I need to add limited drawing functionality to a VFP application. Specifically, the program will display a grid in a window with a palette of custom icons. Users will drag an icon from the palette and drop it on the grid. There will also be different connectors which users may choose and drag from one icon to another, leaving a line between the two icons. So basically the users are building a graph (in the mathematical sense) with nodes and connections. I also need the ability to display labels next to the nodes and connectors, to print the drawing, save it in the VFP database, recall it and edit it. Certain calculations depend on which icons are on the graph and how they are connected.

There are lots of applications that work like this visually. (E.g. Database design tool in Visual Server .NET) Is there a class library, ActiveX control or other tool for doing this in VFP? Or is there an application that VFP could control via automation that would serve? (I expect I'll have to port this to .NET at a later date.)

Thanks for your suggestions.