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The MapReader component provides programmatic access to the contents of a map document.
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
| Interfaces | Description | 
|---|---|
| IMapReader | Provides access to members that support reading a map document. | 
| ISupportErrorInfo (esriSystem) |