c++qtqimageqtguihbitmap

QImage from HBITMAP

In my windows-only program, I use a third-party library, which returns a HBITMAP.

Is there a way to initialize a QImage from its contents, i.e. to convert it to a QImage?

Solution

  • This is the way to do it for Qt 4 (QtGui):

    QImage image(QPixmap::fromWinHBITMAP(hBitmap).toImage());

    This is the way to do it for Qt 5 (QtWinExtras):

    QPixmap pixmap = QtWin::fromHBITMAP(hBitmap);
QImage image = pixmap.toImage();

// or

QtWin::imageFromHBITMAP(hdc, hBitmap, width, height)