Unit 4 C# Pen & ContextMenu

Unit 4 C# Pen & ContextMenu

結構=資料巨集

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Paint1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        Pen pe0, pe1; //3-1.要先宣告pe0,pe1

        //5-1.宣告5000個元素的整數陣列(表訊號強度)(靜態陣列)

        int[] s = new int[5000]; //5-1. 型態(配置一個大樓有5000個房間)

        Random rd = new Random(); //5-2.設定亂數物件

        private void Form1_Load(object sender, EventArgs e)

        {

            this.Width = 960; this.Height = 720; //1.視窗寬高

            //2.定義線型物件(色彩粗細)pe0

            pe0 = new Pen(Color.Blue, 2);

            //3.指定線型物件屬性(如起始端點,結束端點樣式,...)

            pe0.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;

            pe1 = new Pen(Color.BlueViolet, 1);

            for (int i = 0; i < 5000; i++)//5跑for迴圈

                s[i] = rd.Next(100, 350); //5-3. 100~350之間的整數亂數

        }

        private void Form1_Paint(object sender, PaintEventArgs e)

        {

            this.DoubleBuffered = true;//4.避免閃爍

            //3-2畫線DrawLine(線型, x0,y0,x1,y1);或

            //畫線DrawLine(線型,new Point (x0,y0), new Point(x1,y1));

            e.Graphics.DrawLine(pe0, 50, 400, 600, 400);//第一條線

            e.Graphics.DrawLine(pe0, new Point(50, 400),

                new Point(50, 50));

            Point[] pt1 = new Point[500];//5-4. 500個點

            for (int i = 0; i < 500; i++)

            {

                pt1[i].X = i + 100;

                pt1[i].Y = s[i];

            }

            e.Graphics.DrawLines(pe1, pt1);

        }

    }

}

課堂練習: 讓畫布每秒往左邊移動

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Paint1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        Pen pe0, pe1; //3-1.要先宣告pe0,pe1

        //5-1.宣告5000個元素的整數陣列(表訊號強度)(靜態陣列)

        int[] s = new int[5000]; //5-1. 型態(配置一個大樓有5000個房間)

        Random rd = new Random(); //5-2.設定亂數物件

        Point[] pt1 = new Point[500];//5-4. 500個點

        int k = 0;

        private void Form1_Load(object sender, EventArgs e)

        {

            this.Width = 960; this.Height = 720; //1.視窗寬高

            //2.定義線型物件(色彩粗細)pe0

            pe0 = new Pen(Color.Blue, 2);

            //3.指定線型物件屬性(如起始端點,結束端點樣式,...)

            pe0.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;

            pe1 = new Pen(Color.BlueViolet, 1);

            for (int i = 0; i < 5000; i++)//5.跑for迴圈

                s[i] = rd.Next(100, 350); //5-3. 100~350之間的整數亂數

        }

        private void Form1_Paint(object sender, PaintEventArgs e)

        {

            this.DoubleBuffered = true;//4.避免閃爍

            //3-2.畫線DrawLine(線型, x0,y0,x1,y1);或

            //畫線DrawLine(線型,new Point (x0,y0), new Point(x1,y1));

            e.Graphics.DrawLine(pe0, 50, 400, 600, 400);//第一條線

            e.Graphics.DrawLine(pe0, new Point(50, 400),

                new Point(50, 50));

            e.Graphics.DrawLines(pe1, pt1);

        }

       

        private void timer1_Tick(object sender, EventArgs e)

        {

             for (int i = 0; i < 500; i++)

            {

                pt1[i].X = i + 100;

                pt1[i].Y = s[i+k];//讓畫布每秒往左邊移動

               

            }

             k++;

             this.Refresh();//6-1要求畫布重畫

        }

    }

}