bool CCommonAppUtils::SetAccProperty(HWND hWnd, MSAAPROPID propid, long value) { ATL::CComPtr<IAccPropServices> pAccPropSvc; HRESULT hr = pAccPropSvc.CoCreateInstance(CLSID_AccPropServices, NULL, CLSCTX_SERVER); if (hr == S_OK && pAccPropSvc) { VARIANT var; var.vt = VT_I4; var.intVal = value; pAccPropSvc->SetHwndProp(hWnd, (DWORD)OBJID_CLIENT, CHILDID_SELF, propid, var); return true; } return false; }