ERROR

See also

Return the error code, program name, function name, or line number of the last error.

WebVue support - Yes.

Mode	Mnemonic	Syntax
1	ERRNO	1
2	PROGRAM	2
3	FUNCTION	2
4	LINE	1
5	TOFILE	3

Syntax 1

IntVal = ERROR(Mode);

Return type: INTEGER.

Execution

Mode	Mnemonic	Action
1	ERRNO	Return the last error code that occurred.
		Return: 0 = No error. 1 = Incorrect string argument. 2 = The value is below the lower limit. 3 = The value is above the higher limit. 5 = The file is already open (FOPEN). 6 = The file is already closed (FCLOSE, FSEEK, FPUTS). 7 = The file failed to open (FOPEN).
4	LINE	Return the line number where the error last occurred.

Syntax 2

IntVal = ERROR(Mode);

Return type: STR.

Execution

Mode	Mnemonic	Action
2	PROGRAM	Return the name of the program where the error last occurred.
3	FUNCTION	Return the name of the function where the error last occurred.

Syntax 3

IntVal = ERROR(Mode, Filename);

Return type: INTEGER.

Execution

Mode	Mnemonic	Action
5	TOFILE	Redirects all the errors, which are displayed in the debug window to the specified filename. To disable redirection enter "" for the filename. If executed in a WebVue session context this instruction is processed by the computer that hosts the web back end and the file is created on that computer.
		Return: The name of the program where the error last occurred.

Example

SUB Main()

DIM intResult as integer;

'open the file

intResult = Error("TOFILE","errorfile.txt");

If (FOPEN("MESSAGE.TXT","R")==0) Then

  'If error in opening:

  PRINT ("code=\t",ERROR("ERRNO"));

  PRINT ("prog=\t",ERROR("PROGRAM"));

  PRINT ("fonc=\t",ERROR("FUNCTION"));

  PRINT ("line=\t",ERROR("LINE"));

Else

  'If no error in opening MESSAGE.TXT:

  '...

End If

END SUB