🚀 go-pugleaf

In article <19920813.054753.507@almaden.ibm.com> fattire@vnet.ibm.com (BJ Hargrave) writes:
>In <13AUG199208152210@lims01.lerc.nasa.gov> Andy Brush @Sverdrup writes:
>>I'm trying to DosExecPgm a program that requires command-line switches.
>>The docs say that these args are placed in a "pointer to zero-terminated
>>string*s*", and passed to the function.
>
>PSZ buff = "C:\\OS2\\CMD.EXE\0/C Echo Hello!";
>
>rc = DosExecPgm ( NULL,                 /* Object name buffer         */
>                  0,                    /* len of object name buffer  */
>                  EXEC_SYNC,            /* execute synchronously      */
>                  buff,                 /* arguments                  */
>                  NULL,                 /* environment                */
>                  (PRESULTCODES)&exec_rc,       /* return codes       */
>                  buff );               /* program to execute         */
>
>Notice the \0 after the program name. The last argument to DosExecPgm
>uses the first SZ from buff for the program name and 4th argument to
>DosExecPgm uses the first SZ as argv<0> and the second SZ as the
>arguments to the program!

Unless I'm confused [common occurance :-)], that should really be

    PSZ buff = "C:\\OS2\\CMD.EXE\0/C Echo Hello!\0";

[note the extra \0 at the end of the string]

I.e. the arguments are laid out contiguously in memory separated by '\0'.
Two '\0' characters are used to mark the end of the argument list.

Corrections?
-- 
Colin Jensen (cjensen@ampex.com)