Is it possible to handle error caused in an UNDO-handler (alternatively check if routine exists)

Markus Näslund

I am calling a routine from an UNDO-handler(with late binding) that may or may not exist. My problem is that if it does not exist, it "destroys" the UNDO chain. I have tried handling the error but it does not work.

If there is a possibility to check if a routine exist before actually calling it that would solve my problem.

AWAS

Someting like that might help:

FUNC bool Call_Routine(string Input)

        %Input%;
        RETURN TRUE;      
    ERROR
        IF ERRNO=ERR_REFUNKPRC THEN
            SkipWarn;
            RETURN FALSE;
        ENDIF
    ENDFUNC

Basically you call the routine and return True if it suceeded and False if it didn't.

Don't think there is any Built-IN Routine to check that.

You can't handle an Error that occured in a Undo routine.

Markus Näslund

AWAS said:

Someting like that might help:

FUNC bool Call_Routine(string Input)

        %Input%;
        RETURN TRUE;      
    ERROR
        IF ERRNO=ERR_REFUNKPRC THEN
            SkipWarn;
            RETURN FALSE;
        ENDIF
    ENDFUNC

Basically you call the routine and return True if it suceeded and False if it didn't.

Don't think there is any Built-IN Routine to check that.

You can't handle an Error that occured in a Undo routine.

Thank you!
I can't believe I did not think of that!
I was so stuck in the fact that I can't handle an error that occured in an undo handler that it did not occur to me to try the late binding call in a function.

Thanks again, I was really stuck here.