WM_CAP_DRIVER_CONNECT
//ActiveX ---->OnCreate
m_pit.Create(IDD_CAM_DIALOG,this);
CRect rc;
this->GetClientRect(&rc);
m_pit.m_cam.MoveWindow(&rc);
m_pit.ShowWindow(SW_SHOW);
pThread_Cam = AfxBeginThread((AFX_THREADPROC)CamThreadProc,this);
CloseHandle(m_pit.pThread_Cam);