winapi: CreateFile - Forums

Home » Forums » MAIN » winapi: CreateFile

Hello,

i will create a blank file and use the winapi "CreateFile" with follow code:



.386P

Locals

jumps

.Model Flat ,StdCall



Include C:\tasm\INCLUDE\W32.INC





extrn	  ExitProcess     : PROC

extrn	  CreateFile	  : PROC





.Data

lpName db "test.txt"





.Code

Main:

      CALL CreateFile,offset lpName,GENERIC_READ,FILE_SHARE_READWRITE,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0

      CALL ExitProcess, 0

End Main

It produce erros:

============ ERROR ============

C:\tasm>win32 CreateFile
Turbo Assembler Version 5.0 Copyright (c) 1988, 1996 Borland International

Assembling file: CreateFile.ASM
**Error** C:\tasm\INCLUDE\W32.INC(33) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(1791) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(1846) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(2290) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(2694) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(2835) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(2883) Illegal forward reference: UNICODE
**Error** C:\tasm\INCLUDE\W32.INC(4298) PROCDESC(2) Symbol already different kind: ExitProcess
**Error** C:\tasm\INCLUDE\W32.INC(4347) PROCDESC(2) Symbol Already different kind: CreateFileA
Error messages: 9
Warning messages: None
Passes: 1

Turbo Link Version 1.6.71.0 Copyright (c) 1993,1996 Borland International
Fatal: Unable to open file 'CreateFile.obj'
===============================

mmh where is the error in my code?

Posted on 2004-09-14 03:35:55 by cre

winapi: CreateFile

Well first of all most guys around here code with MASM, not TASM as you use it. :o You can download MASM32 package at www.movsd.com :wink:
Dominik

Posted on 2004-09-14 05:29:07 by Dom

winapi: CreateFile

Here's a link to a tasm ideal windows include file.
http://www.mujweb.cz/www/komsbomb/dev/win32ti.zip

Posted on 2004-09-14 09:29:59 by Odyssey

winapi: CreateFile

This one works:



.386 

.model flat ,stdcall 



GENERIC_WRITE		equ 40000000h

FILE_SHARE_WRITE	equ 2h

CREATE_ALWAYS		equ 2

FILE_ATTRIBUTE_NORMAL	equ 80h



extrn CreateFileA:proc

CreateFile equ <CreateFileA>

extrn ExitProcess:proc



.data

lpName	db "test.txt",0 



.code 

start: 

	call	CreateFile,OFFSET lpName,\

			GENERIC_WRITE,\

			FILE_SHARE_WRITE,\

			0,\

			CREATE_ALWAYS,\

			FILE_ATTRIBUTE_NORMAL,\

			0 

	call	ExitProcess,0 

END start

Building the executable:



tasm32  /ml Createfile.asm

ilink32 Createfile.obj,,,kernel32.lib

Posted on 2004-09-14 15:20:07 by Vortex

ASM Community