NWCreate with .NET Plug-in

By Xiaodong Liang

If you have a dll of nwcreate which exports custom geometries (say mycreate.dll). It will work well if you call it from a standalone EXE (say C#). But when you want to call it from a .NET plug-in, it will crash at LiNwcApiInitialise.

Essentially, NWcreate has already been initialised in the process. The nwcreate.lib is intended for completely standalone applications, and not for use inside the Roamer process. The only sort of third-party code we support inside Roamer is that of third-party file loaders that use lcodpnwcreate.lib/dll. You could use this approach to do something similar. You could write a file loader, then from the .NET plugin ask to load a dummy file, which will invoke the file loader.

Or alternatively, use a separate EXE to create your NWC file, using the standalone nwcreate.lib, and invoke that EXE from your .NET plug-in, This will keep the two processes separate, and all should work fine.

You can also consider to use COM or .NET Remoting to implement this out of process approach: write the server in C++