C / C++ / MFC

	<br />
	while (Running) {<br />
		Sleep(1000);	<br />
                hWnd_curr = GetForegroundWindow();<br />
		if(hWnd_curr != hWnd_old) {<br />
			hWnd_old = hWnd_curr;<br />
			GetWindowText(hWnd_curr,window_name,sizeof(window_name));<br />
<br />
			Rid[0].hwndTarget = hWnd_curr;  //define to which window register raw input<br />
                        //here I get error: unused = CXX0030: Error: expression cannot be evaluated<br />
<br />
			if(!RegisterRawInputDevices(Rid, 1, sizeof (Rid[0]))) {<br />
				_snprintf(logevent,sizeof(logevent),"Register Raw Input Devices FAILED");<br />
				Write2File(logevent);<br />
				continue;<br />
			}<br />
	<br />
			if(pCreateHook != NULL && (dwThreadId = GetWindowThreadProcessId(hWnd_curr,&dwProcessId))!=0) <br />
						msgHook = pCreateHook(WH_CALLWNDPROC,hwndMain,dwThreadId);<br />
<br />
		}<br />
            }

static LRESULT CALLBACK msghook(UINT nCode, WPARAM wParam, LPARAM lParam) {<br />
	<br />
	if(nCode < 0) {<br />
		CallNextHookEx(hook, nCode, wParam, lParam);<br />
		return 0;<br />
	}<br />
<br />
	INFO f; <br />
	f.code=nCode; <br />
	f.hhook=hook; <br />
	f.lParam=lParam;<br />
<br />
	cwpMessageParams = (PMSG)lParam;<br />
<br />
	if(cwpMessageParams->message == WM_INPUT) <br />
		SendMessage(mForm, messageCode, (WPARAM)(cwpMessageParams->message), (LPARAM)&f);<br />
<br />
	return CallNextHookEx(hook, nCode, wParam, lParam);<br />
}