HRESULT RPInitializeGuest(RPGUESTINFO *pInfo, HINSTANCE hInstance, LPCTSTR pszHostInfo,
RPGUESTMSGFN pfnMsgFunction, LPARAM lMsgFunctionParam)
{
_TCHAR szGuestClass[(sizeof(g_szGuestWndClass)/sizeof(_TCHAR))+20];
_TCHAR *pszHostClass;
LRESULT lr;
if (!pInfo || !pszHostInfo)
return E_POINTER;
pInfo->hInstance = hInstance;
pInfo->hHostMessageWindow = NULL;
pInfo->hGuestMessageWindow = NULL;
pInfo->bGuestClassRegistered = FALSE;
pInfo->pfnMsgFunction = pfnMsgFunction;
pInfo->lMsgFunctionParam = lMsgFunctionParam;
// find the host message window
//
pszHostClass = (_TCHAR *)LocalAlloc(LMEM_FIXED, (_tcslen(g_szHostWndClass) + _tcslen(pszHostInfo) + 1) * sizeof(_TCHAR));
if (!pszHostClass)
return E_OUTOFMEMORY;
wsprintf(pszHostClass, g_szHostWndClass, pszHostInfo);
pInfo->hHostMessageWindow = FindWindow(pszHostClass, NULL);
LocalFree(pszHostClass);
if (!pInfo->hHostMessageWindow)
return HRESULT_FROM_WIN32(ERROR_HOST_UNREACHABLE);
// create the guest message window
//
wsprintf(szGuestClass, g_szGuestWndClass, GetCurrentProcessId());
if (!RegisterWndClass(szGuestClass, hInstance))
return HRESULT_FROM_WIN32(GetLastError());
pInfo->bGuestClassRegistered = TRUE;
//
pInfo->hGuestMessageWindow = CreateWindow(szGuestClass, NULL, 0, 0,0, 1,1, NULL, NULL, hInstance, (LPVOID)pInfo);
if (!pInfo->hGuestMessageWindow)
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(GetLastError());
}
// register with the host
//
if (!RPSendMessage(RP_IPC_TO_HOST_REGISTER, 0, 0, g_szRegistration, sizeof(g_szRegistration), pInfo, &lr))
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(ERROR_HOST_UNREACHABLE);
}
if (!lr)
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(ERROR_INVALID_ACCESS);
}
return S_OK;
}
HRESULT RPInitializeGuest(RPGUESTINFO *pInfo, HINSTANCE hInstance, LPCTSTR pszHostInfo,
RPGUESTMSGFN pfnMsgFunction, LPARAM lMsgFunctionParam)
{
_TCHAR szGuestClass[(sizeof(g_szGuestWndClass)/sizeof(_TCHAR))+20];
_TCHAR *pszHostClass;
RAWINPUTDEVICE rid;
LRESULT lr;
if (!pInfo || !pszHostInfo)
return E_POINTER;
pInfo->hInstance = hInstance;
pInfo->hHostMessageWindow = NULL;
pInfo->hGuestMessageWindow = NULL;
pInfo->bGuestClassRegistered = FALSE;
pInfo->pfnMsgFunction = pfnMsgFunction;
pInfo->lMsgFunctionParam = lMsgFunctionParam;
// find the host message window
//
pszHostClass = (_TCHAR *)LocalAlloc(LMEM_FIXED, (_tcslen(g_szHostWndClass) + _tcslen(pszHostInfo) + 1) * sizeof(_TCHAR));
if (!pszHostClass)
{
RPUninitializeGuest(pInfo);
return E_OUTOFMEMORY;
}
wsprintf(pszHostClass, g_szHostWndClass, pszHostInfo);
pInfo->hHostMessageWindow = FindWindow(pszHostClass, NULL);
LocalFree(pszHostClass);
if (!pInfo->hHostMessageWindow)
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(ERROR_HOST_UNREACHABLE);
}
// create the guest message window
//
wsprintf(szGuestClass, g_szGuestWndClass, GetCurrentProcessId());
if (!RegisterWndClass(szGuestClass, hInstance))
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(GetLastError());
}
pInfo->bGuestClassRegistered = TRUE;
//
pInfo->hGuestMessageWindow = CreateWindow(szGuestClass, NULL, 0, 0,0, 1,1, NULL, NULL, hInstance, (LPVOID)pInfo);
if (!pInfo->hGuestMessageWindow)
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(GetLastError());
}
// register with the host
//
if (!RPSendMessage(RP_IPC_TO_HOST_REGISTER, 0, 0, g_szRegistration, sizeof(g_szRegistration), pInfo, &lr))
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(ERROR_HOST_UNREACHABLE);
}
if (!lr)
{
RPUninitializeGuest(pInfo);
return HRESULT_FROM_WIN32(ERROR_INVALID_ACCESS);
}
// disable system shortcuts (e.g. Windows-key shortcuts) while the guest is the foreground app
rid.usUsagePage = 0x01;
rid.usUsage = 0x06;
rid.dwFlags = RIDEV_NOHOTKEYS;
rid.hwndTarget = 0;
RegisterRawInputDevices(&rid, 1, sizeof(rid));
return S_OK;
}
