command line arguments

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pjd

Joined: 15 Jul 2007
Posts: 47

pjd 07 Aug 2007, 08:47

Does anyone know which api call is used for retrieving command line arguments?

07 Aug 2007, 08:47

Yardman

Joined: 12 Apr 2005
Posts: 244
Location: US

Yardman 07 Aug 2007, 08:54

[ Post removed by author. ]

Last edited by Yardman on 04 Apr 2012, 02:27; edited 1 time in total

07 Aug 2007, 08:54

madmatt

Joined: 07 Oct 2003
Posts: 1045
Location: Michigan, USA

madmatt 08 Aug 2007, 05:11

Here's some code:

Code:

local argc:DWORD, argv:DWORD, stringmem:DWORD

     invoke  GetCommandLine
     mov     [stringmem], eax
     ;argv = pointer to array of unicode strings, argc = number of string arguments
     invoke  CommandLineToArgvW, eax, addr argc
     mov     [argv], eax
     .
     .
     .
     invoke  LocalFree, [stringmem]
     invoke  ExitProcess, 0

08 Aug 2007, 05:11

shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 08 Aug 2007, 06:10

maybe this more correct (i've not tested it, just by docs):

Code:

     . 
     invoke  GlobalFree,[argv]
     invoke  ExitProcess, 0

08 Aug 2007, 06:10

asmfan

Joined: 11 Aug 2006
Posts: 392
Location: Russian

asmfan 08 Aug 2007, 07:39

Code:

invoke  LocalFree, [stringmem]

wrong while

Code:

invoke  GlobalFree,[argv]

is right.
GetCommandLine returns only pointer on already allocated by loader memory. While CommandLineToArgvW allocates additional memory for all args within commandline. Thus this allocated memory should be freed.

_________________
Any offers?

08 Aug 2007, 07:39

pjd

Joined: 15 Jul 2007
Posts: 47

pjd 08 Aug 2007, 16:33

What I really wanted was something that gets one argument at a time and returns a pointer to a null-terminated string like on linux.

that won't be hard to write though.

Is there anything that will show me what important functions are in the api? using msdn is like stumbling blind until the solution appears out of nowhere

08 Aug 2007, 16:33

shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 09 Aug 2007, 04:53

check this: http://board.flatassembler.net/topic.php?t=6663

09 Aug 2007, 04:53

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