public OpenFileDialogCreationListener( IWin32Window parent )
{
_subClasser = new WindowSubClasser(parent, new WndProcDelegate(WndProc));
_subClasser.Install();
}
/// <summary>
/// Initialize MSHTML by creating a new MSHTML instance, running it, and
/// in-place activating it. The call to IOleObject.DoVerb will result in
/// a call to our IOleDocumentSite.ActivateMe method where we will conclude
/// the initialization sequence.
///
/// This method is based on the CFramerDocument::CreateNewDocObject method
/// from the FramerEx sample (referenced above in the class comment).
/// Differences in our implementation include the fact that we don't use
/// IPersistStorage or IPersistFile to load the contents of the document,
/// we don't call IOleObject.SetHostNames, and we don't call IOleObject.Advise
/// to set up an IAdviseSink (not necessary since we don't need notifications
/// of changes to the data or view).
/// </summary>
private void InitializeMSHTML()
{
// Create the html document
htmlDocument = (IHTMLDocument2)new HTMLDocumentClass();
// Query for its IOleObject interface (core OLE embedded object interface)
oleObject = (IOleObject)htmlDocument;
// Put the compound document object into the running state
int result = Ole32.OleRun(oleObject);
if (result != HRESULT.S_OK)
Marshal.ThrowExceptionForHR(result);
// Inform the embedded object of its "client-site" (i.e. container)
oleObject.SetClientSite((IOleClientSite)(this));
// Lock the OleObject into it's running state (we will unlock it during Dispose)
result = Ole32.OleLockRunning(oleObject, true, false);
if (result != HRESULT.S_OK)
Marshal.ThrowExceptionForHR(result);
// Get the boundaries of the container
RECT containerRect;
GetContainerRect(out containerRect);
// In-Place Activate the MSHTML ActiveDocument (will result in a call to
// IOleDocumentSite.ActivateMe where initialization will continue)
result = oleObject.DoVerb(
OLEIVERB.INPLACEACTIVATE, // request in-place activation
IntPtr.Zero, // MSG for event that invoked the verb (none)
(IOleClientSite)(this), // client site for activation
0, // reserved (must be 0)
this.Handle, // parent-window for active object
ref containerRect); // bounding rectangle in parent window
// check for DoVerb error
if (result != HRESULT.S_OK)
Marshal.ThrowExceptionForHR(result);
// hookup to document events
documentEventRepeater = new HtmlDocumentEventRepeater(htmlDocument);
// If FindForm() is null, this editor is not hosted in a
// managed window, thus, we must subclass the window to wait for
// control key press to push through to PreProcessMessage
// that would normally come through the managed message pump
if (FindForm() == null)
{
NativeWindow nw = new NativeWindow();
nw.AssignHandle(MshtmlWindowHandle);
windowSubClasser = new WindowSubClasser(nw, new WndProcDelegate(WndProcDelegate));
windowSubClasser.Install();
}
}