ErrorForm.cs

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

namespace SMSBoomGUI
{
    public partial class ErrorForm : Form
    {
        public ErrorForm()
        {
            InitializeComponent();
        }

        #region 绘制圆角窗体
        private void SetWindowRegion()
        {
            GraphicsPath path = new GraphicsPath();
            Rectangle rect = new Rectangle(0, 0, this.Width, this.Height);
            path = getRoundRectPath(rect, 50);
            this.Region = new Region(path);
        }
        private GraphicsPath getRoundRectPath(Rectangle rect, int radius)
        {
            GraphicsPath path = new GraphicsPath();
            Rectangle arcRect = new Rectangle(rect.Location, new Size(radius, radius));
            //左上角
            path.AddArc(arcRect, 180, 90);//从180度开始，顺时针,滑过90度
            //右上角
            arcRect.X = rect.Right - radius;
            path.AddArc(arcRect, 270, 90); //
            //右下角
            arcRect.Y = rect.Bottom - radius;
            path.AddArc(arcRect, 0, 90);
            //左下角
            arcRect.X = rect.Left;
            path.AddArc(arcRect, 90, 90);
            path.CloseFigure();//闭合曲线
            return path;
        }

        private void ErrorForm_Resize(object sender, EventArgs e)
        {
            SetWindowRegion();
        }

        #endregion

        #region 绘制程序Panel
        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            panel1.BackColor = Color.FromArgb(150, 131, 175, 200);//ARGB，第一个为调节不透明度

            ControlPaint.DrawBorder(e.Graphics,
                                        panel1.ClientRectangle,
                                        Color.White,
                                        1,
                                        ButtonBorderStyle.Solid,
                                        Color.White,
                                        1,
                                        ButtonBorderStyle.Solid,
                                        Color.White,
                                        1,
                                        ButtonBorderStyle.Solid,
                                        Color.White,
                                        1,
                                        ButtonBorderStyle.Solid);
        }

        #endregion

        #region 鼠标事件
        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

        bool beginMove = false;//初始化鼠标位置
        int currentXPosition;
        int currentYPosition;

        private void panel1_MouseDown_1(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                beginMove = true;
                currentXPosition = MousePosition.X;//鼠标的x坐标为当前窗体左上角x坐标
                currentYPosition = MousePosition.Y;//鼠标的y坐标为当前窗体左上角y坐标
            }
        }

        private void panel1_MouseMove_1(object sender, MouseEventArgs e)
        {
            if (beginMove)
            {
                this.Left += MousePosition.X - currentXPosition;//根据鼠标x坐标确定窗体的左边坐标x
                this.Top += MousePosition.Y - currentYPosition;//根据鼠标的y坐标窗体的顶部，即Y坐标
                currentXPosition = MousePosition.X;
                currentYPosition = MousePosition.Y;
            }
        }

        private void panel1_MouseUp_1(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                currentXPosition = 0; //设置初始状态
                currentYPosition = 0;
                beginMove = false;
            }
        }

        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            pictureBox1.BackColor = Color.Red;
        }

        private void pictureBox1_MouseLeave(object sender, EventArgs e)
        {
            pictureBox1.BackColor = Color.Transparent;
        }

        #endregion


        private void ErrorForm_Load(object sender, EventArgs e)
        {

        }

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

        private void btn_cancle_Click_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
            this.Close();
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            Close();
        }

    }
}