don't make control dirty after a call to SetValue()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13191 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/textctrl.cpp

@@ -438,6 +438,10 @@ void wxTextCtrl::SetValue(const wxString& value)
 
         WriteText(value);
 
+        // mark the control as being not dirty - we changed its text, not the
+        // user
+        DiscardEdits();
+
         // for compatibility, don't move the cursor when doing SetValue()
         SetInsertionPoint(0);
     }