/// This code has been changed by Anup Shinde.
/// contact: anup@micromacs.com   ...:)

/// The original code is written by Matthias Haenel
/// contact: www.intercopmu.de
/// Code was received from: http://www.codeproject.com/cs/miscctrl/winwordcontrol.asp
/// 
/// you can use it free of charge, but please 
/// mention my name ;)
/// 
/// WinWordControl utilizes MS-WinWord2000 and 
/// WinWord-XP
/// 
/// It simulates a form element, with simple tricks.
///


using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Runtime.InteropServices;


namespace WinWordControl
{
	/// <summary>
	/// WinWordControl allows you to load doc-Files to your
	/// own application without any loss, because it uses 
	/// the real WinWord.
	/// </summary>
	public class WinWordControl : System.Windows.Forms.UserControl
	{


		#region "API usage declarations"

		[DllImport("user32.dll")]
		public static extern int FindWindow(string strclassName, string strWindowName);

		[DllImport("user32.dll")]
		static extern int SetParent( int hWndChild, int hWndNewParent);

		[DllImport("user32.dll", EntryPoint="SetWindowPos")]
		static extern bool SetWindowPos(
			int hWnd,               // handle to window
			int hWndInsertAfter,    // placement-order handle
			int X,                  // horizontal position
			int Y,                  // vertical position
			int cx,                 // width
			int cy,                 // height
			uint uFlags             // window-positioning options
			);
		
		[DllImport("user32.dll", EntryPoint="MoveWindow")]
		static extern bool MoveWindow(
			int Wnd, 
			int X, 
			int Y, 
			int Width, 
			int Height, 
			bool Repaint
			);

		[DllImport("user32.dll", EntryPoint="DrawMenuBar")]
		static extern Int32 DrawMenuBar(
			Int32 hWnd
			);

		[DllImport("user32.dll", EntryPoint="GetMenuItemCount")]
		static extern Int32 GetMenuItemCount(
			Int32 hMenu
			);

		[DllImport("user32.dll", EntryPoint="GetSystemMenu")]
		static extern Int32 GetSystemMenu(
			Int32 hWnd,
			bool Revert);

		[DllImport("user32.dll", EntryPoint="RemoveMenu")]
		static extern Int32 RemoveMenu(
			Int32 hMenu,
			Int32 nPosition,
			Int32 wFlags
			);

		
		private const int MF_BYPOSITION = 0x400;
		private const int MF_REMOVE = 0x1000;

		
		const int SWP_DRAWFRAME = 0x20;
		const int SWP_NOMOVE = 0x2;
		const int SWP_NOSIZE = 0x1;
		const int SWP_NOZORDER = 0x4;

		#endregion

				

		/* I was testing wheater i could fix some exploid bugs or not.
		 * I left this stuff in here for people who need to know how to 
		 * interface the Win32-API

		[StructLayout(LayoutKind.Sequential)]
			public struct RECT 
		{
			public int left;
			public int top;
			public int right;
			public int bottom;
		}
		
		[DllImport("user32.dll")]
		public static extern int GetWindowRect(int hwnd, ref RECT rc);
		
		[DllImport("user32.dll")]
		public static extern IntPtr PostMessage(
			int hWnd, 
			int msg, 
			int wParam, 
			int lParam
		);
		*/


		/// <summary>
		/// Change. Made the following variables public.
		/// </summary>

		public  Word.Document document;
		public static Word.ApplicationClass wd = null;
		public  static int wordWnd				= 0;
		public static string filename			= null;
		private static bool	deactivateevents	= false;

		/// <summary>
		/// needed designer variable
		/// </summary>
		private System.ComponentModel.Container components = null;

		public WinWordControl()
		{
			InitializeComponent();
		}

		/// <summary>
		/// cleanup Ressources
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			CloseControl();
			if( disposing )
			{
				if( components != null )
					components.Dispose();
			}
			base.Dispose( disposing );
		}

		#region Component Designer generated code
		/// <summary>
		/// !do not alter this code! It's designer code
		/// </summary>
		private void InitializeComponent()
		{
			// 
			// WinWordControl
			// 
			this.Name = "WinWordControl";
			this.Size = new System.Drawing.Size(440, 336);
			this.Resize += new System.EventHandler(this.OnResize);			
		}
		#endregion


		/// <summary>
		/// Preactivation
		/// It's usefull, if you need more speed in the main Program
		/// so you can preload Word.
		/// </summary>
		public void PreActivate()
		{
			if(wd == null) wd = new Word.ApplicationClass();
		}


		/// <summary>
		/// Close the current Document in the control --> you can 
		/// load a new one with LoadDocument
		/// </summary>
		public void CloseControl()
		{
			/*
			* this code is to reopen Word.
			*/
		
			try
			{
				deactivateevents = true;
				object dummy=null;
				object dummy2=(object)false;
				document.Close(ref dummy, ref dummy, ref dummy);
				// Change the line below.
				wd.Quit(ref dummy2, ref dummy, ref dummy);
				deactivateevents = false;
			}
			catch(Exception ex)
			{
				String strErr = ex.Message;
			}
		}


		/// <summary>
		/// catches Word's close event 
		/// starts a Thread that send a ESC to the word window ;)
		/// </summary>
		/// <param name="doc"></param>
		/// <param name="test"></param>
		private void OnClose(Word.Document doc, ref bool cancel)
		{
			if(!deactivateevents)
			{
				cancel=true;
			}
		}

		/// <summary>
		/// catches Word's open event
		/// just close
		/// </summary>
		/// <param name="doc"></param>
		private void OnOpenDoc(Word.Document doc)
		{
			OnNewDoc(doc);
		}

		/// <summary>
		/// catches Word's newdocument event
		/// just close
		/// </summary>
		/// <param name="doc"></param>
		private void OnNewDoc(Word.Document doc)
		{
			if(!deactivateevents)
			{
				deactivateevents=true;
				object dummy = null;
				doc.Close(ref dummy,ref dummy,ref dummy);
				deactivateevents=false;
			}
		}

		/// <summary>
		/// catches Word's quit event
		/// normally it should not fire, but just to be shure
		/// safely release the internal Word Instance 
		/// </summary>
		private void OnQuit()
		{
			//wd=null;
		}


		/// <summary>
		/// Loads a document into the control
		/// </summary>
		/// <param name="t_filename">path to the file (every type word can handle)</param>
		public void LoadDocument(string t_filename)
		{
			deactivateevents = true;
			filename = t_filename;
		
			if(wd == null) wd = new Word.ApplicationClass();
			try 
			{
				wd.CommandBars.AdaptiveMenus = false;
				wd.DocumentBeforeClose += new Word.ApplicationEvents2_DocumentBeforeCloseEventHandler(OnClose);
				wd.NewDocument += new Word.ApplicationEvents2_NewDocumentEventHandler(OnNewDoc);
				wd.DocumentOpen+= new Word.ApplicationEvents2_DocumentOpenEventHandler(OnOpenDoc);
				wd.ApplicationEvents2_Event_Quit += new Word.ApplicationEvents2_QuitEventHandler(OnQuit);
				
			}
			catch{}

			if(document != null) 
			{
				try
				{
					object dummy=null;
					wd.Documents.Close(ref dummy, ref dummy, ref dummy);
				}
				catch{}
			}

			if( wordWnd==0 ) wordWnd = FindWindow( "Opusapp", null);