MFC生成GUID

static char buf[64] = {0};GUID guid;if (S_OK == ::CoCreateGuid(&guid)){_snprintf(buf, sizeof(buf), "%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]);}