C# WinForm实现粘贴图片到PictureBox及复制PictureBox中的图片

本程序功能需要 PastePicture.dll 文件的支持，下载地址为：http://download.csdn.net/detail/jsjyyjs07/8907405

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();

        ///

        /// 监视Windows消息
        /// 重载WndProc方法，用于实现热键响应
        ///

        ///
        [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：

///

        /// 注册快捷键Ctrl+C，Ctrl+V
        ///

        /// 窗体
        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);
        }

        ///

        /// 释放快捷键Ctrl+C，Ctrl+V
        ///

        /// 窗体
        public void UnregisterShortcuts(Form form)
        {
            //释放Ctrl+C快捷键
            UnsafeNativeMethods.UnregisterHotKey(form.Handle, 103);
            //释放Ctrl+V快捷键
            UnsafeNativeMethods.UnregisterHotKey(form.Handle, 104);
        }

本程序功能实现很简单，大家可以尝试去自己写 PastePicture.dll中的代码，可以从本文章开始的地方下载该dll文件 进行反编译查看里面的代码。