Re: dynamic runtime casting?

If the type to cast to is only known at runtime you can use:

return l_pType.IsInstanceOfType(l_pObject) ? l_pObject : nullptr;


Is there a C++ method comparable to the vb.net TryCast function? I
had hopes for Convert::ChangeType, but that didn't work.

For a scripting engine, the user is specifying to retrieve an
interface on an object by name. Code is roughly:

array<Type^> ^l_pInterfaces = l_pType->GetInterfaces();
for(int m=0; m < l_pInterfaces->Length; m++)
{
Type^ l_pInterface = l_pInterfaces[m];
System::String ^ l_pInterfaceName = l_pInterface->Name;
if (l_pPropString->Equals(l_pInterfaceName)
break;
l_pInterface = nullptr;
}
if (l_pInterface)
return intern(Convert::ChangeType(l_pObject,l_pInterface));

--
Vladimir Nesterovsky


.