Echelon OpenLDV - Manual (Page 127)

OpenLDV Programmer’s Guide 119
From the ATL Simple Object Wizard, select the Options page, as shown in
Figure 23.
Figure 23. Visual Studio ATL Simple Object Wizard – Options Page
For optimal performance, select Free as the threading model. This model
requires that your extension be multithread safe, and allows your component to
directly access other xDriver extension components.
Click Finish to close the ATL Simple Object Wizard and create the object.
Implement the ILdvxLookup Interface
From the Visual Studio main window, open the class view window (View →
Class View). From the class view, right-click CSampleLookupCsv and select
Add → Implement Interface to open the Implement Interface wizard, as
shown in Figure 24 on page 120.