我如何使用EnvDTE打开一个新的Visual Studio实例？ [英] How do I open a new visual studio instance using EnvDTE?

问题描述

我使用EnvDTE COM对象自动化的Visual Studio。我还是通过文档看，但是，我想我会在这里掉落的问题，看看是否有人已经知道如何做到这一点。

I'm using the EnvDTE COM objects to automate Visual Studio. I'm still looking through the documentation, however, I figured I'd drop the question here to see if someone already knows how to do this.

那么，问题是，当我获得DTE对象，看看有什么解决办法是开放的，我需要的，如果解决的办法是不是我很期待打开Visual Studio中的另一个实例。我并不希望加载在VS的现有实例另一种解决方案。

So, the problem is that when I get the DTE object and look at what Solution is open, I need to open another instance of Visual Studio if the solution is not the one I'm expecting. I don't necessarily want to load another solution over an existing instance of VS.

推荐答案

所以，我想通了这一点对我自己。原来，该RunningObjectTable是遍历所有VS情况下，寻找一个具有开放式的解决方案，我期待的方式。如果我没有发现我可以用一个实例，然后我调用CoCreateInstance（）合作推出一个新的VS IDE：

So, I figured this out on my own. It turns out that the RunningObjectTable is the way to iterate over all VS instances and look for one with the solution open that I am expecting. If I don't find an instance that I can use, then I call CoCreateInstance() to launch a 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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