Q61262: argv

Article: Q61262
Product(s): See article
Version(s): 6.00   | 6.00
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 11-JUL-1990

If you use argv[0] in a program you have written, you may notice that
the string pointed to by argv[0] is different depending upon what
operating system/environment you are under. To access the full path
name of the program, use the global variable _pgmptr, which always
points to the full path, regardless of the environment you are in.
(For more information, query on the word _pgmptr.)

Under MS-DOS versions 3.x and later, argv[0] points to a string that
contains the complete path of the program being run. Under MS-DOS
versions 2.x, argv[0] contains the program name only. Under OS/2,
argv[0] generally points to a string that reflects exactly what was
entered to execute the program. The following are some exceptions to
the OS/2 rule:

1. OS/2 EXE linked with /PM:PM --

      argv[0] points to complete path of program.

2. OS/2 EXE under CodeView --

      argv[0] points to complete path of program.

These variations are not attributable to the C version 6.00 run-time
functions; they merely reflect what is passed to the program at run
time by the operating system.

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