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PROGRAM( ) Function

  • Articolo

Returns the name of the program currently executing, the current program level, or the name of the program executing when an error occurred.

PROGRAM([nLevel])

Return Values

Character or Numeric

Parameters

  • nLevel
    Specifies how many program levels back the program name is to be found. This parameter can range from 0 to the program nesting depth. A program can execute another program, which can execute another program, and so on. Programs may be nested to 128 levels.

    If you specify 0 or 1 for nLevel, PROGRAM( ) returns the name of the master program (the highest-level program). If nLevel exceeds the program nesting depth, PROGRAM( ) returns an empty string.

    If you specify –1 for nLevel, PROGRAM( ) returns as a numeric value the current program level. PROGRAM(–1) always returns zero when issued from the Command window.

Remarks

PROGRAM( ) helps your program recover from errors. It is similar to SYS(16).

If used without an argument, PROGRAM( ) returns the name of the currently executing program.

Example

ON ERROR DO errhand WITH PROGRAM( )

** The next line should generate an error ** USE nodatabase ON ERROR && Returns to system default error-handling routine PROCEDURE errhand PARAMETERS gcProgram WAIT 'An error occurred in the program ' + gcProgram WINDOW

See Also

DO | LINENO( ) | MESSAGE( ) | SYS(16) – Executing Program File Name | ASTACKINFO( )