code: public void printDisplayControl(PrintWriter out, String strFieldDesc, String strFieldName, String strFieldType)
      {
          if (this.getScreenField().getConverter() != null)
          {
              this.printInputControl(out, strFieldDesc, strFieldName, null, null, null, "button", strFieldType);   // Button that does nothing?
          }
          else if (this.getScreenField().getParentScreen() instanceof GridScreen)
          { // These are command buttons such as "Form" or "Detail"
              this.printInputControl(out, null, strFieldName, null, null, null, "button", strFieldType);   // Button that does nothing?
          }
      }
docs: Get the current string value in HTML.
  @exception DBException File exception.