VC++生成GUID

生成string格式的：

char* GenerateGuid()
	{
		
		 char* guidBuf;
		guidBuf = (char *)malloc(64);
		GUID guid;
		CoInitialize(NULL);
		if (S_OK == CoCreateGuid(&guid))
		{
			_snprintf(guidBuf, 64, "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
				guid.Data1, guid.Data2, guid.Data3,
				guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
				guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
		}
		CoUninitialize();
		return guidBuf;
	}

生成wstring格式的：

wstring GenerateGuid()
	{
		wchar_t *guidStr = NULL;

		GUID *pguid = new GUID;

		CoCreateGuid(pguid);

		// Convert the GUID to a string
		UuidToString(pguid, (RPC_WSTR*)&guidStr);
		delete pguid;
		return wstring(guidStr);
	}

如果出現鏈接錯誤，請將Rpcrt4.lib鏈接庫加入到鏈接器輸入中去。