I have already covered the Visio event model in one of the previous posts. Unfortunately, not every event can be handled in that easy way. For instance, the double-click event requires a totally different approach.

In order to handle the double-click on a shape you have to use ShapeSheet More...

Often, you want to either to read or put some additional information regarding shapes in your diagram. For instance, you have an application for drawing a layout of your office. Obviously, every piece of equipment or furniture your have has some information, such as its name, code and any other information related to facility management. There are two ways of reading/writing such kind of information. The first one is to make use of Visio custom properties, while the second one is to store that kind of information in a database. The former is relatively simple, as it doesn’t require to have any additional layer, such as database. At the same time, the latter is more versatile, as it allows integrating Visio application with other business application by querying a database. In the tutorial we cover the first option, that is using custom properties of Visio. More...

In the previous chapters we have already seen an important Visio event, DocumentOpened, which is triggered each time you open a new diagram. However, the Visio API supports tons of other events and some of them are necessary for building sophisticated applications around Visio. Provided you have an application with an embedded Visio control and users can use the application to modify diagrams. Obviously, you want to keep track of such changes and, say, record them in a database. Visio events allows you to receive notifications every time such a change occurs. More...

This is the second part of the Developing for Visio series. Today, we’ll speak about how to analyse programmatically parent-child relationships in Visio diagrams. Often, especially in block diagrams there are boxes that contain other boxes.

However, during iterating through shapes in a Visio diagram such a relationship is not preserved.More...

This tutorial demonstrates how to extend the Visio functionality by writing an Visio add-in with VSTO, creating a standalone application with both Windows Forms and WPF, and finally by building a browse application with WPF (XBAP). More...