我在C++和C#代碼之間有一個可用的CLI接口。該代碼有一個C++抽象接口,如:通過在非默認AppDomain中調用C#函數調用C++指針接口
-------------C++ Interface---------------
namespace cppns
{
class cppInterface
{
public:
virtual bool Start(const char *pcDir) = 0;
};
}
------Implementation of abstract C++ interface in same dll---------
namespace cppns
{
class cppimp : public cppInterface
private:
gcroot<MyInternalCSharpClass^> mInternalClassAccess;
public:
cppimp::cppimp()
{
mInternalClassAccess = gcnew MyInternalCSharpClass();
}
virtual bool cppimp::Start(const char *pcDir)
{
System::AppDomain ^appDom = AppDomain::CurrentDomain::get();
System::String ^strDomainName = appDom->FriendlyName;
mInternalClassAccess->Initalize(pcDir);
}
}
---------Method to create an instance of the class in a factory--------------
cppns::cppInterface *GetImplObject()
{
return new cppns::cppimp();
}
----------Factory class .h to allow C++ to get an instance of the cppimp class------
------The C++ code knows about the abstract interface by including the header file--
------FactoryExport is __declspec(dllexport) when compiled in dll and---------------
----- __declspec(dllimport) when used as a header file in exe that uses header------
class FactoryExport ClassFactory
{
public:
static cppns::cppInterface *CreateImpl();
};
----------Factory class .cpp to allow C++ to get an instance of the cppimp class------
cppns::cppInterface *ClassFactory::CreateImpl()
{
return GetImplObject();
}
此代碼正確地讓我打電話給CreateImplInit在獲取包含Start方法的接口的實現。我的問題是,我試圖強制整個CLR/.NET加載並執行到不是默認AppDomain的AppDomain中。我可以使用下面的代碼創建一個輔助的AppDomain:
CComPtr<ICorRuntimeHost> pRuntimeHost;
//Retrieve a pointer to the ICorRuntimeHost interface
HRESULT hr = CorBindToRuntimeEx(
L"v2.0.50727", //Retrieve last version before 4.0.
// NULL, //Retrieve latest version by default
L"wks",
STARTUP_LOADER_OPTIMIZATION_SINGLE_DOMAIN | STARTUP_CONCURRENT_GC,
CLSID_CorRuntimeHost,
IID_ICorRuntimeHost,
(void**)&pRuntimeHost.p
);
hr = pRuntimeHost->Start();
DWORD dwAppDomainId = 22;
WCHAR domainName[80 + 1];
swprintf(domainName, 80, L"%s-%ld",L"NoDefaultDomain", dwAppDomainId);
CComPtr<IUnknown> pUnknownAppDomain;
hr = pRuntimeHost->CreateDomainEx(domainName, NULL, NULL, &pUnknownAppDomain);
CComPtr<_AppDomain> pAppDomain;
hr = pUnknownAppDomain->QueryInterface(__uuidof(_AppDomain), (VOID**)&pAppDomain.p);
BSTR bstrFriendlyName;
hr = pAppDomain->get_FriendlyName(&bstrFriendlyName);
if (SUCCEEDED(hr))
{
_bstr_t bstrFriendlyNameWrap(bstrFriendlyName, false);
}
_bstr_t bstrAssemblyName("InteropCode");
CComPtr<_Assembly> pAssembly;
hr = pAppDomain->Load_2(bstrAssemblyName, &pAssembly);
BSTR bstrFullName;
hr = pAssembly->get_FullName(&bstrFullName);
if (SUCCEEDED(hr))
{
_bstr_t bstrFullNameWrap(bstrFullName, false);
std::cout << "Assembly name is: " << bstrFullNameWrap << "\n";
}
讓工廠回到我cppns接口::本次應用程序域內cppInterface的每個嘗試已經失敗。我甚至嘗試創建一個C#類的二級工廠,該工廠返回指向已實現接口的指針,以便對程序集進行Invoke調用,希望可以使其餘的代碼在已加載Assembly的AppDomain中執行,但Invoke返回一個IDispatch指針,我似乎無法將其映射回我的界面上的任何類型的C++指針。
namespace cppns
{
public ref class NetFactory
{
public:
NetFactory()
{
}
cppInterface *CreateInterop()
{
return GetImplObject();;
}
};
}
是否有另一種方式來獲得一切的二級AppDomain中運行,或者是IDispatch指針可用在調用Start方法?