有关钩子函数的小问题

[fthislife]

看看下边的程序什么按ALT+Q或ALT+S没反应？

LRESULT CALLBACK JournalLogProc(int nCode,WPARAM wparam,LPARAM lparam)//钩子函数
{
	if(nCode<0)
		return CallNextHookEx(hook,nCode,wparam,lparam);
	if(HC_ACTION==nCode)
	{
		EVENTMSG* pEvt=(EVENTMSG*)lparam;
		if(pEvt->message==WM_KEYDOWN)
		{
			int vKey=LOBYTE(pEvt->paramL);   //取得虚拟键值
			if((GetKeyState(VK_MENU)<0)&&((int)('Q')==vKey))
				start();
			if((GetKeyState(VK_MENU)<0)&&((int)('S')==vKey))
			{
				HWND hwnd=NULL;
				hwnd=FindWindow(NULL,"mytool");
				if(tag==-1)
				{
					tag*=(-1);
					ShowWindow(hwnd,SW_HIDE);
				}
				else
				{
					tag*=(-1);
					ShowWindow(hwnd,SW_SHOW);
				}
			}
		}
	}
	return CallNextHookEx(hook,nCode,wparam,lparam);
}

void SetHook()//设置钩子
{
	hook=SetWindowsHookEx(WH_JOURNALRECORD,JournalLogProc,GetModuleHandle("tool.dll"),0);
}

void StopHook()
{
	if(hook!=NULL)
	{
		UnhookWindowsHookEx(hook);
		hook=NULL;
	}
}

[ypb362148418]

记得alt键是VK_SYSKEYDOWN啊