Add GetScrollHelper() to wxWindow.

Let wxScrollHelper set the underlying field itself.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41205 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/window.h

@@ -65,6 +65,7 @@ class WXDLLEXPORT wxSizer;
 class WXDLLEXPORT wxToolTip;
 class WXDLLEXPORT wxWindowBase;
 class WXDLLEXPORT wxWindow;
+class WXDLLEXPORT wxScrollHelper;
 
 #if wxUSE_ACCESSIBILITY
 class WXDLLEXPORT wxAccessible;
@@ -343,6 +344,9 @@ public:
             *h = s.y;
     }
 
+    void SetScrollHelper( wxScrollHelper *sh )   { m_scrollHelper = sh; }
+    wxScrollHelper *GetScrollHelper()            { return m_scrollHelper; }
+
         // reset the cached best size value so it will be recalculated the
         // next time it is needed.
     void InvalidateBestSize();
@@ -1242,6 +1246,8 @@ protected:
     // Virtual size (scrolling)
     wxSize                m_virtualSize;
 
+    wxScrollHelper       *m_scrollHelper;
+
     int                   m_minVirtualWidth;    // VirtualSizeHints
     int                   m_minVirtualHeight;
     int                   m_maxVirtualWidth;

src/common/wincmn.cpp

@@ -200,6 +200,8 @@ wxWindowBase::wxWindowBase()
 
     m_virtualSize = wxDefaultSize;
 
+    m_scrollHelper = (wxScrollHelper *) NULL;
+
     m_minVirtualWidth =
     m_maxVirtualWidth = wxDefaultCoord;
     m_minVirtualHeight =

src/generic/scrlwing.cpp

@@ -311,6 +311,8 @@ wxScrollHelper::wxScrollHelper(wxWindow *win)
     m_handler = NULL;
 
     m_win = win;
+    
+    m_win->SetScrollHelper( this );
 
     // by default, the associated window is also the target window
     DoSetTargetWindow(win);