Hello,
I have the following COM definition, which supposedly takes in a vector of strings.
************** IDL *************************
[id(1), helpstring("method myMethod")]
HRESULT myMethod( [in] VARIANT* bFlags, [out,retval] VARIANT* result);
************** IDL *************************
I Have an example using C++ where the method is called
***************** C++ *******************
- void
-
initComVariantArray( const std::vector<std::string>& inputFlags,
-
CComVariant& rOutputFlags )
-
throw ( _com_error )
-
{
-
rOutputFlags.ChangeType( VT_VARIANT );
-
-
CComSafeArray<VARIANT> inputArray( (ULONG) 0 );
-
for ( unsigned int i = 0; i < inputFlags.size(); ++i )
-
{
-
CComVariant comPacsKey;
-
CComBSTR tmpString( inputFlags[i].c_str() );
-
-
// The operator= will set automatically the type to VT_BSTR
-
comPacsKey = tmpString;
-
-
HRESULT hr = inputArray.Add( comPacsKey );
-
if ( FAILED( hr ) )
-
{
-
throw _com_error( hr );
-
}
-
}
-
-
// The operator= will add automatically the type VT_ARRAY to the vt
-
rOutputFlags = inputArray;
-
}
-
- Main():
-
{
-
CComVariant vFlags;
-
vector<string> vecFlags(); vecFlags.push_back( "flag1" );
-
initComVariantArray( vecFlags, vFlags );
-
CComVariant vResult = pInteface->myMethod( (&vFlags );
-
}
-
***************** C++ *******************
This works great with C++, but i can't get the interface to work in C#. when i import the interface into C#, i get the following definition:
*************** C# ************************
-
myMethod( ref object );
-
-
and calling the method as:
-
string [] flags = { "flag1" };
-
object objFlag = ( object ) flags;
-
myMethod( ref objFlag );
Does not work. I get the exception:
System.Runtime.InteropServices.SEHException: External component has thrown an exception.
*************** C# ************************
If you guys know what im doing wrong here, it would be a lot of help.
Thanks in advance.
