How do I open a new instance of Visual Studio using EnvDTE?
I am using COM EnvDTE objects to automate Visual Studio. I'm still going through the documentation, however, I suppose I would pose the question here to see if anyone knows how to do this.
So the problem is that when I get the DTE object and see which solution is open, I need to open another instance of Visual Studio if that's not what I expect. I don't necessarily want to load another solution on top of an existing VS instance.
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So I figured it out myself. It turns out RunningObjectTable is the way to iterate through all VS instances and find one with an open solution that I expect. If I don't find an instance that I can use, I call CoCreateInstance () to start the new VS IDE:
#define RETURN_ON_FAIL( expression ) \
result = ( expression ); \
if ( FAILED( result ) ) \
return false; \
else // To prevent danging else condition
...
HRESULT result;
CLSID clsid;
CComPtr<IUnknown> punk;
CComPtr<EnvDTE::_DTE> dte;
RETURN_ON_FAIL( ::CLSIDFromProgID(L"VisualStudio.DTE", &clsid) );
...
// Search through the Running Object Table for an instance of Visual Studio
// to use that either has the correct solution already open or does not have
// any solution open.
CComPtr<IRunningObjectTable> ROT;
RETURN_ON_FAIL( GetRunningObjectTable( 0, &ROT ) );
CComPtr<IBindCtx> bindCtx;
RETURN_ON_FAIL( CreateBindCtx( 0, &bindCtx ) );
CComPtr<IEnumMoniker> enumMoniker;
RETURN_ON_FAIL( ROT->EnumRunning( &enumMoniker ) );
CComPtr<IMoniker> dteMoniker;
RETURN_ON_FAIL( CreateClassMoniker( clsid, &dteMoniker ) );
CComBSTR bstrSolution( solutionPath );
CComPtr<IMoniker> moniker;
ULONG monikersFetched = 0;
while ( enumMoniker->Next( 1, &moniker, &monikersFetched ) == S_OK)
{
if ( moniker->IsEqual( dteMoniker ) )
{
result = ROT->GetObject( moniker, &punk );
if ( result == S_OK )
{
dte = punk;
if ( dte )
{
CComPtr<EnvDTE::_Solution> solution;
RETURN_ON_FAIL( dte->get_Solution( &solution ) );
VARIANT_BOOL isOpen = FALSE;
RETURN_ON_FAIL( solution->get_IsOpen( &isOpen ) );
if ( !isOpen )
{
RETURN_ON_FAIL( solution->Open( bstrSolution ) );
break;
}
else
{
CComBSTR fullName;
RETURN_ON_FAIL( solution->get_FullName( &fullName ) );
if ( fullName == bstrSolution )
break;
}
}
}
punk = NULL;
}
moniker = NULL;
}
if ( !dte )
{
RETURN_ON_FAIL( ::CoCreateInstance( clsid, NULL, CLSCTX_LOCAL_SERVER, EnvDTE::IID__DTE, (LPVOID*)&punk ) );
dte = punk;
if ( !dte )
return false;
if ( solutionPath )
{
CComPtr<EnvDTE::_Solution> solution;
RETURN_ON_FAIL( dte->get_Solution( &solution ) );
CComBSTR bstrSolution( solutionPath );
RETURN_ON_FAIL( solution->Open( bstrSolution ) );
}
}
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