Fixed bug: SetPropertyValueUnspecified(p) and p->SetValue(wxNullVariant) were out of sync

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58026 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/propgrid.h

@@ -1748,8 +1748,6 @@ protected:
                      const wxRect* clip_rect,
                      bool isBuffered ) const;
 
-    void DoSetPropertyValueUnspecified( wxPGProperty* p );
-
     /** Draws an expand/collapse (ie. +/-) button.
     */
     virtual void DrawExpanderButton( wxDC& dc, const wxRect& rect,

include/wx/propgrid/propgridiface.h

@@ -1030,7 +1030,12 @@ public:
         If it has children (it may be category), then the same thing is done to
         them.
     */
-    void SetPropertyValueUnspecified( wxPGPropArg id );
+    void SetPropertyValueUnspecified( wxPGPropArg id )
+    {
+        wxPG_PROP_ARG_CALL_PROLOG()
+        wxVariant nullVariant;
+        SetPropVal(p, nullVariant);
+    }
 
 #ifndef SWIG
     /** Sets various property values from a list of wxVariants. If property with

include/wx/propgrid/propgridpagestate.h

@@ -606,8 +606,6 @@ public:
     void DoSetPropertyValues( const wxVariantList& list,
                               wxPGProperty* default_category );
 
-    void DoSetPropertyValueUnspecified( wxPGProperty* p );
-
     void SetSplitterLeft( bool subProps = false );
 
     /** Set virtual width for this particular page. */