public virtual void SetSite(Object pUnkSite)
{
if (inputObjectSite != null)
{
Marshal.ReleaseComObject(inputObjectSite);
}
if (webBrowserClass != null)
{
Marshal.ReleaseComObject(webBrowserClass);
webBrowserClass = null;
}
inputObjectSite = (IInputObjectSite)pUnkSite;
if (inputObjectSite != null)
{
//pUnkSite is a pointer to object that implements IOleWindowSite or something similar
//we need to get access to the top level object - explorer itself
//to allows this explorer objects also implement IServiceProvider interface
//(don't mix it with System.IServiceProvider!)
//we get this interface and ask it to find WebBrowserApp
_IServiceProvider sp = inputObjectSite as _IServiceProvider;
Guid guid = ExplorerGUIDs.IID_IWebBrowserApp;
Guid riid = ExplorerGUIDs.IID_IUnknown;
try
{
object w;
sp.QueryService(ref guid, ref riid, out w);
//once we have interface to the COM object we can create RCW from it
webBrowserClass = (WebBrowserClass)Marshal.CreateWrapperOfType(w as IWebBrowser, typeof(WebBrowserClass));
if (SetSiteEvent != null)
{
SetSiteEvent(pUnkSite);
}
}
catch (COMException)
{
//we anticipate this exception in case our object instantiated
//as a Desk Band. There is no web browser service available.
}
}
else
{
if (SetSiteEvent != null)
{
SetSiteEvent(pUnkSite);
}
}
}
public virtual void SetSite(Object pUnkSite)
{
if (BandObjectSite != null)
{
Marshal.ReleaseComObject(BandObjectSite);
}
if (Explorer != null)
{
Marshal.ReleaseComObject(Explorer);
Explorer = null;
}
BandObjectSite = (IInputObjectSite)pUnkSite;
if (BandObjectSite != null)
{
//pUnkSite is a pointer to object that implements IOleWindowSite or something similar
//we need to get access to the top level object - explorer itself
//to allows this explorer objects also implement IServiceProvider interface
//(don't mix it with System.IServiceProvider!)
//we get this interface and ask it to find WebBrowserApp
_IServiceProvider sp = BandObjectSite as _IServiceProvider;
Guid guid = ExplorerGUIDs.IID_IWebBrowserApp;
Guid riid = ExplorerGUIDs.IID_IUnknown;
try
{
object w;
sp.QueryService(
ref guid,
ref riid,
out w);
//once we have interface to the COM object we can create RCW from it
//Error 8 Interop type 'SHDocVw.WebBrowserClass' cannot be embedded. Use the applicable interface instead.
Explorer = (WebBrowserClass)Marshal.CreateWrapperOfType(
w as IWebBrowser,
typeof(WebBrowserClass)
);
OnExplorerAttached(EventArgs.Empty);
}
catch (COMException)
{
//we anticipate this exception in case our object instantiated
//as a Desk Band. There is no web browser service available.
}
}
}
virtual public void QueryExplorerWindow()
{
if (BandObjectSite != null)
{
_IServiceProvider sp = BandObjectSite as _IServiceProvider;
Guid guid = ExplorerGUIDs.IID_IWebBrowserApp;
Guid riid = ExplorerGUIDs.IID_IUnknown;
try
{
object w;
sp.QueryService(ref guid, ref riid, out w);
//once we have interface to the COM object we can create RCW from it
_Explorer = (WebBrowserClass)Marshal.CreateWrapperOfType(
w as IWebBrowser, typeof(WebBrowserClass));
OnExplorerAttached(EventArgs.Empty);
}
catch (COMException)
{
}
}
}
