Winform- 屏幕截屏

 

使用WINFORM来进行屏幕截图，试试这一串

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        private int intStartX = 0;
        private int intStartY = 0;
        private bool isMouseDraw = false;
        private Rectangle rectangle;

        public Form1()
        {
            //this.BackColor = Color.Gray;
            //this.Opacity = 0.5;
            //this.FormBorderStyle = FormBorderStyle.None;
            //this.WindowState = FormWindowState.Maximized;

            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            Bitmap myImage = new Bitmap(rectangle.Width, rectangle.Height);
            Graphics g = Graphics.FromImage(myImage);

            //g.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height));
            //g.CopyFromScreen(rectangle.X,rectangle.Y,(rectangle.X + rectangle.Width),
            //(rectangle.Y + rectangle.Height), new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height));

            g.CopyFromScreen(new Point(rectangle.X, rectangle.X), new Point(rectangle.X, rectangle.Y), new Size(rectangle.Width, rectangle.Height));

            myImage.Save(@"D:\x.jpg");
            g.Dispose();



        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            isMouseDraw = true;
            intStartX = e.X;
            intStartY = e.Y;
        }

        private void Form1_MouseMove(object sender, MouseEventArgs e)
        {
            if (isMouseDraw)
            {
                try
                {
                   
                    Graphics g = this.CreateGraphics();
                    //清空上次画下的痕迹
                    g.Clear(this.BackColor);
                    Brush brush = new SolidBrush(Color.Red);
                    Pen pen = new Pen(brush, 1);
                    pen.DashStyle = DashStyle.Solid;
                    rectangle = new Rectangle(intStartX > e.X ? e.X : intStartX, intStartY > e.Y ? e.Y : intStartY, Math.Abs(e.X - intStartX), Math.Abs(e.Y - intStartY));
                    g.DrawRectangle(pen, rectangle);
                    g.Dispose();
                }
                catch (Exception ex)
                {
                    ex.ToString();
                }
            }
        }

        private void Form1_MouseUp(object sender, MouseEventArgs e)
        {
            isMouseDraw = false;

            intStartX = 0;
            intStartY = 0;
        }
    }
}