Re: Need to update polyline points after moving/dragging the polyline


"Walter Wang [MSFT]" <wawang@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:UaRp%23sSRHHA.2356@xxxxxxxxxxxxxxxxxxxxxxxxx
Hi moondaddy,

A Point's position is relative to its container, in this case, the
container is the Polyline. When you drag and move the Polyline on the
Canvas, the Polyline's position is also relative to the Canvas and it's
only the Polyline's position get changed, the Points in the Polyline is
not
changed.

You can verify this behavior by using following simple XAML and modify the
Canvas.Left/Top and observe the behavior:


<Canvas Name="myCanvas">
<Polyline Name="myPolyline" Canvas.Left="50" Canvas.Top="50"
Stroke="Blue" StrokeThickness="2">
<Polyline.Points>
<Point X="0" Y="0"></Point>
<Point X="100" Y="100"></Point>
</Polyline.Points>
</Polyline>

#The Layout System
http://msdn2.microsoft.com/en-us/library/ms745058.aspx#LayoutSystem_Measure_
Arrange

Sincerely,
Walter Wang (wawang@xxxxxxxxxxxxxxxxxxxx, remove 'online.')
Microsoft Online Community Support

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