win32汇编窗口问题

                        .386
                        .model flat,stdcall
                        option casemap:none
;\\\\\\\\\\\\\\\\\\\

    include  windows.inc
    include  gdi32.inc
    include  user32.inc
    include  kernel32.inc
    includelib gdi32.lib
    includelib user32.lib
    includelib kernel32.lib

;\\\\\\\\\\\\\\\\\\\\\\\\\

        .data?

    hInstance  dd ?
    hWinMain   dd ?

        .const

    szClassName db 'chuangti',0
    szCaption   db ' 标题',0
    szText      db '努力学习',0

        .code

_WndProc  proc   uses  ebx edi esi,hWnd,uMsg,wParam,lParam

    local    @stPs:PAINTSTRUCT
    local    @stRect:RECT
    local    @hDC

    mov eax,uMsg
    .if eax==WM_PAINT
    invoke BeginPaint,hWnd,addr @stps
    mov @hDC,eax
    invoke GetClientRect,hWnd,addr @stRect
    invoke DrawText,@hDC,offset szText,-1,addr @stRect,DT_SINGLELINE or CENTER or VCENTER

    invoke EndPaint,hWnd,addr @stPs

    .elseif eax==WM_CLOSE
    invoke DestroyWindow,hWinMain
    invoke PostQuitMessage,NULL
    .else
    invoke DefWindowProc,hWnd,uMsg,wParam,lParam
    ret
    .endif


     xor eax,eax
    ret
_WndProc endp

_WinMain  proc

    local  @stWndClass:WNDCALSSEX
    local  @stMsg:MSG

    invoke GetModuleHandle,NULL
    mov hInstance,eax
    invoke RtlZeroMemory,addr @stWndClass,sizeof @stWndClass

;`````

        invoke LoadCursor,0,IDC_ARROW
    mov @stWndClass.hCursor,eax
    push  hInstance
    pop @stWndClass.hInstance
    mov @stWndClass.style,CS_HREDRAW or CS_VREDRAW
    mov @stWndClass.cbSize,sizeof WNDCALLSEX
    mov @stWndClass.lpfnWndProc,_WndProc
    mov @stWndClass.hbrBackground,COLOE_WINDOW+1
    mov @stWndClass.lpClassName,offset szClassName


    invoke RegisterClassEX,addr @stWndClass


    invoke CreateWindowEX,WS_EX_CLINETEDGE,offset szClassName,offsetszCaption,WS_OVERLAPPEDWINDOW,\

        100,100,600,400,NULL,NULL,hInstanse,NULL

     mov hWinMain,eax

     invoke ShowWindow,hWinMain,SW_SHOWNORMAL
    invoke UpdateWindow,hWinMain

    .while   TRUE

    invoke  GetMessage,addr @stMsg,NULL,0,0
    invoke  TranslateMessage,addr @stMsg
    invoke  DisPatchMessage,@stMsg

    .endw
    ret

_WndMain endp



start:
    call _WinMain
    invoke ExitProcess,NULL
end start

    请教一下高手
为什么我在编译的时候经常出现什么什么未定义什么的究竟是哪里的问题呢?

123.asm(37) : error A2006: undefined symbol : @stps
123.asm(37) : error A2114: INVOKE argument type mismatch : argument : 2
123.asm(40) : error A2006: undefined symbol : CENTER
123.asm(40) : error A2114: INVOKE argument type mismatch : argument : 5
123.asm(62) : error A2006: undefined symbol : WNDCALSSEX
123.asm(62) : error A2195: parameter or local cannot have void type
123.asm(82) : error A2006: undefined symbol : RegisterClassEX
123.asm(85) : error A2006: undefined symbol : CreateWindowEX
123.asm(99) : error A2006: undefined symbol : DisPatchMessage
123.asm(104) : fatal error A1010: unmatched block nesting : _WndMain
NMAKE : fatal error U1077: 'e:\masm32\bin\ml.EXE' : return code '0x1'
Stop.

这是哪里的问题？  新手请高手不要见笑O(∩_∩)O

win32汇编 窗口问题