>Hi there,
>I developed an application in which I call the function
>

>Procedure CallExt
>Parameters xfiletoOpen,xlocation
>
>DECLARE INTEGER ShellExecute IN SHELL32.DLL INTEGER nWinHandle,;
>                                               STRING cOperation,;
>                                               STRING cFileName,;
>                                               STRING cParameters,;
>                                               STRING cDirectory,;
>                                               INTEGER nShowWindow
>    result = ShellExecute(0, 'Edit', xFileToOpen , '', xLocation, 1)
>

>
>This works fine in Win XP but under a PC running with Win2000 it does not open the file as it was not, but it is, associated to any application.
>
>How can I get through this problem ?
>Thank you all
>Alessio


Check the result. If it is bigger than 32 than everything is OK, but if it is smaller or equal to 32 error happened.
Error codes:

#define ERROR_OUT_OF_MEMORY      0 &&The operating system is out of memory or resources. 
#define ERROR_FILE_NOT_FOUND     2 &&The specified file was not found. 
#define ERROR_PATH_NOT_FOUND     3 &&The specified path was not found. 
#define ERROR_BAD_FORMAT        11 &&The .exe file is invalid (non-Microsoft Win32 .exe or error in .exe image). 
#define SE_ERR_ACCESSDENIED      5 && access denied
#define SE_ERR_ASSOCINCOMPLETE  27 &&The file name association is incomplete or invalid. 
#define SE_ERR_DDEBUSY          30 &&The Dynamic Data Exchange (DDE) transaction could not be completed because other DDE         
                                   &&transactions were being processed. 
#define SE_ERR_DDEFAIL          29 &&The DDE transaction failed. 
#define SE_ERR_DDETIMEOUT       28 &&The DDE transaction could not be completed because the request timed out. 
#define SE_ERR_NOASSOC          31 &&There is no application associated with the given file name extension.
                                   &&This error will also be returned if you attempt to print a file that is not printable. 
#define SE_ERR_SHARE            26 &&A sharing violation occurred. 

#define SE_ERR_OOM               8 && out of memory
#define SE_ERR_DLLNOTFOUND      32 &&The specified dynamic-link library (DLL) was not found.