Re: Re: command line parsing

From: Craig Henderson (yg-boost-users_at_[hidden])
Date: 2003-04-17 17:37:17

"Ben Hutchings" <ben.hutchings_at_[hidden]> wrote in message
news:A7F746377BDB7D4EA8E6623AF92F43C80C7C5C_at_copper.bwsint.com...
> E. Scott Larsen wrote:
> > Just FYI to this thread in general.  It's been a while since I've
> messed
> > with WinMain and command lines, but if my memory serves me right (it
> was
> > at a different place, so I don't have the code here), there's some
> > additional whacky issues here.  WinMain recieves the first arguments
> > differently depending on how it is run:
> > *) from MSVC debugger
> > *) from a commandline
> > *) by clicking on an shortcut icon
> > *) by clicking in an explorer window
>
> I find this hard to believe, as WinMain is just given a pointer into the
> command line returned by GetCommandLine(), incremented past the program
> name and any following space.

I don't understand this either. Looking at the MFC code for
CWinApp::ParseCommandLine() in appcore.cpp, line 433, this uses __argc and
__targv and works in all the situations above. I'd conclude from that that
the command lines are consistent, wrt parameter placement, on a single
platform, and across Win32 platforms supported by the library (All desktop
Win32 OSs). I have seen differences, however, with the formation of the
module name - include/excluding the full path in short/long format. If long
format is used, then it can be/is enclosed in double quotes to cope with
spaces in paths, eg "Program Files".

>
> According to the docs, this ought to work:
>
>     wchar_t ** argv;
>     int argc;
>     argv = CommandLineToArgvW(GetCommandLineW(), &argc);
>
> but I've never tried it; maybe it doesn't.
>

According to my MSDN (MSVC 7.0), CommandLineToArgvW support varies between
platforms:
  Windows NT/2000/XP: Included in Windows NT 3.5 and later.
  Windows 95/98/Me: Unsupported.

I'd assume this is because it's unicode which is unsupported directly on 9x
platforms, but there is no ANSI version - CommandLineToArgvA().

-- Craig