What happens when I load my dll this way… ?

[d00ape]

What does my code do?

#import "MyDll.dll"
….
CoInitialize(NULL);

if(SUCCEEDED(m_IPtr.CreateInstance("MyDll.Stuff")) ) // Create intstance to component?
{
//is ok
}
else
{
//is not ok
}

 

[Cagliostro]

no problems if your dll is an ActiveX dll and is registered. This is a standard way for working with COM objects.

Ion Filipski

 

[d00ape]

Thanks, good to hear.

Whats the difference between CreateInstance(...) and LoadLibrary(...) ?

 

[Cagliostro]

CreateInstance may result in a load of some .exe or some .dll. It deppends on type of COM object, local or inproc. After that it query the interface IClassFactory, call CreateInstance of it and return to you usually a pointer to IDispatch or to IUnknown. You can not call directly functions from dll loaded with CreateInstance. You may only invoke methods through COM calls. However I think COM dll could expose functions in the same way as a regular dll but there is no reason to do it.

Ion Filipski