Q64353

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page	Q64353: With the "deflang" Switch PWB Prompts for Setting Program List	/pubs/pc/reference/microsoft/kb/Q64353/

Q64353: With the "deflang" Switch PWB Prompts for Setting Program List

Article: Q64353
Version(s): 1.00   | 1.00
Operating System: MS-DOS | OS/2
Flags: ENDUSER | docerr
Last Modified: 3-AUG-1990

As documented on Page 79 of the "Microsoft C Reference" shipped with C
version 6.00 and in the online help, the "deflang" switch in the
Programmer's WorkBench (PWB) sets the default filename extension for
list boxes in PWB dialog boxes. Another (undocumented) feature of this
switch is to enable you to be prompted to "Set Program List?" when
loading a source file with a .MAK file associated with it in the
current directory.

By default, "deflang" is not set. You can set the deflang switch in
the [PWB] tagged section of the TOOLS.INI file, for example:

   deflang:C

This changes the default filename extension in the PWB's dialog boxes
(such as Open in the File menu) from "*.*" to "*.c", so that only
files with the .c extension show up by default. Other languages can be
specified as well, as shown below:

   Switch Setting     Extension
   --------------     ---------

   no value            .*
   C                   .c
   Asm                 .asm
   BASIC               .bas
   FORTRAN             .for
   Pascal              .pas
   COBOL               .cbl
   LISP                .lsp

Note that the online documentation specifies "Assembler" as the switch
to use for .ASM files, but this is incorrect. "Asm" is the correct
switch to use to make Assembler the default language.

The deflang switch also enables you to be prompted as to whether or
not the program list should be set automatically. If you load a file
that has the extension specified by the "deflang" switch and you also
have a .MAK file with the same base filename in the same directory,
the PWB will prompt you about loading the program list.

For example, assume that deflang is set to C and FOO.MAK and FOO.C are
in the same directory. If you type PWB FOO.C at the command-prompt,
the PWB will pause when loading and prompt with "Set Program List?
FOO.MAK". At this point you can specify <yes> or <no>.

When already in the PWB, if you select Open from the File menu, and
select FOO.C as the file to open, the PWB will also prompt you at this
point regarding whether or not you want FOO.MAK loaded as the program
list, but only if NO program list is currently set.