Aim Use Delphi to realize a MapInfo-integrated application and a MapInfo event callback server. Methods After introducing the OLE/COM supporting feature of Delphi
the paper described the methods and steps of interactively integrating MapInfo with Delphi built applications. Result An interactively integrated MapInfo application was successfully developed by Delphi. Conclusion With the strong support to OLE/COM offered by Delphi
a GIS application based on MapInfo can be more easily to be realized.