5-02-2011

Short Description: Qt4 Port: Set Optimization Solver Parameters; Q3ListView
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 6.1

See Screenshots:
  http://cadswes2.colorado.edu/~philw/2011/Qt4Port/April/OptParamSubDlg/

----------------------------
QtRun/QtOptParamSubDlg.hpp
QtRun/QtOptParamSubDlg.cpp
QtRun/OptParamSubWidgets.ui
----------------------------

OLD: Q3ListView*  _ui._paramListView
NEW: QTreeWidget* _ui._paramTreeWidget

OLD: class QtOptParamSubDlg::ParamListItem : public Q3ListViewItem
NEW: class QtOptParamSubDlg::ParamTreeItem : public QTreeWidgetItem

Also ported to Qt4 (minor):
  Q3GroupBox* _ui._valueGroupBox
  Q3TextEdit* _ui._descriptionTextEdit

New Qt slots (signal handlers):
  void paramTreeWidget_itemSelectionChanged();
  void paramTreeWidget_itemExpanded (QTreeWidgetItem*);
  void paramTreeWidget_itemCollapsed (QTreeWidgetItem*);

New Item class methods:
  bool hasUnappliedChange() const;
  void updateItem();

--------------------
Q3GUI/RwQt4Utils.cpp
--------------------

Fix to method: int RwQt4Utils::betterWidthHint (const QTreeWidget*, ..)

  For some reason, the vertical scrollbar is width is being computed (by Qt)
  as 100 pixels.  It's unclear when this stopped working.  That has now 
  been replaced with a hard-coded constant:

    // This was measured on both Solaris and Windows using Qt 4.6.3.
    static const int vertScrollWidth (15);

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