1) When you select a shape, besides the rectangular bounding box, the outlines of the shape and sub-shapes change to red. Is there any way to prevent that from happening? We have a custom composite shape that has a lot of lines in it (kind of like a lined note card) and we don't want those lines highlighted when the shape is selected.

2) In general, is there any way to control how selected shapes are displayed? (e.g. if we wanted to use a different color than red).

Thanks.

Have you tried setting the color for SelectedTextFillStyle property of the Drawing View.

Take a look at the following help documentation topic: Diagram for .NET > User's Guide > WinForm Components > Drawing Views (Interactive Appearance)

Best Regards,
Nevron Support Team