BOOL CGifImage::LoadFromBuffer(const BYTE* lpBuf, DWORD dwSize)
{
if (NULL == lpBuf || dwSize <= 0)
return FALSE;
HGLOBAL hGlobal = ::GlobalAlloc(GHND, dwSize);
if (NULL == hGlobal)
return FALSE;
LPVOID lpBuffer = ::GlobalLock(hGlobal);
if (NULL == lpBuffer)
{
::GlobalFree(hGlobal);
return FALSE;
}
memcpy(lpBuffer, lpBuf, dwSize);
::GlobalUnlock(hGlobal);
LPSTREAM lpStream = NULL;
HRESULT hr = ::CreateStreamOnHGlobal(hGlobal, TRUE, &lpStream);
if (hr != S_OK)
{
::GlobalFree(hGlobal);
return FALSE;
}
BOOL bRet = LoadFromIStream(lpStream);
lpStream->Release();
return bRet;
}
BOOL CImageEx::LoadFromResource(HINSTANCE hInstance, LPCTSTR pszResourceName, LPCTSTR pszResType)
{
HRSRC hRsrc = ::FindResource(hInstance, pszResourceName, pszResType);
if (NULL == hRsrc)
return FALSE;
DWORD dwSize = ::SizeofResource(hInstance, hRsrc);
if (0 == dwSize)
return FALSE;
HGLOBAL hGlobal = ::LoadResource(hInstance, hRsrc);
if (NULL == hGlobal)
return FALSE;
LPVOID pBuffer = ::LockResource(hGlobal);
if (NULL == pBuffer)
{
::FreeResource(hGlobal);
return FALSE;
}
HGLOBAL hGlobal2 = ::GlobalAlloc(GHND, dwSize);
if (NULL == hGlobal2)
{
::FreeResource(hGlobal);
return FALSE;
}
LPVOID pBuffer2 = ::GlobalLock(hGlobal2);
if (NULL == pBuffer2)
{
::GlobalFree(hGlobal2);
::FreeResource(hGlobal);
return FALSE;
}
memcpy(pBuffer2, pBuffer, dwSize);
::GlobalUnlock(hGlobal2);
LPSTREAM pStream = NULL;
HRESULT hr = ::CreateStreamOnHGlobal(hGlobal2, TRUE, &pStream);
if (hr != S_OK)
{
::GlobalFree(hGlobal2);
::FreeResource(hGlobal);
return FALSE;
}
BOOL bRet = LoadFromIStream(pStream);
if (pStream)
pStream->Release();
::FreeResource(hGlobal);
return bRet;
}