使用iImagingFactory加载高分辨率图像时出现内存不足异常

我正在尝试加载高分辨率图像(如3264x2448)。为此,我使用c_中的iImageFactory类。iImageFactory是从Microsoft站点下载的。如果我尝试加载高分辨率图像,就会出现“内存不足”异常。请看下面的示例:

IImage GetIImage(string fileName)
{

Bitmap bitmap = null;

Graphics graphics = null;
IntPtr hdcDestination = IntPtr.Zero;   
try    {
    IImage image = null;
    IImagingFactory imagingFactory = ImagingFactory.GetImaging();
    imagingFactory.CreateImageFromFile(fileName, out image);
    bitmap = new Bitmap(width, height);
    graphics = Graphics.FromImage(bitmap);
    hdcDestination = graphics.GetHdc();
           Rectangle dstRect = new Rectangle(0, 0, width, height);
   image.Draw(_graphicsHDC, ref dstRect, IntPtr.Zero);
}
catch{}
}

使用上面的源代码行,我可以加载图像,但绘制图像的工作失败了,抛出了一个内存异常:( 此外,我还尝试了同样的方法,创建了一个win32移动应用程序,在这个应用程序中,我可以自动加载并使用以下行绘制所需的图像。

void DrawImage(HDC *hdc, char *FileName, int width, int height)
{
IImagingFactory *pImgFactory = NULL;
IImage *pImage = NULL;
RECT rc = { 0, 0, width, height};

WCHAR Name[MAX_PATH] ={0}; 
mbstowcs (Name, FileName, strlen (FileName));
CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (SUCCEEDED(CoCreateInstance (CLSID_ImagingFactory,
                                NULL,
                                CLSCTX_INPROC_SERVER,
                                IID_IImagingFactory,
                                (void **)&pImgFactory)))
{
    // Load the image from the JPG file.
    if (SUCCEEDED(pImgFactory->CreateImageFromFile(Name, &pImage)))
    {
        pImage->Draw(*hdc, &rc, NULL);
        pImage->Release();
    }

    pImgFactory->Release();
}
CoUninitialize();}

我甚至尝试创建一个win32 dll并从c app调用它,但我做不到。 有人能帮我解决这个问题吗?