private static IFilter LoadFilterFromDll(string dllName, string filterPersistClass)
{
//Get a classFactory for our classID
IClassFactory classFactory = ComHelper.GetClassFactory(dllName, filterPersistClass);
if (classFactory == null)
{
return(null);
}
//And create an IFilter instance using that class factory
Guid IFilterGUID = new Guid("89BCB740-6119-101A-BCB7-00DD010655AF");
Object obj;
classFactory.CreateInstance(null, ref IFilterGUID, out obj);
return(obj as IFilter);
}
private static IFilter LoadFilterFromDll(string dllName, string filterPersistClass)
{
//Get a classFactory for our classID
IClassFactory classFactory = ComHelper.GetClassFactory(dllName, filterPersistClass);
if (classFactory == null)
{
return(null);
}
//And create an IFilter instance using that class factory
// http://msdn2.microsoft.com/en-us/library/aa965717.aspx
// The first identifies all filters' persistent handler, IID_IFilter, which is {89BCB740-6119-101A-BCB7-00DD010655AF}. This CLSID is constant for all filters that implement IFilter.
Guid IFilterGUID = new Guid("89BCB740-6119-101A-BCB7-00DD010655AF");
Object obj;
classFactory.CreateInstance(null, ref IFilterGUID, out obj);
return(obj as IFilter);
}
private static FilterWrapper LoadFilterFromDll(string dllName, string filterPersistClass)
{
//Get a classFactory for our classID
ClassFactoryWrapper classFactory = ComHelper.GetClassFactory(dllName, filterPersistClass);
if (classFactory == null)
{
return(null);
}
object obj;
//And create an IFilter instance using that class factory
Guid filterGuid = new Guid("89BCB740-6119-101A-BCB7-00DD010655AF");
classFactory.ClassFactory.CreateInstance(null, ref filterGuid, out obj);
if (obj as IFilter == null)
{
using (classFactory)
return(null);
}
return(new FilterWrapper(classFactory, obj as IFilter));
}
public void Dispose()
{
ComHelper.FreeLibrary(m_Handle);
}
