QT & acdbDisplayPreviewFromDwg

Hi to all,

I want create a thumbnails dialog with QT, to show a dwg file (one or more dwgs); I've

writed the following codes:

HWND acadHandle = adsw_acadMainWnd();
QWinWidget win(acadHandle);
symPreviewDiag diag(&win); // the QT dialog

::EnableWindow (acadHandle, true);
::SetFocus (acadHandle);


diag.setWindowModality(Qt::WindowModality::ApplicationModal);

diag.show();
QPlatformNativeInterface* inter = QGuiApplication::platformNativeInterface();

QWindow* w=diag.windowHandle(); // is NOT equal to 0
HWND h = static_cast<HWND>(inter->nativeResourceForWindow(QByteArrayLiteral("handle"), w)); // is NOT equal to 0


bool b = false;
b = acdbDisplayPreviewFromDwg(result->resval.rstring, h, (Adesk::UInt32 *)RGB(255,0,255)); // the b value is 'true'
diag.update();

(void) a.exec();

I see the qt dialog but i don't see the dwg files ... :( !

Must I use a QWidget child of QTDialog ?

Which type of QWidget ?

Many thanks

Leonard

Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.