请教

我在Windows 2000下修改<<XP 下屏蔽\"Alt+Ctrl+Del\">>的程序,出现了一个错误,请问怎么修改????
原程序:
void
KbfilterDevice::KBServiceCallback(
 
                 PKEYBOARD_INPUT_DATA InputDataStart,
                 PKEYBOARD_INPUT_DATA InputDataEnd,
PULONG InputDataConsumed)
{


        if(InputDataStart->Flags == KEY_MAKE ||
InputDataStart->Flags == KEY_E0)

{
        
   if(InputDataStart->MakeCode == 0x1d)
   m_KeyBoardFlag.Ctrl_Flag = TRUE;

   if(InputDataStart->MakeCode == 0x38)
   m_KeyBoardFlag.Alt_Flag = TRUE;

}

if(InputDataStart->Flags & KEY_BREAK)
{
        
   if(InputDataStart->MakeCode == 0x1d)
   m_KeyBoardFlag.Ctrl_Flag = FALSE;

           if(InputDataStart->MakeCode == 0x38)
   m_KeyBoardFlag.Alt_Flag = FALSE;

}
    t << \"scancode \" << InputDataStart->MakeCode << \"\\n\";
    t << \"Keyboard_flag \" << InputDataStart->Flags << \"\\n\";
    t << \"Ctrl_Alt_flag \" << m_KeyBoardFlag.b_KeyBoardFlag + 0 << \"\\n\";


if ((InputDataStart->MakeCode == 0x53) &&
(!(m_KeyBoardFlag.b_KeyBoardFlag ^ KEYBORAD_MASK)))
{
        t << \"condition satisfied \" << InputDataStart->MakeCode << \"\\n\";
        t << \"condition satisfied \" << m_KeyBoardFlag.b_KeyBoardFlag + \'0\' << \"\\n\";



        InputDataStart->MakeCode = 0x00;
        InputDataStart->Flags = 0x00;
}
    
    m_RealClassService(
   m_RealDeviceObject,
   InputDataStart,
   InputDataEnd,
   InputDataConsumed);
}
我改成了,
oid
KbfilterDevice::KBServiceCallback(

               PKEYBOARD_INPUT_DATA InputDataStart,
                PKEYBOARD_INPUT_DATA InputDataEnd,
PULONG InputDataConsumed)
{
int i;

if(InputDataStart->Flags == KEY_MAKE ||InputDataStart->Flags == KEY_E0)
{
       if(InputDataStart->MakeCode == 0x1E)
{
for(i=2;i>0;i--)
{
InputDataStart->MakeCode = 0x4E;
             InputDataStart->Flags = 0x00;

           (*(PSERVICE_CALLBACK_ROUTINE) devExt->UpperConnectData.ClassService)(
           devExt->UpperConnectData.ClassDeviceObject,
           InputDataStart,
           InputDataEnd,
           InputDataConsumed);
}
}
else

{
(*(PSERVICE_CALLBACK_ROUTINE) devExt->UpperConnectData.ClassService)(
           devExt->UpperConnectData.ClassDeviceObject,
           InputDataStart,
           InputDataEnd,
           InputDataConsumed);
}
}
就出现了错误,
E:\\kbfilter_bmyyyud_20050509-1157\\sys\\KbfilterDevice.cpp(0) : fatal error C1051: program database file, \'e:\\kbfilter_bmyyyud_20050509-1157\\sys\\objchk\\i386\\kbfilter.pdb\', has an obsolete format, delete it and recompile
Error executing cl.exe.

如果仅从这个错误信息上看，你可以把objchk那个目录全部删除再重试一下

删了以后就出现了以下错误:
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(166) : error C2065: 'devExt' : undeclared identifier
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(166) : error C2227: left of '->UpperConnectData' must point to class/struct/union
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(166) : error C2228: left of '.ClassService' must have class/struct/union type
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(167) : error C2227: left of '->UpperConnectData' must point to class/struct/union
E:kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(167) : error C2228: left of '.ClassDeviceObject' must have class/struct/union type
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(176) : error C2227: left of '->UpperConnectData' must point to class/struct/union
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(176) : error C2228: left of '.ClassService' must have class/struct/union type
E:kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(177) : error C2227: left of '->UpperConnectData' must point to class/struct/union
E:\kbfilter_bmyyyud_20050509-1157\sys\KbfilterDevice.cpp(177) : error C2228: left of '.ClassDeviceObject' must have class/struct/union type
Error executing cl.exe.

上面问题我已经解决了.  我把程序改为按个"a"键输出一个"++"
安装了这个驱动以后,打开一个记事本,可以在里面使用,其他的键没变..
但将此记事本最小化再还原,整个键盘就没有用了,鼠标也没有用了,这是怎么回事啊????
这个程序还缺什么???