KB10617 - Access and display ECW data from a ECWP server.
Regarding DK products, access the file as usual. So use GIS.Open or just provide the path to the constructed TGIS_LayerECW object.
Regarding the Editor or free Viewer products, create a TTKP file using a text editor and enter:
[TatukGIS Layer1]
Path=ecwp://server_name/file_name.ecw
Created: April 02, 2005, Modified: September 10, 2015