Question

为什么当我尝试写第33段时，GetLastError会返回5？

我的Masm32源代码：

include \masm32\include\masm32rt.inc


.data?
hDrv HANDLE ?


buffer byte 512 dup(?)
tmp512 byte 512 dup(?)

.code

start:

STRING p,"\\.\PhysicalDrive0"

    call main
    inkey
    exit

main proc
local i:dword


invoke CreateFile,addr p,GENERIC_READ or GENERIC_WRITE,NULL,NULL,OPEN_EXISTING,0,0
mov hDrv,eax

mov i,1

.while TRUE
invoke ReadFile,hDrv,addr buffer,512,addr tmp512,NULL
invoke WriteFile,hDrv,addr buffer,512,addr tmp512,NULL
.if eax==1
print str$(i),13,10,0
inc i
.else
invoke GetLastError
print str$(eax),13,10,0
.endif
.endw

invoke CloseHandle,hDrv

    ret

main endp


end start

Answer 1

这里解释了错误代码......

https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382%28v=vs.85%29.aspx

ERROR_ACCESS_DENIED

5 (0x5)

可能是许可问题。

Access is denied.

使用Windows API编写扇区33

1 个答案: