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Getlasterror - gives the error code of the last failing windows api call system unit

function GetLastError : Integer; Description The GetLastError function returns the value of the last failed Windows API call. It is useful for many SysUtils routines, such as illustrated in the example. Related commands IOResult Holds the return code of the last I/O operation Example code : Try to delete a non-existant file and report the error code begin if DeleteFile('CanDeletMe.txt') then ShowMessage('File deleted OK') else ShowMessage('File not deleted, error code = '+ IntToStr(GetLastError)); end; Show full unit code File not deleted, error code = 2