Question

我正在开发一个程序来获取高级截图。但我遇到了一个错误，我希望有人可以帮助我。

我可以使用以下代码制作屏幕截图：

       // The screenshot will be stored in this bitmap.
    Bitmap capture = new Bitmap(screenBounds.Width, screenBounds.Height);

    // The code below takes the screenshot and
    // saves it in "capture" bitmap.
    g = Graphics.FromImage(capture);
    g.CopyFromScreen(Point.Empty, Point.Empty, screenBounds);

    // This code assigns the screenshot
    // to the Picturebox so that we can view it
    pictureBox1.Image = capture;
    pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;

    // The code below make the form visible again, enables the "Save" button and stops the timer.
    this.Show();
    button2.Enabled = true;
    timer1.Stop();

在图片框上绘图：

        color = new SolidBrush(Color.Black);
        Graphics g = pictureBox1.CreateGraphics();
        g.FillEllipse(color, e.X, e.Y, 10, 10);
        g.Dispose();

问题：我只能保存截图，而不是图纸。
我希望有人可以帮助

Answer 1

不要使用CreateGraphics() - 这是一张临时图纸。使用您的捕获图像：

using (Graphics g = Graphics.FromImage(capture)) {
  g.FillEllipse(color, e.X, e.Y, 10, 10);
}

在Picturebox上绘制图像并保存

1 个答案: