deprecated GetCheckBoxSize(wxWindow *) in favour of GetCheckBoxSize() const (the window parameter was unused and not documented)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59246 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/renderer.cpp

@@ -121,7 +121,7 @@ public:
 
     virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0);
 
-    virtual wxSize GetCheckBoxSize(wxWindow *win);
+    virtual wxSize GetCheckBoxSize() const;
 
     virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
 };
@@ -428,7 +428,7 @@ wxRendererGTK::DrawComboBoxDropButton(wxWindow *win,
 }
 
 wxSize
-wxRendererGTK::GetCheckBoxSize(wxWindow *WXUNUSED(win))
+wxRendererGTK::GetCheckBoxSize() const
 {
     gint indicator_size, indicator_spacing;
     gtk_widget_style_get(wxGTKPrivate::GetCheckButtonWidget(),