wxSplitterWindow::ReplaceWindow() function added and documented

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1666 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/splitter.h

@@ -94,6 +94,10 @@ public:
     // Doesn't actually delete the window.
     bool Unsplit(wxWindow *toRemove = (wxWindow *) NULL);
 
+    // Replaces one of the windows with another one (neither old nor new
+    // parameter should be NULL)
+    bool ReplaceWindow(wxWindow *winOld, wxWindow *winNew);
+
     // Is the window split?
     bool IsSplit() const { return (m_windowTwo != NULL); }