MsiGetUserInfoA

function MsiGetUserInfoA(

  szProduct: LPCSTR;

  lpUserNameBuf: LPSTR;

  var pcchUserNameBuf: DWORD;

  lpOrgNameBuf: LPSTR;

  var pcchOrgNameBuf: DWORD;

  lpSerialBuf: LPSTR;

  var pcchSerialBuf: DWORD

):USERINFOSTATE;