Is there a way to launch fileless editor manually?

I can launch my custom editor by double click a file with my custom editor supported file extension. However, How can I launch the editor filelessly?

I tried to use OpenSpecificEditor(). However, I always get a null pointer of winFrame. The only problem I can see is I didn't pass in IvsUIHierarchy handle to the call. Do I have to pass in IvsUIHierarchy handle? if so, how can I get IvsUIHierarchy handle?

Any help?