本程序功能需要 PastePicture.dll 文件的支持，下载地址为：

1.程序设计界面如下图：

操作方式为：按住快捷键Ctrl+V，鼠标点击一个PictureBox 完成图片的粘贴

按住快捷键Ctrl+C，，鼠标点击一个PictureBox完成图片的复制

2.主要功能性代码如下：

using PastePicture;

ClipboardImage cImg = new ClipboardImage();

/// <summary>
        /// 监视Windows消息
        /// 重载WndProc方法，用于实现热键响应
        /// </summary>
        /// <param name="m"></param>
        [SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
        protected override void WndProc(ref Message m)
        {
            const int WM_HOTKEY = 0x0312;

//按快捷键
            switch (m.Msg)
            {
                case WM_HOTKEY:
                    switch (m.WParam.ToInt32())
                    {
                        case 103:
                            //复制图片
                            cImg.CopyPictureToPictureBox(pictureBox, pictureBox1, pictureBox2, pictureBox3);
                            break;
                        case 104:
                            //粘贴图片
                            cImg.PastePictureToPictureBox(pictureBox, pictureBox1, pictureBox2, pictureBox3);
                            break;

}
                    break;
            }
            base.WndProc(ref m);
        }

private void Form1_Activated(object sender, EventArgs e)
        {
            //注册快捷键 Ctrl+C，Ctrl+V
            cImg.RegisterShortcuts(this);
        }

private void Main_FormClosing(object sender, FormClosingEventArgs e)
        {
            //释放快捷键 Ctrl+C，Ctrl+V
            cImg.UnregisterShortcuts(this);
        }

附  PastePicture.dll 注册快捷键代码如下：

/// <summary>
        /// 注册快捷键Ctrl+C，Ctrl+V
        /// </summary>
        /// <param name="form">窗体</param>
        public void RegisterShortcuts(Form form)
        {
            //注册Ctrl+C快捷键
            UnsafeNativeMethods.RegisterHotKey(form.Handle, 103, 2, Keys.C);
            //注册Ctrl+V快捷键
            UnsafeNativeMethods.RegisterHotKey(form.Handle, 104, 2, Keys.V);
        }