;=============================================================================================================================================
;																		Step_1.asm
;This program is an asm representation of the first step of WinApi FirstSteps' Course						 
;(C)I don't take any responsibility for the use of this program
;										                 Zedr0n -- connection closed
;=============================================================================================================================================
;=============================================================================================================================================
; Options/Declarations
;=============================================================================================================================================
.386
.model flat, stdcall
option casemap:none
include windows.inc
include kernel32.inc
include user32.inc

includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\user32.lib
;=============================================================================================================================================
; Data segment
;=============================================================================================================================================
.data
Sign  db "Zedr0n's step 1",0
;============================================================================================================================================
; Variables segment
;============================================================================================================================================
.data?
hWnd  HWND ?
info  LPSTR ?
;=============================================================================================================================================
; Code segment
;=============================================================================================================================================
.code
start:
    invoke GetDesktopWindow
    mov hWnd,eax
    invoke GetWindow,hWnd,GW_CHILD
    mov hWnd,eax
    .while hWnd!=0
        invoke GetWindow,hWnd,GW_HWNDNEXT
        mov hWnd,eax
        invoke GetWindowText,hWnd,offset info,100
        invoke lstrlen,offset info
        .if eax!=0
            invoke MessageBox,NULL,offset info,offset Sign,MB_OK 
        .endif
    .endw  
    invoke ExitProcess,NULL
end start