Assembler + WinApi

#include "stdafx.h"
#include "assemANDwinapi.h"
extern "C" void StrDel(char*a, int m);
 
#define MAX_LOADSTRING 100
#define ID_EDIT 1001
#define ID_EDIT1 1003
#define ID_BUTTON 1002
 
// Global Variables:
char *chint = new char[20];
char *chBuff;
int n;
static HDC hdc;
HINSTANCE hInst;                                // current instance
WCHAR szTitle[MAX_LOADSTRING];                  // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];            // the main window class name
 
// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);
 
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);
 
    // TODO: Place code here.
   
    // Initialize global strings
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_ASSEMANDWINAPI, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);
 
    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }
 
    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_ASSEMANDWINAPI));
 
    MSG msg;
 
    // Main message loop:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
 
    return (int) msg.wParam;
}

ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;
 
    wcex.cbSize = sizeof(WNDCLASSEX);
 
    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ASSEMANDWINAPI));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_ASSEMANDWINAPI);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
 
    return RegisterClassExW(&wcex);
}
 
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // Store instance handle in our global variable
 
   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);
 
   if (!hWnd)
   {
      return FALSE;
   }
 
   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);
 
   return TRUE;
}
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND hEdit, hEdit1, hButton; 
    switch (message)
    {
    case WM_CREATE:
        //if(message==LOWORD(wParam))
        hEdit = CreateWindow("edit", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT, 
            80, 10, 250, 20, hWnd, (HMENU)ID_EDIT, hInst, NULL);
        hEdit1 = CreateWindow("edit", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT,
            400, 10, 420, 20, hWnd, (HMENU)ID_EDIT1, hInst, NULL);
        hButton = CreateWindow("button", "ENTER", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
            87, 45, 237, 100, hWnd, (HMENU)ID_BUTTON, hInst, NULL);
        break;
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // Parse the menu selections:
            switch (wmId)
            {
            case ID_BUTTON:
                SendMessage(hEdit, EM_GETLINE, 0, (LPARAM)chint);
                n = atoi(chint);
                chBuff = new char[n];
                SendMessage(hEdit, EM_GETLINE, 0, (LPARAM)chBuff);
                StrDel(chBuff,n);
                TextOut(hdc, 80, 152, (LPSTR)chBuff, n);
                break;
            case IDM_ABOUT:
                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                break;
            case IDM_EXIT:
                DestroyWindow(hWnd);
                break;
            default:
                return DefWindowProc(hWnd, message, wParam, lParam);
            }
        }
        break;
    case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
            TextOut(hdc, 10, 12, "ENTER: ", 7); 
            TextOut(hdc, 10, 152,"OUTPUT: ", 8);
            
            // TODO: Add any drawing code that uses hdc here...
            EndPaint(hWnd, &ps);
        }
        break;
    
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}
 
// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    UNREFERENCED_PARAMETER(lParam);
    switch (message)
    {
    case WM_INITDIALOG:
        return (INT_PTR)TRUE;
 
    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return (INT_PTR)TRUE;
        }
        break;
    }
    return (INT_PTR)FALSE;
}

.386
.model flat
.data
.code
 
PUBLIC _StrDel
 
_StrDel PROC
 
        push edi
        push ebx
        push esi
        mov edx, [esp+20]
        mov ecx, [esp+16]
        mov edi, [edp+20]
        xor eax, eax
        mov al, ' '
        cld
        ;-----------------------------------------------//
        repe scasb 
        jecxz c4
        ;-----------------------------------------------//
                mov ebx, edi
                dec ebx 
                repne scasb
                push ecx
                mov ecx, edi
                sub ecx, ebx
                push edi
                mov edi, edx
                mov esi, ebx
                rep movsb
                mov edx, edi
                pop edi
                pop ecx
        ;-----------------------------------------------//
        cmp ecx, 0
        jnz c1
        ;-----------------------------------------------//
c1 :
        repe scasb
        jecxz c4
        ;-----------------------------------------------//
                mov ebx, edi
                dec ebx
                cmp[ebx], ';'
                jne m1
                dec edx
        ;-----------------------------------------------//
m1 :
        repne scasb
        ;-----------------------------------------------//
                push ecx
                mov ecx, edi
                sub ecx, ebx
                push edi
                mov edi, edx
                mov esi, ebx
                rep movsb
                mov edx, edi
                pop edi
                pop ecx
        ;-----------------------------------------------//
        cmp ecx, 0
        jnz c1
        ;-----------------------------------------------//
 
c4 :
        ;-----------------------------------------------//
        mov edi, [esp+20]
        add edi, [esp+16]
        cmp edx, edi
        je c5
        cmp[edx - 1], ' '
        jnz c2
        dec edx
        ;-----------------------------------------------//
c2 :
        mov[edx], 0
c5 :
    pop esi
    pop ebx
    pop edi 
ret
 _StrDel endp
 end