[gme-users] Help with paradigm registration

[Krishnakumar B]

Hi,

I am trying to make an installer for our toolsuite. As part of finishing up
the installation, I would like to register the paradigm with GME. I saw
some example code in InstallScript which looked something like:

try
   set oGME = CreateObject("Mga.MgaRegistrar");
catch
   SendErrorMsg(hInstall, "Can't create Mga.MgaRegistrar
                object. Please check if you have a valid GME installaton.
                \n" + Err.Description, 1); 
endcatch; 
// System-wide register
nParadigmRegMode = REGACCESS_SYSTEM;
nBuffer = 256;

// Register the UML paradigm

svParadigmDir = INSTALLDIR ^ "etc";
nParadigmRegMode = REGACCESS_USER;
svParadigmName = "UML.xmp";

// User registeration
SendMsgToProgressBar(hInstall, svParadigmName);
try
                oGME.RegisterParadigmFromData("XML=" + svParadigmDir ^
svParadigmName, svParadigmRegName, nParadigmRegMode);
catch
                SendErrorMsg(hInstall, "Can't register Paradigm
                "+svParadigmDir ^ svParadigmName +". Please check if you
have a valid GME installaton. \n" + Err.Description, 1);
endcatch;

I am trying to write a C++ equivalent of the above (with the hope of making
an executable someday which can be installed as a custom action in the MSI
that I am creating). I need some information/help about the internal
functions of GME. If you see the above snippet, it creates a COM object and
calls RegisterParadigmFromData(). So can someone please help me with the
small bit of magic needed to do the same with C++?

I tried the following but it wouldn't compile (obvious since I don't know
COM). Also where can I get information about the API supported by
Mga.MgaRegistrar inteface?

Any help is very much appreciated.

Thanks,
kitty.



UINT __stdcall RegisterParadigm (MSIHANDLE hInstall)
{
  // installable paradigm number
  int nParadigmNum = 0;

  // Initialize progress bar
  InitProgressBar(hInstall, nParadigmNum, PARADIGMCOST,
                  "Paradigm Install",
                  "Registering Paradigms into GME.", "Registering [1]");

  // Try to get the GME COM object
  CObject* GME = CreateObject("Mga.MgaRegistrar");
  if (GME == NULL)
    SendErrorMsg (hInstall, "Can't create Mga.MgaRegistrar object. Please check"
                  "if you have a valid GME installaton. \n" + LastError(), 1);
  const int nBuffer = 256;

  char* value = GetRegistryValue (HKEY_LOCAL_MACHINE,
                                  "SOFTWARE\\ISIS\\CoSMIC",
                                  "TargetDir");
  if (value == 0)
    SendErrorMsg (hInstall, "Unable to access Registry Key TargetDir", 1);

  CString targetDir (value);

  // Register the PICML paradigm

  CString svParadigmDir = targetDir + "paradigms";

  // User-wide register
  int nParadigmRegMode = REGACCESS_USER;
  CString svParadigmName = "PICML.xmp";

  // User registeration
  SendMsgToProgressBar(hInstall, svParadigmName);
  try
    {
      GME->RegisterParadigmFromData("XML=" + svParadigmDir + svParadigmName,
                                    svParadigmRegName, nParadigmRegMode);
    }
  catch (...)
    {
      SendErrorMsg (hInstall, "Unable to register Paradigm " + svParadigmDir +
                   svParadigmName + ". Please check if you have a valid GME"
                   "installation. \n" + LastError(), 1);
    }

  // System Wide registration
  nParadigmRegMode = REGACCESS_SYSTEM;
  SendMsgToProgressBar(hInstall, svParadigmName);
  try
    {
      GME->RegisterParadigmFromData("XML=" + svParadigmDir + svParadigmName,
                                    svParadigmRegName, nParadigmRegMode);
    }
  catch (...)
    {
      SendErrorMsg (hInstall, "Unable to register Paradigm " + svParadigmDir +
                   svParadigmName + ". Please check if you have a valid GME"
                   "installation. \n" + LastError(), 1);
    }
  return ERROR_SUCCESS;
}