screensaver/ScreenForm.cs

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace ScreenSaver
{
    public class ScreenForm : Form
    {
        protected Timer timer = null;

        protected Point startMousePos;
        protected int screenNo;

        public ScreenForm(int num)
        {
            this.AutoScaleBaseSize = new Size(1, 1);
            this.BackColor = Color.Black;
            this.BackgroundImageLayout = ImageLayout.Zoom;
            //this.Bounds = Screen.AllScreens[screenNo].Bounds;
            this.ClientSize = new Size(320, 240);
            this.FormBorderStyle = FormBorderStyle.None;
            this.Name = "ScreenSaverForm";
            this.StartPosition = FormStartPosition.Manual;
            this.Text = "Screen " + screenNo.ToString();
            this.TopMost = true;
            //this.WindowState = FormWindowState.Maximized;

            timer = new Timer();
            timer.Interval = 4000;
            timer.Tick += timer_Tick;
            timer.Enabled = true;

            this.screenNo = num;
        }

        //protected override void OnPaint(PaintEventArgs e)
        //{
        //    base.OnPaint(e);

        //    e.Graphics.DrawString(screenNo.ToString() + " " + this.Bounds.ToString(), this.Font, new SolidBrush(Color.White), new PointF(100, 100));
        //}

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            this.Bounds = Screen.AllScreens[screenNo].Bounds;

            Cursor.Hide();

            this.TopMost = true;
        }

        protected override void OnKeyDown(KeyEventArgs e) => this.Close();

        protected override void OnKeyPress(KeyPressEventArgs e) => this.Close();

        protected override void OnKeyUp(KeyEventArgs e) => this.Close();

        protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e) => this.Close();

        protected override void OnClosing(CancelEventArgs e) => Application.Exit();

        protected override void OnMouseMove(MouseEventArgs e)
        {
            //base.OnMouseMove(e);
            if (!startMousePos.IsEmpty)
            {
                if (startMousePos != new Point(e.X, e.Y))
                {
                    this.Close();
                }

                if (e.Clicks > 0)
                {
                    this.Close();
                }
            }

            this.startMousePos = new Point(e.X, e.Y);
        }

        protected override void OnMouseDoubleClick(MouseEventArgs e) => this.OnMouseMove(e);

        protected override void OnMouseClick(MouseEventArgs e) => this.OnMouseMove(e);

        protected override void OnMouseDown(MouseEventArgs e) => this.OnMouseMove(e);

        protected override void OnMouseUp(MouseEventArgs e) => this.OnMouseMove(e);

        protected override void OnMouseWheel(MouseEventArgs e) => this.OnMouseMove(e);

        private void timer_Tick(object sender, EventArgs e)
        {
            //throw new NotImplementedException();
        }

    }
}