The return values don't have anything to do with the success of BLAT!
Rather, they are the return values from the WinExec() function. That
means that they are the Windows Process IDs, and they only exist for the
length of time it takes for BLAT to run. The same type of thing happens
when you invoke any program using WinExec() or anything else.
If you want the return values from BLAT itself (and I'm not sure that
there are any), then you may have to write a wrapper as a .BAT file, and
check for ERRORLEVEL. That's the only way that DOS programs can return
their success to the calling program.
Back to the WinExec() function for a second. The returned value is only
the PID if it's above 32. If it's 32 or below, then WinExec() itself
failed, and the command wasn't run.
Sorry this wasn't more clear.
/Paul
> I have been playing with BLAT, but I am confused about the return
> values.
> Here is some sample code:
>
> DECLARE Integer WinExec IN Win32API ;
> String cDosCmd, Integer iCmdShow
>
> * Below is a command that sends E-mail successfully. It returns
> 23607.
>
> ? WinExec('blat readme.txt -s "Good message" -t
tacallah@iupui.edu -i
>
tacallah@iupui.edu', 0)
>
> * Below is a command that fails, because x.txt does not exist. It
> returns
> 23879.
>
> ? WinExec('blat x.txt -s "Bad message" -t
tacallah@iupui.edu -i
>
tacallah@iupui.edu', 0)
>
> When I do I first command ("Good message") again, it returns 23751.
> Doing
> the second command ("Bad Message") again gives me 23751. How can tell
> programmically when BLAT fails. All return data types are numeric?
