.386
   .model flat,stdcall
   option casemap:none

   DlgProc proto :DWORD,:DWORD,:DWORD,:DWORD

   include \masm32\include\windows.inc
   include \masm32\include\user32.inc
   include \masm32\include\kernel32.inc
   includelib \masm32\lib\user32.lib
   includelib \masm32\lib\kernel32.lib

   .data
   DlgName db "MyDialog",0
      AppName db "First",0
      

   .data?
   hInstance HINSTANCE ?
   
   .const
   MyDialog        equ 101
   IDC_IPADDRESS1  equ 1000
   IDM_EXIT        equ 32003


   .code

   start:

       invoke GetModuleHandle, NULL
       mov    hInstance,eax
       invoke DialogBoxParam, hInstance, ADDR DlgName,NULL, addr DlgProc, NULL
       invoke ExitProcess,eax

   DlgProc proc hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
       .IF uMsg==WM_INITDIALOG
           invoke GetDlgItem, hWnd,IDC_IPADDRESS1
           invoke SetFocus,eax
       .ELSEIF uMsg==WM_CLOSE
           invoke SendMessage,hWnd,WM_COMMAND,IDM_EXIT,0
       .ENDIF
       mov eax,TRUE

       ret

   DlgProc endp

   end start