Wii-ndows Media Player

/*
 * Source Code By Yousef Jamal Wadi
 * WMPControlYJW Library Created by Yousef Jamal Wadi 
 * Feel Free To Distribute as you like ;) 
 * 
 * Yousef Jamal Wadi 
 * Software Arch. and Engineer 
 * German Jordanian University 
 * 
 */

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Runtime.InteropServices; // To Work On Introping WMP

namespace WMPControlYJW
{
    public class WMPYJW
    {
        private Int32 wmHandle;
        private const int WM_COMMAND = 0x111;

        //Commands for Windows Media Player
        #region Commands 
        private const int E_B = 0x00000000;

        private const int WM_Play = 0x00014978 ;
        private const int WM_Stop = 0x00014979 ;
        private const int WM_Next = 0x0001497B ;
        private const int WM_Mute = 0x00014981 ;
        private const int WM_VUp = 0x0001497F ;
        private const int WM_VDown = 0x00014980 ;
        private const int WM_Prev = 0x0001497A ;
        private const int WM_FastF = 0x0001497D;
        #endregion  

        // Functions to deal with the API
        #region WIN32 Functions
        ////Dealing with the WIN32////////////////
        [DllImport("User32.dll")]
        public static extern int FindWindow(string strClassName, string strWindowName);

        [DllImport("User32.dll")]
        public static extern int FindWindowEx(int hwndParent, int hwndChildAfter, string strClassName, string strWindowName);

        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(int hWnd,int Msg,int wParam,[MarshalAs(UnmanagedType.LPStr)] string lParam);

        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(int hWnd,int Msg,int wParam,int lParam);
        ///////////////
        #endregion  
        
        //Empty Constructor
        public WMPYJW()
        {
        }

        // Connects the library with the Windows Media Player Instance to send commands 
        #region Connect WMP
                public string ConnectWMP()
        {
            try
            {
                wmHandle = FindWindow("WMPLayerApp", "Windows Media Player");
                return(null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion 

        // Sends the play command to the open WMP Window
        #region Play Function
        public string Play()
        {
                try
                {
                    SendMessage(wmHandle, WM_COMMAND, WM_Play,E_B);
                    return (null);
                }
                catch (Exception e)
                {
                    return (e.Message.ToString());
                }
        }        
        #endregion //Function To Send Play Command To WMP

        // Sends the Stop command to the open WMP Window
        #region Stop Function
        public string Stop()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_Stop, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion

        // Send the Next command to the open WMP Window 
        #region Next Function
        public string Next()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_Next, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion
        
        // Send the mute command to the open WMP Window 
        #region Mute Function
        public string Mute()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_Mute, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion

        // Send Volume down command to the open WMP Window
        #region Volume Down Function
        public string Volume_Down()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_VDown, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion

        // Sends Volume Up command to the open WMP Window
        #region Volume Up Function
        public string Volume_Up()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_VUp, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion

        // Sends the Volume Down command to the open WMP Window
        #region Previous Function
        public string Previous()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_Prev, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion

        // Sends the Fast Forward command to the open WMP Window
        #region Fast Forward Function
        public string Fast_Forward()
        {
            try
            {
                SendMessage(wmHandle, WM_COMMAND, WM_FastF, E_B);
                return (null);
            }
            catch (Exception e)
            {
                return (e.Message.ToString());
            }
        }
        #endregion


    }
}