extracted OnSize() body in a new DoLayout() method so that it can be called from wxFrame::SetXXXBar()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29579 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/toplevel.h

@@ -194,7 +194,7 @@ public:
 
     // event handlers
     void OnCloseWindow(wxCloseEvent& event);
-    void OnSize(wxSizeEvent& event);
+    void OnSize(wxSizeEvent& WXUNUSED(event)) { DoLayout(); }
 
     // this should go away, but for now it's called from docview.cpp,
     // so should be there for all platforms
@@ -221,6 +221,10 @@ protected:
     // send the iconize event, return true if processed
     bool SendIconizeEvent(bool iconized = true);
 
+    // do TLW-specific layout: we resize our unique child to fill the entire
+    // client area
+    void DoLayout();
+
     // Get the default size for the new window if no explicit size given. If
     // there are better default sizes then these can be changed, just as long
     // as they are not too small for TLWs (and not larger than screen).

src/common/toplvcmn.cpp

@@ -187,7 +187,7 @@ void wxTopLevelWindowBase::DoClientToScreen(int *x, int *y) const
 
 // default resizing behaviour - if only ONE subwindow, resize to fill the
 // whole client area
-void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event))
+void wxTopLevelWindowBase::DoLayout()
 {
     // if we're using constraints or sizers - do use them
     if ( GetAutoLayout() )