OpenDoc6 from C++

I am working on an external C++ module to load SolidWorks with a
specified Drawing, and then perform operations on it. A VB versoin
seems to work ok, but from C++ (.net version 7.1.3088), I don't get
valid returns from the OpenDoc6 call.

The symptoms I see are that SolidWorks starts (appears in Task
Manager), grows somewhat in memory usage when the OpenDoc6 call is
made, but then exits after a few moments. The OpenDoc6 call returns
hres of S_OK, zero values in the error or warning values, and a null
value for the IModelDoc2 return pointer.

Code snippet is as follows:

CoInitialize(NULL);
CComPtr<ISldWorks> swApp;
CComPtr<IModelDoc2> swModel;
HRESULT hres = swApp.CoCreateInstance(__uuidof(SldWorks), NULL,
CLSCTX_LOCAL_SERVER);
if (hres != S_OK)
{ cout << "Error starting a SolidWorks session. Exiting..." << endl;
swApp = NULL; //release COM references
CoUninitialize();
return 1;
}
long qErrs = 0;
long qWarn = 0;
hres = swApp->OpenDoc6( L"C:\\tmp.SolidWorks\\Tutor1.SLDDRW",
swDocDRAWING,
swOpenDocOptions_Silent |
swOpenDocOptions_ReadOnly,
L"",
&qErrs,
&qWarn,
&swModel );
...

If I substitute get_IActiveDoc2 for OpenDoc6, and use an existing
instance of SolidWorks, the sample code seems to work ok.

Anybody else been successful in using OpenDoc6 from an external C++
app?

 

all I can say is that it works from within an add-in.

stupid (friday) questions :

1) are you sure the file exists ? (there is no FileDoesntExist
error/warning...)

2) did you try without the Silent option ?

 

2) Yes, I'm sure the file exists, the strangest part is that both the
warning and error variables are left with a zero value, and the hres
return value is S_OK. But SolidWorks then exits<sigh>.

I'll try without the silent option.

 

SolidWorks support supplied the answer to this, you can't pass literal
strings in this api. Needed to have set up the test call as follows:

CComBSTR bsFile(_T("C:\\tmp.SolidWorks\\Tutor1.SLDDRW")) ;
CComBSTR bsConfig (_T("")) ;
hres = swApp->OpenDoc6( bsFile,
swDocDRAWING,
swOpenDocOptions_Silent
| swOpenDocOptions_ReadOnly,
bsConfig,
&qErrs,
&qWarn,
&swModel );

Works fine now...

 

ouch! how much time lost on such a stupid / incoherent problem ?
Move to a real OO standard clean API wrapper : www.cadoo.com ;-)