no changes, just refactor the code sending spin update event to SendSpinUpdate() instead of duplicating it; also initialize m_oldValue

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/spinctrl.h

@@ -99,14 +99,22 @@ protected:
     // the handler for wxSpinButton events
     void OnSpinChange(wxSpinEvent& event);
 
-    // Handle processing of special keys
+    // handle processing of special keys
     void OnChar(wxKeyEvent& event);
     void OnSetFocus(wxFocusEvent& event);
     void OnKillFocus(wxFocusEvent& event);
 
-    int m_oldValue;
+    // generate spin control update event with the given value
+    void SendSpinUpdate(int value);
+
+    // called to ensure that the value is in the correct range
     virtual void NormalizeValue();
-   
+
+
+    // the value of the control before the latest change (which might not have
+    // changed anything in fact -- this is why we need this field)
+    int m_oldValue;
+
     // the data for the "buddy" text ctrl
     WXHWND     m_hwndBuddy;
     WXFARPROC  m_wndProcBuddy;