Hi Anna,
In Nevron Diagram for .NET you create interactivity attributes to describe tooltips, cursors, URL links, custom JScript (in case of ASP.NET environment) etc. To add a tooltip to a shape use this code:
NTooltipAttribute tooltip = new NTooltipAttribute("Some tooltip");
shape.InteractivityStyle.InteractivityAttributes.Add(tooltip);
Tooltips will work for WinForms, HTML image map ASP.NET response, SVG and other graphics devices.
Check out the following folder in the .NET Vision documentation:
Framework - Presentation Layer - Graphics - Interactivity Style
I hope this helps.
Best regards,
Ivo