>>Hello,
>>
>>A couple of times I received email error message pointing to the fact that
>>'ShellExecute.prg' does not exist.
>>
>>In my code I do have calls to execute the ShellExecute (Windows API function) when printing PDF documents.
>>So, the ShellExecute is outside of what my program created.
>>
>>What would cause this error?
>>
>>TIA
>
>The command
>

>  DECLARE INTEGER ShellExecute IN "Shell32.dll" ;
>   INTEGER HWND, ;
>   STRING lpVerb, ;
>   STRING lpFile, ;
>   STRING lpParameters, ;
>   STRING lpDirectory, ;
>   LONG nShowCmd
>

>is not executed before
>

>ShellExecute( ....
>

>
>or CLEAR DLLS is executed between
>
>Possibly a third party tool clears the DLL, so it is good practice to have the DLL call like
>
>

>ShellExecute( ....
>
>FUNCTION  ShellExecute (tHWND, tlpVerb, tlpFile, tlpParameters, tlpDirectory, tnShowCmd)
>
> DECLARE INTEGER ShellExecute IN "Shell32.dll" ;
>    INTEGER HWND, ;
>    STRING lpVerb, ;
>    STRING lpFile, ;
>    STRING lpParameters, ;
>    STRING lpDirectory, ;
>    LONG nShowCmd
>
> RETURN  ShellExecute (tHWND, tlpVerb, tlpFile, tlpParameters, tlpDirectory, tnShowCmd )
>Endfunc
>

>
>Due to the way VFP calls functions, the FUNCTION is called only if the DLL is not declared. So if cleared, it's auto declared again.
>
>HTH
>Lutz

A follow up question. If I change my code to the one you suggest, are you saying that the call to
DECLARE INTEGER, inside the FUNCTION ShellExecute() will not produce anything, if it is called the second time? How would I see it in the Debugger?