DesktopMaskot.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DesktopMaskot2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string path = @"C:\Users\User\Pictures\4234442.png";
            show(path);
        }
        private void show(string path)
        {
            this.FormBorderStyle = FormBorderStyle.None;
            size_change(path);
            this.BackgroundImage = Image.FromFile(path);
            this.TransparencyKey = Color.Black;
        }
        private void size_change(string path)
        {
            System.Drawing.Bitmap bmpSrc = new System.Drawing.Bitmap(path);
            int width = bmpSrc.Width;
            int height = bmpSrc.Height;
            this.Size = new Size(width, height);
        }
        private Point lastMousePosition;
        private bool mouseCapture;

        private void Form1_MouseDown(object sender,MouseEventArgs e)
        {
            if(e.Button != MouseButtons.Left)
            {
                return;
            }
            this.lastMousePosition = Control.MousePosition;
            this.mouseCapture = true;
        }
        private void Form1_MouseMove(object sender,MouseEventArgs e)
        {
            if(this.mouseCapture == false)
            {
                return;
            }
            Point mp = Control.MousePosition;

            int offsetX = mp.X - this.lastMousePosition.X;
            int offsetY = mp.Y - this.lastMousePosition.Y;

            this.Location = new Point(this.Left + offsetX, this.Top + offsetY);

            this.lastMousePosition = mp;
        }
        private void Form1_MouseUp(object sender,MouseEventArgs e)
        {
            if(e.Button != MouseButtons.Left)
            {
                return;
            }
            this.mouseCapture = false;
        }
        private void Form1_MouseCaptureChanged(object sender,EventArgs e)
        {
            if(this.mouseCapture == true && this.Capture == false)
            {
                this.mouseCapture = false;
            }
        }
        private void Form1_MouseClick(object sender,MouseEventArgs e)
        {
            string wave_path = @"C:\Users\User\Documents\w\testty.wav";
            PlaySound(wave_path);
        }
        private System.Media.SoundPlayer player = null;

        private void PlaySound(string waveFile)
        {
            if (player != null)
                StopSound();
            player = new System.Media.SoundPlayer(waveFile);
            player.Play();
        }
        private void StopSound()
        {
            if(player != null)
            {
                player.Stop();
                player.Dispose();
                player = null;
            }
        }
    }
}