Microsoft Visio 2013 Business Process Diagramming and Validation

Enhancing the ThisAddin class

The ThisAddin_Startup() event is a good place to test for the correct Visio version and edition, along with checking that the Visio application events are indeed enabled; otherwise this add-in will not work properly anyway.

 private void ThisAddIn_Startup(object sender, System.EventArgs e) { try { veApplication.VisioApplication = this.Application; /* check prereq's */ // check for Visio >= 2013 and Edition = PRO if (!this.IsVisio15ProfessionalInstalled) { MessageBox.Show( "This add-in requires the Professional edition of Visio", "Visio Professional edition required", MessageBoxButton.OK, MessageBoxImage.Exclamation ); return; } // events must be enabled // -1 is TRUE, 0 is FALSE, typically anything other than 0 is ...