hwISession RegisterExternalReader
Registers the given external reader.
Syntax
hwISession_handle RegisterExternalReader filename, type, ext, category
Application
Tcl Query
Inputs
- filename
 - The name of the reader to be registered.
 - type (Optional)
 - The type of the reader to be registered. This string, if specified, appears in the drop-down combo box of the File dialog.
 - ext (Optional)
 - If specified, this is the extension actually used as a filter if the specified type is chosen in the File dialog.
 - category (Optional)
 - The category of the reader to be registered. Options include “asc” (ASCII), “bin” (binary), or left unspecified for a generic category (which is the default).
 
Example
hwi GetSessionHandle mySessionName
mySessionName RegisterExternalReader myReader "New External Reader (*.new)"  *.NEW asc  
      Error
Success (0) or an error code.