I'm wondering how i can pass an empty String to a Unicode DLL. This is the DLL Declaration:

External_Function LlDefineLayoutEf "LlDefineLayoutW" LLDllName Integer hLLJob Handle hWnd WString wTitle Integer nObjType WString wObjName Returns Integer
When i call the Function with an empty ("") wObjName Parameter it is translated in a NULL Pointer, not into a pointer to an empty String which is sometimes needed.

How can i manage it to get a Pointer to an empty String?

Best Thanks