C# Desktop Image Display Program - 바탕화면 이미지 출력 프로그램

2021.11.29 - [C#] - C# Desktop Capture and Image Display Program - 바탕화면 캡쳐 & 이미지 출력 프로그램

 

바탕화면에 이미지를 출력하는 크리스마스 프로그램 예제.

 

폼, 버튼, 링크 레이블등을 적당히 배치하고 리소스를 등록한다.

 

Images.zip

2.28MB

폼에는

FormBorderStyle - None

ShowInTaskBar - False

TopMost - True

등의 조건을 준다.

 

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;
 
using System.Runtime.InteropServices;
using System.Media;
 
namespace Christmas
{
    public partial class Form1 : Form
    {
        [DllImport("User32.dll")]
        public static extern IntPtr GetDC(IntPtr hwnd);
 
        [DllImport("user32.dll")]
        public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
 
        // 바탕화면 refresh
        [DllImport("Shell32.dll")]
        private static extern int SHChangeNotify(int eventId, int flags, IntPtr item1, IntPtr item2);
 
        int screenWidth;
        int screenHeight;
 
        IntPtr desktopPtr;
 
        // 이미지 파일은 화면과 해상도가 달라서 작거나 크게 표시될 수 있다.
        // Image로 받지 말고 비트맵으로 변환해 사용하면 된다.
        Bitmap tree;                
        Bitmap leftTop;
        Bitmap rightTop;
        Bitmap rightDeer;
        Bitmap cane;
        Bitmap bulb;
        Bitmap snowMan;
        Bitmap merry;
 
        public Form1()
        {
            InitializeComponent();
 
            screenWidth = Screen.PrimaryScreen.Bounds.Width;
            screenHeight = Screen.PrimaryScreen.Bounds.Height;
 
            desktopPtr = GetDC(IntPtr.Zero);
 
            tree = new Bitmap(Properties.Resources.tree1);
            rightDeer = new Bitmap(Properties.Resources.RightDeer);
            leftTop = new Bitmap(Properties.Resources.LeftTop);
            rightTop = new Bitmap(Properties.Resources.RightTop);
            cane = new Bitmap(Properties.Resources.cane);
            bulb = new Bitmap(Properties.Resources.bulb);
            snowMan = new Bitmap(Properties.Resources.BottomSnowMan);
            merry = new Bitmap(Properties.Resources.Merry);
        }
 
        ~Form1()
        {
            ReleaseDC(IntPtr.Zero, desktopPtr);
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            // 폼의 시작 위치를 생성자에서 설정하면 크기가 줄어드는 등 비정상적으로 동작한다.
            StartPosition = FormStartPosition.Manual;
            Location = new Point(screenWidth - Size.Width, screenHeight - Size.Height - 40);
 
            // Gets or sets a value indicating whether the form will receive key events before the event is passed
            // to the control that has focus.
            // true if the form will receive all key events; false if the currently selected control on the form
            // receives key events. The default is false.
            // 키가 눌렸을때 포커스를 갖고 있는 컨트롤보다 폼이 먼저 키 이벤트를 받을 수 있게 한다. 단축키 지정을 위해.
            KeyPreview = true;
 
            // 타이머를 작동시키면 반투명 이미지 부분이 계속 진해진다. 필요하면 작동시키자.
            //timer1.Enabled = true;
 
            SoundPlayer p = new SoundPlayer();
            p.Stream = Properties.Resources.Song;
            p.Play();
            
            using (Graphics g = Graphics.FromHdc(desktopPtr))
            {
                g.DrawImage(bulb, screenWidth - rightDeer.Width - bulb.Width, 0);
                g.DrawImage(leftTop, 0, 0);
                g.DrawImage(rightTop, screenWidth - rightTop.Width, 0);
                g.DrawImage(rightDeer, screenWidth - rightDeer.Width, (screenHeight - rightDeer.Height) / 2);
                g.DrawImage(cane, cane.Width / 4, (screenHeight - cane.Height) / 2);                
                g.DrawImage(snowMan, 0, screenHeight - snowMan.Height);
                g.DrawImage(merry, screenWidth - merry.Width, screenHeight - merry.Height - 40);
                g.DrawImage(tree, (screenWidth - tree.Width) / 2, 40);
            }
        }
 
        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Escape:
 
                case Keys.Q:
                    Close();
                    break;
 
                case Keys.R:
                    Reload();
                    break;
 
                case Keys.H:
                    System.Diagnostics.Process.Start("https://s-engineer.tistory.com/");
                    break;
 
                default:
                    break;
            }
        }
        
        private void button1_Click(object sender, EventArgs e)
        {
            Close();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            Reload();
        }
        private void Reload()
        {
            using (Graphics g = Graphics.FromHdc(desktopPtr))
            {
                g.DrawImage(bulb, screenWidth - rightDeer.Width - bulb.Width, 0);
                g.DrawImage(leftTop, 0, 0);
                g.DrawImage(rightTop, screenWidth - rightTop.Width, 0);
                g.DrawImage(rightDeer, screenWidth - rightDeer.Width, (screenHeight - rightDeer.Height) / 2);
                g.DrawImage(cane, cane.Width / 4, (screenHeight - cane.Height) / 2);
                g.DrawImage(snowMan, 0, screenHeight - snowMan.Height);
                g.DrawImage(merry, screenWidth - merry.Width, screenHeight - merry.Height - 40);
                g.DrawImage(tree, (screenWidth - tree.Width) / 2, 40);
            }
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            using (Graphics g = Graphics.FromHdc(desktopPtr))
            {
                g.DrawImage(bulb, screenWidth - rightDeer.Width - bulb.Width, 0);
                g.DrawImage(leftTop, 0, 0);
                g.DrawImage(rightTop, screenWidth - rightTop.Width, 0);
                g.DrawImage(rightDeer, screenWidth - rightDeer.Width, (screenHeight - rightDeer.Height) / 2);
                g.DrawImage(cane, cane.Width / 4, (screenHeight - cane.Height) / 2);
                g.DrawImage(snowMan, 0, screenHeight - snowMan.Height);
                g.DrawImage(merry, screenWidth - merry.Width, screenHeight - merry.Height - 40);
                g.DrawImage(tree, (screenWidth - tree.Width) / 2, 40);
            }
        }
 
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            // 바탕화면 refresh
            SHChangeNotify(0x8000000, 0x1000, IntPtr.Zero, IntPtr.Zero);
        }
 
        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            linkLabel1.LinkVisited = true;
            System.Diagnostics.Process.Start("https://s-engineer.tistory.com/");
        }
    }
}

 

소스를 입력하고 빌드한다.

 

실행하면 바탕화면에 이미지가 표시된다.