AddFlow is an ActiveX control that lets you quickly build flowchart-enabled applications. Features such as distinct colors, fonts, shapes, styles, pictures, text, and so on for each object of the diagram (node or link) are available. Nodes stay connected when moved. Metafiles support, serialization, multi-level undo/redo, printing, zooming, Bezier and spline curves, reflexive links, link jumps, multiselection, scrolling, user data association, navigation in the graph. Runtime distribution is royalty free. AddFlow allows to build graph:
either interactively (you can create a full diagram without any programmation)
either programmaticaly (because it offers a set of OLE automation objects, properties and methods allowing for instance to create a node at a given position)

AddFlow is an ActiveX control. It has been written with Visual C++ 6.0 and it is a MFC (Microsoft Foundation Class) based ActiveX control.
An AddFlow diagram is a set of objects that can be linked each other. The objects are called nodes and the lines that connect objects are called links. AddFlow provides two ways to build diagrams:

interactive way (with the mouse): see the Quick Start of the help file in order to know how to interactively draw a diagram.
programmatic way with the AddFlow API.
Following is a list of the main AddFlow features. Note that all those features are encapsulated in a small, robust, fast and easy to use ActiveX control.

General

Runtime-royalty free
Digitally signed
Interactive and programmatic drawings
Navigation (You can access every nodes and links of a diagram with just 5 properties).
Collections support (nodes, links, selected nodes, selected links)
Customization: many properties allowing to customize the control (CanDrawNode, CanMoveNode, ReadOnly, etc...)