I'm calling a method whitin my .exe managed code:
MSgate.initObjects()
then,
intObjects() calls a function inside an unmanaged dll function which i import through:
[
DllImport(dllPath, EntryPoint = "initObjects", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)] public static extern void initObjects();In the unmanaged code, inside that function there is a call to ::CoCreateIstance which fails returning me E_NOINTERFACE error:
::CoCreateInstance (CLSID_MLWriter,NULL,CLSCTX_INPROC_SERVER,IID_IMLWriter,(void**)&g_IMLWriter)I don't undestand why, the dll exposing COM is correctly registered and when i try to use it from a .exe unmanaged code the CoCreateInstance works. Instead if i try to call it from a dll imported in a .exe managed code through MSgate.initObjects(), then CoCreateIstance fails with E_NOINTERFACE.
Summry
.exe unmanaged -> call to CoCreateIstance (works)
the same code called from a managed exe:
.exe managed -> call initobjects inside unmanaged dll -> which calls CoCreateIstance (fails with E_NOINTERFACE)
.NET EXE--->Dll---->::CoCreateIstance Fails
Vadivel
Danca
- The CLR calls CoInitializeEx() and looks at whether or not you specified the [STAThread] attribute on your .NET program's entry point.
- Your ActiveX component uses reg-free COM.