Exemplos de IPicture::SaveAsFile em C++ (Cpp)

Exemplo n.º 1

Arquivo: ImageUtilEx.cpp Projeto: joshuadugie/KeePass-1.x

std::vector<BYTE> NewGUI_SaveIcon(HICON hIcon)
{
	std::vector<BYTE> v;
	if(hIcon == NULL) { ASSERT(FALSE); return v; }

	IStream* pStream = NULL;
	if(FAILED(CreateStreamOnHGlobal(NULL, TRUE, &pStream))) { ASSERT(FALSE); return v; }
	if(pStream == NULL) { ASSERT(FALSE); return v; }

	PICTDESC pd;
	ZeroMemory(&pd, sizeof(PICTDESC));
	pd.cbSizeofstruct = sizeof(PICTDESC);
	pd.picType = PICTYPE_ICON;
	pd.icon.hicon = hIcon;

	IPicture* pPic = NULL;
	LONG lSize = 0;
	bool bPic = SUCCEEDED(OleCreatePictureIndirect(&pd, IID_IPicture,
		FALSE, (LPVOID *)&pPic));
	bPic &= (pPic != NULL);
	if(bPic)
	{
		if(SUCCEEDED(pPic->SaveAsFile(pStream, TRUE, &lSize)))
		{
			LARGE_INTEGER liMove;
			ZeroMemory(&liMove, sizeof(LARGE_INTEGER));
			VERIFY(SUCCEEDED(pStream->Seek(liMove, STREAM_SEEK_SET, NULL)));

			v.resize(static_cast<size_t>(lSize));

			ULONG cbRead = 0;
			VERIFY(SUCCEEDED(pStream->Read(&v[0], static_cast<ULONG>(
				lSize), &cbRead)));
			if(cbRead == static_cast<ULONG>(lSize)) { } // Success
			else { ASSERT(FALSE); v.clear(); }
		}

		pPic->Release();
	}

	pStream->Release();
	return v;
}