Get Visual Studio Designer's (Cider) zoom level -

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i developing smart tag 1 of wpf controls. smart tag added through adornerprovider in design dlls of control. want synchronize zoom level of smart tag , visual studio designer, because if zoom in/out visual studio designer, smart tag remains unchanged. got idea?

private designerview designer { { return designerview.fromcontext(this.context); } }

    protected override void activate(modelitem item)     {         this.adornedcontrolmodel = item;         designer.zoomlevelchanged += new eventhandler(designer_zoomlevelchanged);         //         // code         //         base.activate(item);     }      void designer_zoomlevelchanged(object sender, eventargs e)     {         throw new notimplementedexception();     }

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