tengo estos dos métodos para obtener la entrada del registro de viaje actual y viajar a una entrada de registro recuperado llamando al método GetTravelLogEntry
:ITravelLogStg :: travelto falla con el error 0x80004002
public static ITravelLogEntry GetTravelLogEntry(WebBrowser webBrowser)
{
int HRESULT_OK = 0;
SHDocVw.IWebBrowser2 axWebBrowser = (SHDocVw.IWebBrowser2)webBrowser.ActiveXInstance;
IServiceProvider psp = axWebBrowser as IServiceProvider;
if (psp == null) throw new Exception("Could not get IServiceProvider.");
IntPtr oret = IntPtr.Zero;
int hr = psp.QueryService(ref SID_STravelLogCursor, ref IID_ITravelLogStg, out oret);
if ((oret == IntPtr.Zero) || (hr != HRESULT_OK)) throw new Exception("Failed to query service.");
ITravelLogStg tlstg = Marshal.GetObjectForIUnknown(oret) as ITravelLogStg;
if (null == tlstg) throw new Exception("Failed to get ITravelLogStg");
ITravelLogEntry ptle = null;
hr = tlstg.GetRelativeEntry(0, out ptle);
if (hr != HRESULT_OK) MessageBox.Show("Failed to get travel log entry with error " + hr.ToString("X"));
Marshal.ReleaseComObject(tlstg);
return ptle;
}
public static void TravelToTravelLogEntry(WebBrowser webBrowser, ITravelLogEntry travelLogEntry)
{
int HRESULT_OK = 0;
SHDocVw.IWebBrowser2 axWebBrowser = (SHDocVw.IWebBrowser2)webBrowser.ActiveXInstance;
IServiceProvider psp = axWebBrowser as IServiceProvider;
if (psp == null) throw new Exception("Could not get IServiceProvider.");
IntPtr oret = IntPtr.Zero;
int hr = psp.QueryService(ref SID_STravelLogCursor, ref IID_ITravelLogStg, out oret);
if ((oret == IntPtr.Zero) || (hr != HRESULT_OK)) throw new Exception("Failed to query service.");
ITravelLogStg tlstg = Marshal.GetObjectForIUnknown(oret) as ITravelLogStg;
if (null == tlstg) throw new Exception("Failed to get ITravelLogStg");
hr = tlstg.TravelTo(travelLogEntry);
if (hr != HRESULT_OK) MessageBox.Show("Failed to travel to log entry with error " + hr.ToString("X"));
Marshal.ReleaseComObject(tlstg);
}
El WebBrowser
aquí es una. NET WebBrowser
control. Cuando llamo al ITravelLogStg::TravelTo
dentro del método TravelToTravelLogEntry
recibo un 0x80004002, que según la página this es un error Interface not supported
. ¿Estoy haciendo algo mal?
PD: Tomé la mayor parte de este código desde here.
¿Has probado sin utilizar Marshal.ReleaseComObject (tlstg)? –
@Simon: Acabo de probar esto, a veces falla. – Juan