Implemented DoGetBestSize for wxListBox, (native) wxComboBox and

wxTextCtrl, and used it when wxSize(-1, -1) is passed to Create, to set
the initial size.
  Added wxDoChangeFont and wxXmStringToString helper functions, removed
the use of m_stringList in native wxComboBox, removed some duplicated code
in wxWindow.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19296 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/motif/textctrl.h

@@ -133,7 +133,8 @@ public:
     
 protected:
     wxString  m_fileName;
-    
+
+    virtual wxSize DoGetBestSize() const;
 public:
     // Motif-specific
     void*     m_tempCallbackStruct;