大神，如图，如何在半透明pictruebox窗口中开个透明小框框，如何套在另一个pictruebox控件上

[cyclss]

大神，如图，如何在半透明pictruebox窗口中开个透明小框框，如何套在另一个pictruebox控件上，请教思路与代码实现

[assky124]

直接绘图不行？ 换WPF不行么

[xuzuning]

pictruebox 放到 pictruebox 中，指定里面的 Parent 为外层的 pictruebox 则里面的 pictruebox 对于 外面的 pictruebox 就是透明的 C# 的控件只提供到这一步，如有再多的表现，需要自己写代码实现（比如wpf）

[desperaso]

临时写的，有点繁琐，自己修改。原理就是将图像部分设置为透明

/// <summary>
        /// 图像挖洞
        /// </summary>
        /// <param name="_x">透明位置x</param>
        /// <param name="_y">透明位置x</param>
        /// <param name="_width">透明宽度</param>
        /// <param name="_height">透明高度</param>
        /// <param name="src">图像</param>
        /// <param name="num">图像整体透明度</param>
        /// <param name="trans">挖洞部分透明度</param>
        /// <returns></returns>
        public Bitmap potholing (int _x,int _y,int _width, int _height, Bitmap src, int num, int trans)
        {
            try
            {
                int w = src.Width;
                int h = src.Height;
                Bitmap dstBitmap = new Bitmap(src.Width, src.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                System.Drawing.Imaging.BitmapData srcData = src.LockBits(new Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                System.Drawing.Imaging.BitmapData dstData = dstBitmap.LockBits(new Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                unsafe
                {
                    byte* pIn = (byte*)srcData.Scan0.ToPointer();
                    byte* pOut = (byte*)dstData.Scan0.ToPointer();
                    byte* p;
                    int stride = srcData.Stride;
                    int r, g, b;
                    for (int y = 0; y < h; y++)
                    {
                        for (int x = 0; x < w; x++)
                        {
                            p = pIn;
                            b = pIn[0];
                            g = pIn[1];
                            r = pIn[2];
                            pOut[1] = (byte)g;
                            pOut[2] = (byte)r;

                            if ((y > _y) && (y < _height) && (x > _x) && (x < _height))
                            {
                                pOut[3] = (byte)trans;
                            } else pOut[3] = (byte)num;

                            pOut[0] = (byte)b;
                            pIn += 4;
                            pOut += 4;
                        }
                        pIn += srcData.Stride - w * 4;
                        pOut += srcData.Stride - w * 4;
                    }
                    src.UnlockBits(srcData);
                    dstBitmap.UnlockBits(dstData);
                    return dstBitmap;
                }
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message.ToString());
                return null;
            }
        }
       
        public Form1()
        {
            InitializeComponent();
            pictureBox1.Parent = pictureBox2;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Bitmap _bmp = new Bitmap(@"e.png");
            _bmp = potholing(20,20,190,190,_bmp, 255,0);

            pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
            pictureBox1.Image = _bmp;

        }
    }

[desperaso]

忘了说明，pictureBox1.BackColor = Color.Transparent; pictureBox1背景要透明

[guijianchouperfect]

图像处理与识别，Halcon了解下。