Glass Effect using dwmapi.dll in windows xp on C# 2005

Question

Hii i am writing a code to make the glass effect on windows form. Well the code works fine on vista but my target is on windows xp. I have copyed all the dll's that are reqired and when i debug i am getting an error "DLL NOT FOUND EXCEPTION UNHANDILED".
Here is the code that i am using:-
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This is the class where i import dwmapi dll.

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace welcome_page
{
    class VistaGlassEffect
    {
        internal class VistaApi
        {
            [DllImport("dwmapi.dll")]
            internal static extern void DwmExtendFrameIntoClientArea(System.IntPtr hWnd, ref Margins pMargins);

            [DllImport("dwmapi.dll")]
            internal static extern void DwmIsCompositionEnabled(ref bool isEnabled);

            internal struct Margins
            {
                public int Left, Right, Top, Bottom;
            }

            // consts for wndproc
            internal const int WM_NCHITTEST = 0x84;
            internal const int HTCLIENT = 1;
            internal const int HTCAPTION = 2;
        }
    }
}

-----------------------------------------------------------------------------------------------------------------------------
This the form where i call this class "VistaGlassEffect"

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.DirectX.AudioVideoPlayback;
using System.Diagnostics;
using System.Drawing.Drawing2D;


namespace welcome_page
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
            this.FitGlass();
        }  
        Video video;
        private welcome_page.VistaGlassEffect.VistaApi.Margins marg;
        private Rectangle topRect = Rectangle.Empty;
        private Rectangle botRect = Rectangle.Empty;
        private Rectangle lefRect = Rectangle.Empty;
        private Rectangle rigRect = Rectangle.Empty;
        
        private void FitGlass()
        {
            // If DWM is not enabled then get out
            if (!this.IsGlassEnabled())
            {
                return;

            }

            // Set the Margins to their default values
            marg.Top = 600; // extend from the top
            marg.Left = 400;  // not used in this sample but could be
            marg.Right = 200; // not used in this sample but could be
            marg.Bottom = 860;// not used in this sample but could be

            this.Paint += new PaintEventHandler(this.Form1_Paint);

            // call the function that gives us glass, 
            // passing a reference to our inset Margins
            welcome_page.VistaGlassEffect.VistaApi.DwmExtendFrameIntoClientArea(this.Handle, ref marg);
        }

       
private void apply()
{
     this.Paint -= new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
     this.RecreateHandle(); //needed if changing on the fly
     this.FitGlass();
   
}    
   

    private bool IsGlassEnabled()
    {
      //if (Environment.OSVersion.Version.Major < 6)
      //{
      //  Debug.WriteLine("How about trying this on Vista?");
      //  return false;
      //}

      //Check if DWM is enabled
      bool isGlassSupported = false;
------welcome_page.VistaGlassEffect.VistaApi.DwmIsCompositionEnabled(ref isGlassSupported);---Here Error OCCURS.
      return isGlassSupported;
    }

    // Alpha-blending Paint after the glass extension
    // this seems better than the winforms transparency approach because here we can click on the glass!
    private void Form1_Paint(object sender, PaintEventArgs e)
    {
      // black brush for Alpha transparency
      SolidBrush blackBrush = new SolidBrush(Color.Black);

      Graphics g = e.Graphics;

      if (this.IsGlassEnabled())
      {      
        // setup the rectangles
        topRect = new Rectangle(0, 0, this.ClientSize.Width, marg.Top);
        lefRect = new Rectangle(0, 0, marg.Left, this.ClientSize.Height);
        rigRect = new Rectangle(this.ClientSize.Width - marg.Right, 0, marg.Right, this.ClientSize.Height);
        botRect = new Rectangle(0, this.ClientSize.Height - marg.Bottom, this.ClientSize.Width, marg.Bottom);
        // Fill Rectangles
        g.FillRectangle(blackBrush, topRect);
        g.FillRectangle(blackBrush, lefRect);
        g.FillRectangle(blackBrush, rigRect);
        g.FillRectangle(blackBrush, botRect);
      }    

      blackBrush.Dispose();
    }

   
  
     
        
    protected override void WndProc(ref Message m)
    {      
      base.WndProc(ref m);

      if (m.Msg == welcome_page.VistaGlassEffect.VistaApi.WM_NCHITTEST // if this is a click
        && m.Result.ToInt32() == welcome_page.VistaGlassEffect.VistaApi.HTCLIENT // ...and it is on the client
        && this.IsOnGlass(m.LParam.ToInt32())) // ...and specifically in the glass area
      {
        m.Result = new IntPtr(welcome_page.VistaGlassEffect.VistaApi.HTCAPTION); // lie and say they clicked on the title bar
      }
    }

    private bool IsOnGlass(int lParam)
    {
      // sanity check
      if (!this.IsGlassEnabled())
      {
        return false;
      }

      // get screen coordinates
      int x = (lParam << 16) >> 16; // lo order word
      int y =  lParam        >> 16; // hi order word

      // translate screen coordinates to client area
      Point p = this.PointToClient(new Point(x, y));

      // work out if point clicked is on glass
      if (topRect.Contains(p) || lefRect.Contains(p) || rigRect.Contains(p) || botRect.Contains(p))
      {
        return true;
      }

      return false;
    }
    void buttn()
    {

    }
        private void Form2_Load(object sender, EventArgs e)
        {         
           
            int width = panel1.Width;
            int height = panel1.Height;
            System.Uri u = new Uri(@"F:\Documents\Viswa Teja\Documents\C2\teja.avi");
            video = Video.FromUrl(u);
            video.Owner = panel1;
            video.Play();
            panel1.Size = new Size(width, height);
            //this.apply();
            
            
              
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
                    }       
        


    }
}
Please Kindly HELP ME

Answer 1

You'll have to find another way around this.  XP doesn't support the glass effect. 

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