VII.1.1.2 Using component with ruby

The file “COM/EX99_LANGS/testClaCom.rb” contains the Ruby code for automating CLA calculations. This program is very similar to the Python program:

• At the beginning of the program, several standard packages must be loaded:

                    require ’Win32API’
                    require ’win32ole’
                 
  

  “Win32API” is needed to create message box windows, and “win32ole” is needed for OLE automation.

• The program defines the same three methods as the Python program in section VII.1.1.1: “id2str”, “printLamProperties” and “printLoadResponse”. These methods are nearly identical to their counterparts in the Python version.

• In the main program, the COM component is accessed and the ClaDb database created as follows:

                    frpApp = WIN32OLE.new("FeResPost_3_4_0.Application")
                    db=frpApp.newObject("ClaDb")
                    db.readNeutral("test.ndf")
                 
  

  (Here again, you may need to change the FeResPost version number to match the version installed on your computer.) The loop over laminate and load IDs is written as follows:

                    db.iter_laminateId.each do |lamId|
                       printLamProperties(db,os,lamId)
                       db.iter_loadId.each do |loadId|
                          printLoadResponse(db,os,lamId,loadId,0.0,criteria)
                       end
                    end
                 
  

Note that the window created at the end of the program may indicate that some references to COM objects have not been released. This is a known issue in Ruby’s “win32ole” extension, not in the FeResPost COM component.