Re: CImage read and write to memory files

On 18 Aug., 11:35, phil oakleaf <n...@oakleafsoftware.co.uk> wrote:


Here a sample for loading an image from resource, that might be
helpful:

BOOL LoadFromResource(HINSTANCE hInstance, LPCTSTR szResourceName,
LPCTSTR szResourceType, CImage& img)
{
  HRSRC hResource = ::FindResource(hInstance, szResourceName,
szResourceType);
  if (!hResource)
    return FALSE;

  DWORD imageSize = ::SizeofResource(hInstance, hResource);
  if (!imageSize)
    return FALSE;

  const void* pResourceData = ::LockResource(::LoadResource(hInstance,
hResource));
  if (!pResourceData)
    return FALSE;

  HGLOBAL hBuffer = ::GlobalAlloc(GMEM_MOVEABLE, imageSize);
  if (hBuffer)
  {
    HRESULT hr = E_FAIL;
    void* pBuffer = ::GlobalLock(hBuffer);
    if (pBuffer)
    {
      ::CopyMemory(pBuffer, pResourceData, imageSize);

      IStream* pStream = NULL;
      if (::CreateStreamOnHGlobal(hBuffer, FALSE, &pStream) == S_OK)
      {
        hr = img.Load(pStream);
        pStream->Release();
      }
      ::GlobalUnlock(hBuffer);
    }
    ::GlobalFree(hBuffer);
    hBuffer = NULL;
    return (hr == S_OK);
  }
  return FALSE;
}