Patch from Alberto Griggio to use the wxRenderer for drawing the

header and buttons, plus some tweaks from me to calculate the height
of the header based on font size.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29506 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/contrib/gizmos/wxCode/include/wx/treelistctrl.h

@@ -145,7 +145,9 @@ class GIZMODLLEXPORT wxTreeListCtrl : public wxControl
 public:
     // creation
     // --------
-    wxTreeListCtrl() {}
+    wxTreeListCtrl()
+        : m_header_win(0), m_main_win(0), m_headerHeight(0)
+    {}
 
     wxTreeListCtrl(wxWindow *parent, wxWindowID id = -1,
                const wxPoint& pos = wxDefaultPosition,
@@ -153,7 +155,7 @@ public:
                long style = wxTR_DEFAULT_STYLE,
                const wxValidator &validator = wxDefaultValidator,
                const wxString& name = wxTreeListCtrlNameStr )
-        : m_header_win(0), m_main_win(0)
+        : m_header_win(0), m_main_win(0), m_headerHeight(0)
     {
         Create(parent, id, pos, size, style, validator, name);
     }
@@ -542,10 +544,12 @@ protected:
 //     void Init();
 
     void OnSize(wxSizeEvent& event);
-
+    void CalculateAndSetHeaderHeight();
+    
 
 private:
     size_t fill_column;
+    size_t m_headerHeight;
 
     DECLARE_EVENT_TABLE()
     DECLARE_DYNAMIC_CLASS(wxTreeListCtrl)