C# 剪取工具winform

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做了好幾天，對象比較多，弄的都是亂的，最後還是一個個試出來的。

Bitmap

Graphics

FromImage

Pen

Rectangle

DrawRectangle

真的混亂，看了好幾天，才明白參數之間的關係。

下載     pan.baidu.com/s/1c2CMRhY

 

思路：form1 就是介面，全屏。form2 就地區

Form1代碼

int i = 0;        int w = Screen.PrimaryScreen.Bounds.Width;        int h = Screen.PrimaryScreen.Bounds.Height;        private void button1_Click(object sender, EventArgs e)        {            WindowState = FormWindowState.Minimized;            Thread.Sleep(100);            i += 1;            Bitmap b = new Bitmap(w,h);            Graphics g = Graphics.FromImage(b);            g.CopyFromScreen(0,0,0,0,new Size(w,h));            b.Save("C:/Users/Administrator/Desktop/小王子"+i+".jpg");            WindowState = FormWindowState.Normal;            Clipboard.SetImage(b);            this.Cursor = Cursors.Default;        }        private void button3_Click(object sender, EventArgs e)        {            System.Diagnostics.Process.Start("C:/Users/Administrator/Desktop");            TopMost = false;            this.Cursor = Cursors.Default;        }        private void button2_Click(object sender, EventArgs e)        {            this.Hide();            Form2 f2 = new Form2();            f2.Show();        }

 

Form2 代碼

 

int i = 0;        Bitmap bit;        Bitmap bit2;        Bitmap copy;        int x;        int y;        int xx;        int yy;        Pen pen = new Pen(Color.Red,2);        Rectangle rect = new Rectangle();        Graphics g2;        private void Form2_Load(object sender, EventArgs e)        {            i++;            //Opacity = 0.5;            WindowState = FormWindowState.Minimized;            FormBorderStyle = FormBorderStyle.None;            this.Cursor = Cursors.Cross;            int w = Screen.PrimaryScreen.Bounds.Width;            int h = Screen.PrimaryScreen.Bounds.Height;            bit = new Bitmap(w, h);//擷取案頭圖            Graphics g = Graphics.FromImage(bit);//把圖畫出來            g.CopyFromScreen(0, 0, 0, 0, new Size(w, h));            pictureBox1.Image = bit;            bit.Save("C:/Users/Administrator/Desktop/地區" + i + ".jpg");            WindowState = FormWindowState.Maximized;        }        private void pictureBox1_MouseClick(object sender, MouseEventArgs e)        {            if(e.Button == MouseButtons.Right)            {                this.Hide();                Form1 f1 = new Form1();                f1.Show();            }        }        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)        {            x = Math.Abs(e.X);            y = Math.Abs(e.Y);        }        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)        {            if(e.Button == MouseButtons.Left)            {                xx = Math.Abs(e.X);                yy = Math.Abs(e.Y);                Graphics g = pictureBox1.CreateGraphics();                rect = new Rectangle(x, y, xx - x, yy - y);                Refresh();                g.DrawRectangle(pen, rect);                            }        }        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)        {            try            {                copy = (Bitmap)bit.Clone();                bit2 = new Bitmap(rect.Width, rect.Height);                g2 = Graphics.FromImage(bit2);                g2.DrawImage(copy, new Rectangle(0, 0, rect.Width, rect.Height), rect, GraphicsUnit.Pixel);                pictureBox1.Image = bit2;                bit2.Save("C:/Users/Administrator/Desktop/地區" + i + ".jpg");                Clipboard.SetImage(bit2);            }

 

C# 工具winform