GoDigram for .NET Framework and .NET Core
Northwoods.Go Namespace / GoToolZooming Class
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    GoToolZooming Class
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    This tool handles a user's drag in the background to draw a rubber-band box to specify a new document position and scale for a view.
    public class GoToolZooming : GoToolRubberBanding, IGoTool  
    The ZoomedView value is the GoView that is manipulated by this tool. The rubber-band box that the user can draw is constrained to have the same aspect ratio as the ZoomedView's GoView.DisplayRectangle.
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