Echelon OpenLDV - Manual (Page 138)

130 Extending xDriver
Figure 32. Visual Studio Object Browser View
Your class must implement the DownlinkLookup, UpdateLookup, and
UplinkLookup members of the ILdvxLookup interface. You can optionally
also implement the SetIntance and SetOptions members of the
ILdvxConfigure interface.
You can now begin coding your lookup extension component. See Appendix C,
Custom Lookup Extension Component Programming, on page 161, for more
information about custom lookup extension component programming. This
appendix contains descriptions of the methods that you can use to program your
custom lookup extension component.
Build and Register the Lookup Extension
Select Build → Build SampleLookupVB to build the SampleLookupVB part of
the solution.
Note: For Windows operating systems that include User Account Control
(Windows Vista or Windows 7), if you do not run Visual Studio with elevated
permissions (for example, as an Administrator), you will likely see the following
error message during registration:
Project : error PRJ0050: Failed to register output. Please
try enabling Per-user Redirection or register the component
from a command prompt with elevated permissions.
Start an elevated command shell (right-click the Visual Studio 2008 Command
Prompt shortcut and select Run as administrator), change to the folder that
contains your built DLL, and run the following command:
REGSVR32 SampleLookup.dll
Create a Custom xDriver Profile
Use the OpenLDV xDriver Profile Editor to create a custom xDriver profile for
your custom xDriver lookup extension.
1. Select Start → Echelon OpenLDV 4.0 SDK → Developer Utilities →
xDriver Profile Editor to open the OpenLDV xDriver Profile Editor.