Using a DLL with different procedure types

I have a question and not quite sure what the best way to do this would be. I have a DLL (32-bit) that uses GPIB to pass arguments and send low level commands. Now I want to use the same DLL  to pass different procedure types using the 'DefineProc'.  My question is do I always have to load the dll into memory as it shows in the help examples every time I define a different procedure? If not, what is the best way to do this? 

 

Examples :

 

function MoveATS1Graph(Wsname, Row, Col)

{ 

  var TabName = DLL["New"]("LPSTR", 100);

  

  TabName.Text = Wsname;

  

  //Define DLL  

  DLLFile = DLL["DefineDLL"]("ATS1GraphTool"); 

     

  DLLFile["DefineProc"]("MoveGraph", vt_lpstr, 

                                     vt_int,

                                     vt_int,

                                     vt_void);

                                        

  //Load The DLL Into Memory

  Lib = DLL["Load"](ATS1DLLLocation);

  Delay(500);

    

  //Call Happens here 

  Lib["MoveGraph"](TabName, Row, Col);

    

}

 

function SelectActiveWindow(WBname)

{

  var Workbook = DLL["New"]("LPSTR", 100);

  

  Workbook.Text = WBname;

  

  //Define DLL  

  DLLFile = DLL["DefineDLL"]("ATS1GraphTool"); 

     

  DLLFile["DefineProc"]("SelectActiveWindow", vt_lpstr, vt_void);

                                        

  //Load The DLL Into Memory

  Lib = DLL["Load"](ATS1DLLLocation);

  Delay(500);

    

  //Call Happens here 

  Lib["SelectActiveWindow"](Workbook);

    

}







I guess my question really is how do I go about combining these two functions that only load the DLL once, but pass the different procedures types?