Error Handling Routines
These API routines allow you to determine the cause of an error and the error type.
_Error( ) API Library Routine
Signals the error specified by the value in code to the Visual FoxPro runtime._ErrorInfo( ) API Library Routine
Returns the external error number that reflects the internal error number specified by code._UserError( ) API Library Routine
Reports an error with the null-terminated text specified in the message.