http://pinvoke.net/default.aspx/Interfaces.DWebBrowserEvents2
[ComImport, SuppressUnmanagedCodeSecurity, InterfaceType(ComInterfaceType.InterfaceIsIDispatch), Guid("34A715A0-6587-11D0-924A-0020AFC7AC4D")]
public interface DWebBrowserEvents2
{
[DispId(0x66)]
void StatusTextChange([MarshalAs(UnmanagedType.BStr)] string Text);
[DispId(0x6c)]
void ProgressChange(int Progress, int ProgressMax);
[DispId(0x69)]
void CommandStateChange(int Command, [MarshalAs(UnmanagedType.VariantBool)] bool Enable);
[DispId(0x6a)]
void DownloadBegin();
[DispId(0x68)]
void DownloadComplete();
[DispId(0x71)]
void TitleChange([MarshalAs(UnmanagedType.BStr)] string Text);
[DispId(0x70)]
void PropertyChange([MarshalAs(UnmanagedType.BStr)] string szProperty);
[DispId(250)]
void BeforeNavigate2([MarshalAs(UnmanagedType.IDispatch)] object pDisp, [In] ref object URL, [In] ref object Flags, [In] ref object TargetFrameName, [In] ref object PostData, [In] ref object Headers, [In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel);
[DispId(0xfb)]
void NewWindow2([In, Out, MarshalAs(UnmanagedType.IDispatch)] ref object ppDisp, [In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel);
[DispId(0xfc)]
void NavigateComplete2([MarshalAs(UnmanagedType.IDispatch)] object pDisp, [In] ref object URL);
[DispId(0x103)]
void DocumentComplete([MarshalAs(UnmanagedType.IDispatch)] object pDisp, [In] ref object URL);
[DispId(0xfd)]
void OnQuit();
[DispId(0xfe)]
void OnVisible([MarshalAs(UnmanagedType.VariantBool)] bool Visible);
[DispId(0xff)]
void OnToolBar([MarshalAs(UnmanagedType.VariantBool)] bool ToolBar);
[DispId(0x100)]
void OnMenuBar([MarshalAs(UnmanagedType.VariantBool)] bool MenuBar);
[DispId(0x101)]
void OnStatusBar([MarshalAs(UnmanagedType.VariantBool)] bool StatusBar);
[DispId(0x102)]
void OnFullScreen([MarshalAs(UnmanagedType.VariantBool)] bool FullScreen);
[DispId(260)]
void OnTheaterMode([MarshalAs(UnmanagedType.VariantBool)] bool TheaterMode);
[DispId(0x106)]
void WindowSetResizable([MarshalAs(UnmanagedType.VariantBool)] bool Resizable);
[DispId(0x108)]
void WindowSetLeft(int Left);
[DispId(0x109)]
void WindowSetTop(int Top);
[DispId(0x10a)]
void WindowSetWidth(int Width);
[DispId(0x10b)]
void WindowSetHeight(int Height);
[DispId(0x107)]
void WindowClosing([MarshalAs(UnmanagedType.VariantBool)] bool IsChildWindow, [In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel);
[DispId(0x10c)]
void ClientToHostWindow([In, Out] ref int CX, [In, Out] ref int CY);
[DispId(0x10d)]
void SetSecureLockIcon(int SecureLockIcon);
[DispId(270)]
void FileDownload([In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel);
[DispId(0x10f)]
void NavigateError([MarshalAs(UnmanagedType.IDispatch)] object pDisp, [In] ref object URL, [In] ref object Frame, [In] ref object StatusCode, [In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel);
[DispId(0xe1)]
void PrintTemplateInstantiation([MarshalAs(UnmanagedType.IDispatch)] object pDisp);
[DispId(0xe2)]
void PrintTemplateTeardown([MarshalAs(UnmanagedType.IDispatch)] object pDisp);
[DispId(0xe3)]
void UpdatePageStatus([MarshalAs(UnmanagedType.IDispatch)] object pDisp, [In] ref object nPage, [In] ref object fDone);
[DispId(0x110)]
void PrivacyImpactedStateChange([MarshalAs(UnmanagedType.VariantBool)] bool bImpacted);
[DispId(0x111)]
void NewWindow3([In, Out, MarshalAs(UnmanagedType.IDispatch)] ref object ppDisp, [In, Out, MarshalAs(UnmanagedType.VariantBool)] ref bool Cancel, uint dwFlags, [MarshalAs(UnmanagedType.BStr)] string bstrUrlContext, [MarshalAs(UnmanagedType.BStr)] string bstrUrl);
}