControlArea2.Width(), ControlArea2.Height());
	w.setFixedSize(ControlArea2.Width(), ControlArea2.Height());
	w.show();

[Christian Ehrlicher]

Why do you ask the same question you did two days before --> closed.
https://forum.qt.io/post/562731