iczelion tut12[4]

                                                file_share_read or file_share_write,\
                                                null,create_new,file_attribute_archive,\
                                                null
                        mov hfile,eax
                        invoke globalalloc,gmem_moveable or gmem_zeroinit,memsize
                        mov  hmemory,eax
                        invoke globallock,hmemory
                        mov  pmemory,eax
                        invoke sendmessage,hwndedit,wm_gettext,memsize-1,pmemory
                        invoke writefile,hfile,pmemory,eax,addr sizereadwrite,null
                        invoke closehandle,hfile
                        invoke globalunlock,pmemory
                        invoke globalfree,hmemory
                    .endif
                    invoke setfocus,hwndedit
                .else
                    invoke destroywindow, hwnd
                .endif
            .endif
        .else
            invoke defwindowproc,hwnd,umsg,wparam,lparam
            ret
.endif
xor    eax,eax
ret
wndproc endp
end start

分析：

        invoke createwindowex,null,addr editclass,null,\
                   ws_visible or ws_child or es_left or es_multiline or\
                   es_autohscroll or es_autovscroll,0,\
                   0,0,0,hwnd,editid,\
                   hinstance,null
        mov hwndedit,eax

处理 wm_create消息时，我们创建一个编辑控件。请注意，我们把该控件大小的有关参数都设成0，因为我们稍后将重新设置该编辑控件的大小，使得其覆盖父窗口的整个客户区。