isCOBOL Evolve : User Interface : Controls Reference : COMBO-BOX : Properties : Trunc-Value
Trunc-Value
When inquired, this property tells if the value of the Combo-Box is fully visible or if it was truncated by the Combo-Box width. The property value will be 0 if the content is fully visible or 1 if the content was truncated.
 
Example - Check if the combo-box value is fully visible
working-storage section.
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77 tc pic 9.
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procedure division.
...
  inquire screen-1-co-1 trunc-value tc.
  if tc = 1
    display "combo box value not fully visible" upon sysout.