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Par2: Edit in place: Conditionally enable/disable column
2007-06-25 -- Bjarne Havnen
 
Override the GetEdit method

Dennis Evans adds:

  you can use the the getEdit method and return false on the selected 
columns when updating, or

  add each control to the column specific options, give each control a label 
that is easy to remember, this will generate an instance of the EditClass 
for each column.

  in the initControls method before the parent call

  if (self.req = changeRecord)
    loop x = 1 to records(self.eq)
      get(self.eq, x)
      if (self.eq.field = 'a column to disable')
         self.eq.control &= null
      else
        self.eq.control &= class generated  ! use the class labels created 
when adding the column specific options
      end
      put(self.eq)
 end



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