C#Graphics畫圖

標籤：

 public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            Graphics g = this.CreateGraphics();//建立GDI對像            //建立畫筆(顏色)            Pen npen = new Pen(Brushes.Red);            //建立兩個點            Point n1 = new Point(20, 20);            Point n2 = new Point(255, 255);            g.DrawLine(npen, n1, n2);        }        private void Form1_Paint(object sender, PaintEventArgs e)        {            Graphics g = this.CreateGraphics();//建立GDI對像            //建立畫筆(顏色)            Pen npen = new Pen(Brushes.Red);            //建立兩個點            Point n1 = new Point(20, 20);            Point n2 = new Point(255, 255);            g.DrawLine(npen, n1, n2);        }        private void button2_Click(object sender, EventArgs e)        {            Graphics ng = this.CreateGraphics();            //建立畫筆            Pen npen = new Pen(Brushes.Red);            Size sz=new System.Drawing.Size(100,100);            Rectangle res = new Rectangle(new Point(50, 50), sz);            ng.DrawRectangle(npen, res);        }        private void button3_Click(object sender, EventArgs e)        {            Graphics g = this.CreateGraphics();            Pen npen = new Pen(Brushes.Blue);            Size sz = new System.Drawing.Size(180, 180);            Rectangle rec = new Rectangle(new Point(150, 150), sz);            g.DrawPie(npen, rec, -50, -50);        }        private void button4_Click(object sender, EventArgs e)        {            Graphics g = this.CreateGraphics();            Pen npen = new Pen(Brushes.Blue);            g.DrawString("我是中國人", new Font("宋體", 20, FontStyle.Bold), Brushes.Blue, new PointF(29, 29));        }

 

C#Graphics畫圖