use new style creation (MSWCreateControl() and MSWGetStyle()); adjust the drop down list height after appending/inserting/deleting items

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25578 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/choice.h

@@ -101,9 +101,24 @@ protected:
                            int width, int height,
                            int sizeFlags = wxSIZE_AUTO);
 
+    virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
+
     // get the real height of the control
     int GetVisibleHeight() const;
 
+    // update the height of the drop down list to fit the number of items we
+    // have (without changing the visible height)
+    void UpdateVisibleHeight();
+
+    // create and initialize the control
+    bool CreateAndInit(wxWindow *parent, wxWindowID id,
+                       const wxPoint& pos,
+                       const wxSize& size,
+                       int n, const wxString choices[],
+                       long style,
+                       const wxValidator& validator,
+                       const wxString& name);
+
     // free all memory we have (used by Clear() and dtor)
     void Free();