don't mistake a simple click on a column for a reordering drag

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57344 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/headerctrlg.h

@@ -127,7 +127,11 @@ private:
     // same functions as above but for column moving/reordering instead of
     // resizing
     void StartReordering(unsigned int col, int xPhysical);
-    void EndReordering(int xPhysical);
+
+    // returns true if we did drag the column somewhere else or false if we
+    // didn't really move it -- in this case we consider that no reordering
+    // took place and that a normal column click event should be generated
+    bool EndReordering(int xPhysical);
 
     // constrain the given position to be larger than the start position of the
     // given column plus its minimal width and return the effective width