added wxTextCtrl::ChangeValue() which is the same as SetValue() but doesn't send the text changed event (first part of patch 1553551)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41739 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk1/textctrl.h

@@ -43,7 +43,9 @@ public:
     // ----------------------------------
 
     virtual wxString GetValue() const;
-    virtual void SetValue(const wxString& value);
+    virtual void SetValue(const wxString& value) { DoSetValue(value, SetValue_SendEvent); }
+
+    virtual void ChangeValue(const wxString &value) { DoSetValue(value); }
 
     virtual int GetLineLength(long lineNo) const;
     virtual wxString GetLineText(long lineNo) const;
@@ -182,6 +184,8 @@ protected:
     // override this and return true.
     virtual bool UseGTKStyleBase() const { return true; }
 
+    void DoSetValue(const wxString &value, int flags = 0);
+
 private:
     // change the font for everything in this control
     void ChangeFontGlobally();