UUID和GUID生成_唯一标识符

; 创建一个新的UUID（通用唯一标识符）。
MsgBox % CreateUUID()  ; ==>  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx


; 创建GUID（全局唯一标识符），一个用于CLSID和接口标识符的128位唯一整数。
MsgBox % CreateGUID()  ; ==> {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}


CreateUUID() {
  VarSetCapacity(UUID, 16, 0)
  if (DllCall("rpcrt4.dll\UuidCreate", "ptr", &UUID) != 0)
    throw Exception("UuidCreate", -1)
  if (DllCall("rpcrt4.dll\UuidToString", "ptr", &UUID, "uint*", suuid) != 0)
    throw Exception("UuidToString", -1)
  return StrGet(suuid), DllCall("rpcrt4.dll\RpcStringFree", "uint*", suuid)
}

CreateGUID() {
  VarSetCapacity(pguid, 16, 0)
  if (DllCall("ole32.dll\CoCreateGuid", "ptr", &pguid) != 0)
    throw Exception("CoCreateGuid", -1)
  size := VarSetCapacity(sguid, 38 * (A_IsUnicode ? 2 : 1) + 1, 0)
  if !(DllCall("ole32.dll\StringFromGUID2", "ptr", &pguid, "ptr", &sguid, "int", size))
    throw Exception("StringFromGUID2", -1)
  return StrGet(&sguid)
}