title: How can I create a WebBrowser control (ActiveX / IWebBrowser2) without a UI?
body: <p>I cannot figure out how to use the WebBrowser control without having it create a window in the taskbar.</p>
  
  <p>I am using the IWebBrowser2 ActiveX control directly because I need to use some of the advanced features like blocking downloading JAVA/ActiveX/images etc. That apparently is not available in the WPF or winforms WebBrowser wrappers (but these wrappers do have the ability to create the control with no UI)</p>
  
  <p>Here is my code for creating the control:</p>
  
  <pre><code>Type webbrowsertype = Type.GetTypeFromCLSID(Iid_Clsids.CLSID_WebBrowser, true);
  
  m_WBWebBrowser2 = (IWebBrowser2)System.Activator.CreateInstance(webbrowsertype);
  m_WBWebBrowser2.Visible = false;
  
  m_WBOleObject = (IOleObject)m_WBWebBrowser2;
  int iret = m_WBOleObject.SetClientSite(this);
  iret = m_WBOleObject.SetHostNames("me", string.Empty);
  
  tagRECT rect = new tagRECT(0, 0, 0, 0);
  tagMSG nullMsg = new tagMSG();
  m_WBOleInPlaceObject = (IOleInPlaceObject)m_WBWebBrowser2;
  
  //INPLACEACTIVATE the WB
  
  iret = m_WBOleObject.DoVerb((int)OLEDOVERB.OLEIVERB_INPLACEACTIVATE, 
          ref nullMsg, this, 0, IntPtr.Zero, ref rect);
  
  IConnectionPointContainer cpCont = (IConnectionPointContainer)m_WBWebBrowser2; 
  
  Guid guid = typeof(DWebBrowserEvents2).GUID;
  IConnectionPoint m_WBConnectionPoint = null;
  cpCont.FindConnectionPoint(ref guid, out m_WBConnectionPoint);
  
  m_WBConnectionPoint.Advise(this, out m_dwCookie);
  </code></pre>
  
  <p>This code works perfectly but it shows a window in the taskbar. If i omit the DoVerb(OLEDOVERB.OLEIVERB_INPLACEACTIVATE) call, then Navigating to a webpage is not working properly. Navigate() will not download everything on the page and it never fires the DocumentComplete event.  If I add a DoVerb(OLEIVERB_HIDE) then I get the same behavior as if I omitted the DoVerb(OLEDOVERB.OLEIVERB_INPLACEACTIVATE) call.</p>
  
  <p>This seems like a pretty basic question but I couldn't find any examples anywhere.</p>