用masm32写的软件开发的一个小程序无法编译通过，各位同仁帮忙看看
.386
.model flat, stdcall
option casemap :none ; case sensitive

include \masm32\include\windows.inc
include \masm32\include\masm32.inc
include \masm32\include\user32.inc
include \masm32\include\kernel32.inc
include \masm32\macros\macros.asm

includelib \masm32\lib\masm32.lib
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib

.data

szCaption db 'Win32汇编例子',0
szText db 'Win32汇编，Simple and powerful!',0

.code

start:
invoke MessageBox,NULL,addr szText,addr szCaption,MB_OK
invoke ExitProcess,NULL

end start
其中出现的各种的头文件，及lib文件都在。
而结果是：
db 存在语法错误
szCaption，szText 都是无效的
不知道是怎么回事啊

[解决办法]
.386
.model flat,stdcall
option casemap:none
includewindows.inc
includeuser32.inc
includelibuser32.lib
includekernel32.inc
includelibkernel32.lib
.data
szCaption db 'Win32汇编例子',0
szText db 'Win32汇编，Simple and powerful!',0
.code
start:
invoke MessageBox,NULL,addr szText,addr szCaption,MB_OK
invoke ExitProcess,NULL
end start
[解决办法]

探讨

.386
.model flat, stdcall
option casemap :none ; case sensitive

include \masm32\include\windows.inc
include \masm32\include\masm32.inc
include \masm32\include\user32.inc
include \m……

[解决办法]
szCaption db 'Win32汇编例子',0
szText db 'Win32汇编，Simple and powerful!',0
引号要用半角英文字符