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C-/C++-Quelltext

void DrawGDIStretch3(HDC& p_hdc)
{
    Matrix transMatrix, rotmatrix;
    HDC hCompatible;
    HBITMAP hBitmapSource;


    //gdi bitmap

    hCompatible = CreateCompatibleDC(p_hdc);
    hBitmapSource = CreateCompatibleBitmap(hCompatible, GetDeviceCaps(p_hdc, HORZRES), GetDeviceCaps(p_hdc, VERTRES));
    Bitmap* pBitmap = new Bitmap(L"error.png");
    Status stat = pBitmap->GetHBITMAP(Color(255, 255, 255), &hBitmapSource);
    SelectObject(hCompatible, hBitmapSource);


    //the graphics object

    Graphics graphics(hCompatible);


    //matrix

    //transMatrix.Reset();

    //transMatrix.Translate(50.f, 50.f);

    //graphics.SetTransform(&transMatrix);

    rotmatrix.Reset();
    rotmatrix.Rotate(45.f);
    graphics.SetTransform(&rotmatrix);


    
    CachedBitmap cbBitmap(pBitmap, &graphics);
    graphics.DrawCachedBitmap(&cbBitmap, 0, 0);

    BitBlt(p_hdc, 0, 0, GetDeviceCaps(p_hdc, HORZRES), GetDeviceCaps(p_hdc, VERTRES), hCompatible, 0, 0, SRCCOPY); //bring to screen


    DeleteObject(hBitmapSource);
    DeleteDC(hCompatible);
}