I need help please

hi, my name is edie I'm from Panama and I need some help Confused

:
this is the problem, i need to do an app that may read (open) a txt file then if the user change the text, it need to save it. I'm new in Flat Assambler, and I don't have a list of the APIs, if somebody can help me please, I need it for november 12 Crying or Very sad

(tomorrow) I have this but it isn't compleate

Code:

++++++++++++++[b]ASM FILE[/b]++++++++
format PE GUI
include 'macros.inc'
NULL = 00h
WM_DESTROY = 0002h
GWL_WNDPROC = -4
WS_VISIBLE = 010000000h
WS_SYSMENU = 000080000h
WS_THICKFRAME = 000040000h
WS_EX_TOPMOST = 00008h
ES_MULTILINE = 0040h
ES_AUTOVSCROLL = 0004h
struc POINT
{
.x dd ?
.y dd ?
}
struc MSG
{
.hwnd dd ?
.message dd ?
.wParam dd ?
.lParam dd ?
.time dd ?
.pt POINT
}
section '.code' code readable executable
call CreateWindowEx,WS_EX_TOPMOST,_class,_title,\
WS_VISIBLE or WS_SYSMENU or WS_THICKFRAME\
or ES_AUTOVSCROLL or ES_MULTILINE,\
0,0,800,570,\
NULL,NULL,NULL,NULL
mov [hwnd],eax
call SetWindowLong,eax,GWL_WNDPROC,WndProc
mov [oldproc],eax
msg_loop:
call GetMessage,msg,NULL,0,0
or eax,eax
jz terminate
call TranslateMessage,msg
call DispatchMessage,msg
jmp msg_loop
terminate:
call ExitProcess,[msg.wParam]
WndProc:
push ebp
mov ebp,esp
mov eax,[ebp+12]
cmp eax,WM_DESTROY
jne .default
call PostQuitMessage,0
.default:
call CallWindowProc,[oldproc],[ebp+8],\
[ebp+12],[ebp+16],[ebp+20]
leave
retn 16
section '.data' data readable writeable
hwnd dd ?
oldproc dd ?
msg MSG
_class db 'EDIT',0
_title db 'Ensamblando Win32',0
section '.idata' import data readable
library kernel,'KERNEL32.DLL',\
user,'USER32.DLL'
import kernel,\
ExitProcess,'ExitProcess'
import user,\
CallWindowProc,'CallWindowProcA',\
CreateWindowEx,'CreateWindowExA',\
DispatchMessage,'DispatchMessageA',\
GetMessage,'GetMessageA',\
PostQuitMessage,'PostQuitMessage',\
SetWindowLong,'SetWindowLongA',\
TranslateMessage,'TranslateMessage'

Code:

************** [b]macros.inc [/b]********************

macro library [name,string]
{ forward
local _label
dd RVA name,0,0,RVA _label,RVA name
common
dd 0,0,0,0,0
forward
_label db string,0
}
macro import name,[label,string]
{
common
name:
forward
local _label
label dd RVA _label
API.#label = 1
common
dd 0
forward
_label dw 0
db string,0
}
macro call proc,[arg]
{
reverse
if arg eq
else
pushd arg
end if
common
if defined API.#proc
call [proc]
else
call proc
end if
}                               
******************************************

Sorry my English Laughing

[edit by moderator]please use the [ code ] [ / code ] tags around sections of code[/edit by moderator]