[Interest] Qt5.1, Get "HWND" from "QWidget" ?

[Friedemann Kleint]

Hi,

the "official" solution is:

Add QT += gui-private  to your project and use:

#include <QWindow>
#include <qpa/qplatformnativeinterface.h>

widget->show();
if (const QWindow *w = widget->windowHandle()) {
     HWND hwnd  = 
(HWND)QGuiApplication::platformNativeInterface()->nativeResourceForWindow(QByteArrayLiteral("handle"), 
w);

This requires the window to be visible (underlying native window must 
exist).

Inofficially,  (HWND)widget->winId(); still works, note that it enforces 
the creation of a native window, though.

Regards,
Friedemann

-- 
Friedemann Kleint
Digia, Qt