/// <include file='doc\MSHTMLHost.uex' path='docs/doc[@for="TridentSite.CloseDocument"]/*' />
/// <devdoc>
/// Closes the mshtml instance by deactivating and releasing it.
/// </devdoc>
protected void CloseDocument()
{
try {
if (tridentDocument != null)
{
if (tridentView != null)
{
tridentView.UIActivate(0);
tridentView.SetInPlaceSite(null);
tridentView = null;
}
tridentDocument = null;
// Change 1:
// After 2 days of investigation... this is all that came out of it (!)...
// Calling IOleObject::Close does not seem to work (you guessed it... in the StyleBuilder only)
// It causes the app to hang around forever; very bizarre
//
// Anyway, from Trident sources, they handle the case where a container does not call
// Close, and releases references directly
//
// I thought maybe I should call DoVerb(OLEIVERB_HIDE) at least.
// It seems to work, but it theres also some code in trident that says HIDE should not be
// called when its running in MsoDocMode. Whats that? For now I am calling it.
//
// tridentOleObject.Close(NativeMethods.OLECLOSE_NOSAVE);
// Change 2:
// Furthermore, it looks like I can't call DoVerb(OLEIVERB_HIDE) for docobjects...
// We get back E_UNEXPECTED. Apparently the right thing to do is to call
// IOleDocumentView::UIActivate(0) and IOleDocumentView::SetInPlaceSite(null)
// both of which I am now doing above
//
// Debug.Assert(parentControl.IsHandleCreated);
// NativeMethods.COMRECT r = new NativeMethods.COMRECT();
// NativeMethods.GetClientRect(parentControl.Handle, r);
//
// tridentOleObject.DoVerb(NativeMethods.OLEIVERB_HIDE, IntPtr.Zero, (NativeMethods.IOleClientSite)this, 0,
// parentControl.Handle, r.ToWin32InteropCOMRECT());
tridentOleObject.SetClientSite(null);
tridentOleObject = null;
}
}
catch (Exception e) {
Debug.Fail(e.ToString());
}
}
///////////////////////////////////////////////////////////////////////////
// IOleDocumentSite Implementation
public virtual int ActivateMe(NativeMethods.IOleDocumentView pViewToActivate)
{
Debug.Assert(pViewToActivate != null,
"Expected the view to be non-null");
if (pViewToActivate == null)
{
return(NativeMethods.E_INVALIDARG);
}
NativeMethods.COMRECT r = new NativeMethods.COMRECT();
NativeMethods.GetClientRect(parentControl.Handle, r);
tridentView = pViewToActivate;
tridentView.SetInPlaceSite((NativeMethods.IOleInPlaceSite) this);
tridentView.UIActivate(1);
tridentView.SetRect(r);
tridentView.Show(1);
return(NativeMethods.S_OK);
}
///////////////////////////////////////////////////////////////////////////
// IOleDocumentSite Implementation
public virtual int ActivateMe(NativeMethods.IOleDocumentView pViewToActivate)
{
Debug.WriteLineIf(StyleBuilder.StyleBuilderSwitch.TraceVerbose, "CTridentSite: IOleDocumentSite::ActivateMe");
Debug.Assert(pViewToActivate != null,
"Expected the view to be non-null");
if (pViewToActivate == null)
{
return(NativeMethods.E_INVALIDARG);
}
//throw new COMException(String.Empty, NativeMethods.E_INVALIDARG);
NativeMethods.COMRECT r = new NativeMethods.COMRECT();
NativeMethods.GetClientRect(parentControl.Handle, r);
tridentView = pViewToActivate;
tridentView.SetInPlaceSite((NativeMethods.IOleInPlaceSite) this);
tridentView.UIActivate(1);
tridentView.SetRect(r.ToWin32InteropCOMRECT());
tridentView.Show(1);
return(NativeMethods.S_OK);
}
///////////////////////////////////////////////////////////////////////////
// IOleDocumentSite Implementation
public virtual int ActivateMe(NativeMethods.IOleDocumentView pViewToActivate) {
Debug.Assert(pViewToActivate != null,
"Expected the view to be non-null");
if (pViewToActivate == null)
return NativeMethods.E_INVALIDARG;
NativeMethods.COMRECT r = new NativeMethods.COMRECT();
NativeMethods.GetClientRect(parentControl.Handle, r);
tridentView = pViewToActivate;
tridentView.SetInPlaceSite((NativeMethods.IOleInPlaceSite)this);
tridentView.UIActivate(1);
tridentView.SetRect(r);
tridentView.Show(1);
return NativeMethods.S_OK;
}