[gme-users] GME Crash, custom decorator.

[Stefan Marte]

Hi! Thanks for the effort. 

I've just found whats wrong. the snippet is actually fine. the problem
was elsewhere. it seems that if you return from GetPortLocation with an
error code, GME crashes. Since at the moment I have just a stub in
there, this had me confused regarding the source of the problem.

again, thank you for your effort.

tourlou
Stefan

 --- Peter Volgyesi <peter.volgyesi at vanderbilt.edu> schrieb: 
> Your snippet looks good for me. Try to run GME (in the debugger) with
> the
> '-d' option. In this case GME will not try to catch exceptions, so
> the
> debugger will have a chance to find the correct location of the bug.
> You can also post your entire decorator project (zipped directory
> contents
> after build/clean).
> 
> --
> peter
> 
> > -----Original Message-----
> > From: gme-users-bounces at list.isis.vanderbilt.edu 
> > [mailto:gme-users-bounces at list.isis.vanderbilt.edu] On Behalf 
> > Of Stefan Marte
> > Sent: Monday, August 23, 2004 7:01 PM
> > To: gme-users at list.isis.vanderbilt.edu
> > Subject: [gme-users] GME Crash, custom decorator.
> > 
> > I am probably getting annoying, but I have one last problem 
> > in my decorator, which again stems from my inexperience with COM.
> > 
> > I am using the following code to create a new IMgaFCOs 
> > collection, and add all children of the model. this seems to 
> > work fine at first, but after returning to GME, a crash 
> > follows. What am I missing?
> > (The code is from the decorator kit, I added the try block 
> > and everything inside). I assume I mess up the smart pointers 
> > somewhere, but I don't get why. It works btw, when I remove 
> > the coll->Append(...) call.
> > 
> > --- code follows ---
> > 
> > 	CComPtr<IMgaFCOs> coll;
> > 	COMTHROW(coll.CoCreateInstance(OLESTR("Mga.MgaFCOs")));
> >         try {
> > 		CComQIPtr<IMgaModel> model(self->FCO());
> > 		CComPtr<IMgaFCOs> children;
> > 		long iter;
> > 		long ccount;
> > 		int retval;
> > 
> > 		retval = model->get_ChildFCOs(&children);
> > 		retval = children->get_Count(&ccount);
> > 		for (iter = 1; iter <= ccount; iter++) {
> > 			CComPtr<IMgaFCO> child;
> > 			retval = children->get_Item(iter,&child);
> > 			retval = coll->Append(child);
> > 		};
> >         } catch (...){};
> > 	*portFCOs = coll.Detach();		
> > 
> > 
> > 	
> > 		
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