Gnats 5202: Unable to uncheck convergence Checking box in Run Parameter
Source code analysis, Phil Weinstein, 4-18-2013.
(Bug filed: 5-24-2012; RiverWare 6.2). 

------------------------
QtRun/SimParamWidgets.ui
------------------------

 <widget class="QCheckBox" name="_supplyConvCheckBox">
  <property name="text">
   <string>No Supply Slot Convergence Checking</string>
  </property>
 </widget>

-----------------------
QtRun/QtSimParamDlg.cpp
-----------------------

  // *********************************************
  // *** Checkbox Visibility and Value Setting ***
  // *********************************************

  In private method: void QtSimParamDlg::updateIter (bool disabled) ...
  
  // the accounting max iteration and supply convergence are only
  // visible for accounting.

  RunType runType(_ri->getType());
  if (runType == RT_ACCOUNTING ||
      runType == RT_SIM_ACCOUNTING ||
      runType == RT_RULE_ACCOUNTING)
  {
     ...
     _ui._supplyConvSeparator->show();
     _ui._supplyConvCheckBox->show();

     // TODO: get rid fo this _ui._supplyConvCheckBox, as it's now obsolete
     _ui._supplyConvCheckBox->setChecked(true);
  }

  // ********************************
  // *** Checkbox Toggle Handling ***
  // ********************************

  connect (_ui._supplyConvCheckBox, SIGNAL (toggled (bool)),
           SLOT (supplyConvHandler (bool)));

  // private slot, virtual
  void QtSimParamDlg::supplyConvHandler(bool on)
  {
      on; // (avoid compilation warning)

      // TODO: get rid of  this supplyConvHandler, as the
      // functionality is now obsolete.
  #if 0
      AccountMgrObj->setSupplyConvergenceType(
          on ? NOCONVERGE : PERCENTCHANGE,
          on ? 0.0 : DEFAULTCONVERGENCE);
  #endif
  }

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