Load MDL app on Application Startup (MS_INITAPPS)

Hi Rajesh,

Rajesh Varatharajan said:

I have modified code as below

Did you use some example as template?

I am aware of the only example of MS_INITAPPS specifically for CE (maybe more exist), and it uses mdlDialog_cmdNumberQueue (false, CMD_DIALOG_OPENFILE,"STARTUP",TRUE);

Rajesh Varatharajan said:

Application gets crashed.

Did you try to debug MicroStation during the whole process?

Another option, that often help, is to use e.g. WinDbg and to analyze exception log and memory dump. Sometimes it's necessary to configure MicroStation to create memory dump with more details.

Even when from your information it seems MicroStation crashes, not your code, information in the dump may help to analyze why.

Does the problem persist when workspace (not No workspace) is used?

With regards,

  Jan

P.S. Instead of polluting the post by many duplicated tags, I recommend to follow the best practices and to use standardized subject format to share mandatory information (product + version + language). Now it's not clear what MicroStation version do you use. Plus, please use Insert > Insert code tool when you want to share any code snippet. It's annoying to read code formatted as plain text.

Rajesh Varatharajan said:

if (strcmp(l_str_argument.c_str(), "MS_INITAPPS") == 0)

Most C++ strings in MicroStation CONNECT are Unicode (WChar, a typedef of wchar_t).  Bentley WString is an good string container, based on std::string.

A better test would be...

extern "C" DLLEXPORT  void MdlMain
(
int             argc,
WCharCP         argv[]
)
{
MdlApplicationClass appClass {mdlSystem_getMdlAppClass (nullptr)};
switch (appClass)
{
    case MdlApplicationClass::User:
    {
        StartedByUser (argc, argv);
        break;
    }
    case MdlApplicationClass::InitApp:
    {
        StartedAsInitApp (argc, argv);
        break;
    }
    case MdlApplicationClass::DGNApp:
    {
        StartedAsDgnApp (argc, argv);
        break;
    }
    default:
    {
        //    Ignore other startup modes
        WString    msg;
        msg.Sprintf (L"MdlApplicationClass %d not handled", (int)appClass);
        ...
        break;
    }
}
}

Thanks Jon for your reply.
I tried this same behavior observed

Rajesh Varatharajan said:

When I select any file displayed

Try mdlSystem_enterGraphicsExtended(0) instead of mdlSystem_enterGraphics().

Tried with that too.

same behavior.
Is there anything I need to change in this?

 mdlInput_sendCommand(CMD_DIALOG_OPENFILE, L"STARTUP", MSInputQueuePos::INPUTQ_HEAD, NULL, 0);  

Rajesh Varatharajan said:

same behavior

1. Does the exception log inform you of anything?
2. What is L"STARTUP"?

Log not captured at that location.
"STARTUP" i have taken from initapp sample application.

Rajesh Varatharajan said:

initapp sample application

Please supply more detail.  I don't see an INITAPP sample in the CONNECT SDK.

7484.initapp.zip
It was referred by MicroStation Support Team. 

please also compare with example from ..\ Documentation\Migration\Workshop\Labs\MigrationTesting\v0811\initapp\initapp.cpp

Rajesh Varatharajan said:

It was referred by MicroStation Support Team

That's an old example from the days of MicroStation V8. 

Rajesh Varatharajan said:

..\ Documentation\Migration\Workshop\Labs\MigrationTesting\v0811\initapp

That's a better example.  If you build that example, does it work for you?

I notice that example's function MdlMain() uses 8-bit C strings, which is obsolete.  MdlMain for CONNECT looks like this:

extern "C" DLLEXPORT  void MdlMain (int argc, WCharCP argv[])