How to convert an editbox to a number assembly?

Question

In TASM for Win32, I have this code:

;------- Edit1 Create ----------------
push    L 0
push    [hInstEdit1]
push    idEdit1
push    [newhwnd]
push    L 20
push    L 200
push    L 50
push    L 130
push    L WS_CHILD+WS_VISIBLE+WS_BORDER+ES_LEFT+ES_NOHIDESEL+ES_AUTOHSCROLL
push    L 0
push    offset EClassName
push    L 0
call    CreateWindowEx
mov [hEdit1],EAX

push    L SW_SHOW
push    [hEdit1]
call    ShowWindow
push    [hEdit1]
call    UpdateWindow

I need to get the number entered by the user in this editbox. The number must be placed in the register. Who knows how to do this?

PS I think you need to use the function GetDlgItemInt

Answer 1

Here is the way found on the Internet

                            ; Input:
    mov esi, offset szMsg1  ; esi - str
    dec msgLength           
    mov ecx, msgLength      ; ecx - length str
                            ; Output:
                            ; EAX = integer value
string_to_int:
    xor ebx,ebx             ; clear ebx
next_digit:
    movzx eax, byte ptr [esi]
    inc esi
    sub al,'0'              ; convert from ASCII to number
    imul ebx,10
    add ebx,eax             ; ebx = ebx*10 + eax
    loop next_digit         ; while (--ecx)
    mov eax,ebx