How to use our Dll as like API Library

In Visual Basic,

We can use API function
by following manner.

Private declare GetCursorPps Lib “User32.dll”(…)

Similarly , I have Created A.dll

How to call a method of A.dll with out
giving the reference in “project References”
like API.

I have tried this by following manner.

Private declare method Lib “A.dll” (…)

But it raises the following error.

‘Entry Point not found ‘ when i am trying to
call the method of A.dll

Is it possible to do like this ? ifyes how ?