void GraphicsContext::drawWindowsBitmap(WindowsBitmap* image, const IntPoint& point)
{
    RetainPtr<CGColorSpaceRef> deviceRGB(AdoptCF, CGColorSpaceCreateDeviceRGB());
    // FIXME: Creating CFData is non-optimal, but needed to avoid crashing when printing.  Ideally we should 
    // make a custom CGDataProvider that controls the WindowsBitmap lifetime.  see <rdar://6394455>
    RetainPtr<CFDataRef> imageData(AdoptCF, CFDataCreate(kCFAllocatorDefault, image->buffer(), image->bufferLength()));
    RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateWithCFData(imageData.get()));
    RetainPtr<CGImageRef> cgImage(AdoptCF, CGImageCreate(image->size().width(), image->size().height(), 8, 32, image->bytesPerRow(), deviceRGB.get(),
                                                         kCGBitmapByteOrder32Little | kCGImageAlphaFirst, dataProvider.get(), 0, true, kCGRenderingIntentDefault));
    CGContextDrawImage(m_data->m_cgContext, CGRectMake(point.x(), point.y(), image->size().width(), image->size().height()), cgImage.get());   
}
PassRefPtr<BitmapImage> BitmapImage::create(HBITMAP hBitmap)
{
    DIBSECTION dibSection;
    if (!GetObject(hBitmap, sizeof(DIBSECTION), &dibSection))
        return 0;

    ASSERT(dibSection.dsBm.bmBitsPixel == 32);
    if (dibSection.dsBm.bmBitsPixel != 32)
        return 0;

    ASSERT(dibSection.dsBm.bmBits);
    if (!dibSection.dsBm.bmBits)
        return 0;

    RetainPtr<CGColorSpaceRef> deviceRGB(AdoptCF, CGColorSpaceCreateDeviceRGB());
    RetainPtr<CGContextRef> bitmapContext(AdoptCF, CGBitmapContextCreate(dibSection.dsBm.bmBits, dibSection.dsBm.bmWidth, dibSection.dsBm.bmHeight, 8,
        dibSection.dsBm.bmWidthBytes, deviceRGB.get(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst));

    // The BitmapImage takes ownership of this.
    CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext.get());

    return adoptRef(new BitmapImage(cgImage));
}