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Deleting a HBitmap placed into a QLabel
//buffer is a map of QLabels which are filled with images.
void LoadPixmapFromBitmap(HBITMAP hBitmap, std::map<int, QLabel*>& buffer, int pixmapindex)
{
    QPixmap pix;
    pix = QPixmap::fromWinHBITMAP(hBitmap);

    QPixmap temp(pix);
    QSize sz(164, 121);
    QPixmap resized(temp.scaled(sz));

    QMatrix rotation;
    rotation.rotate(90);
    QPixmap rotated = resized.transformed(rotation);

//an attempt to delete the previous image properly and put in a new one.  This doesn't seem to work.
    if (buffer[pixmapindex]->pixmap() != NULL)
    {
        HBITMAP hbtmp = buffer[pixmapindex]->pixmap()->toWinHBITMAP();
        buffer[pixmapindex]->clear();

        HDC dc = GetDC(this->winId());
        //HBITMAP p_old = SelectObject(dc, hbtmp);

        BOOL deleted = DeleteObject(hbtmp);
        if (!deleted)
            PrintMsg("temp not deleted");
    }

//////////////////////////////////end of attempt
    buffer[pixmapindex]->setPixmap(rotated);

    BOOL success = DeleteObject(hBitmap);
    if (!success)
        PrintMsg("hBitmap was not deleted");
}