UU'S T&T

MSN Live Messenger的“正在收听的内容”如何自定义？

WMP和MSN Live Messenger配合着让其他联系人看到自己的“正在收听的内容”这个功能，相信大家都用过。我一直想把自己想说的话加进取，这样就可以滚动了。

怎么实现呢？

其实用到的是这个WM_COPYDATA

贴一段C#的代码，大家可以加到自己的项目中：

Win32.cs

using System;
using System.Runtime.InteropServices;
namespace MSN.Win32
{
    /// <summary>
    /// Win32API提供交互
    /// </summary>
    public class Win32API 
    {
        public const int WM_COMMAND = 0x111;
        public const short WM_COPYDATA = 74;
        

        public struct COPYDATASTRUCT
        {
            public int dwData;
            public int cbData;
            public int lpData;
        }
        /// <summary>
        /// 获得指定对象的内存地址
        /// </summary>
        /// <param name="e">对象</param>
        /// <returns>内存地址</returns>
        public static int GetObjectMemoryAddress(object e)
        {
            GCHandle GC = GCHandle.Alloc(e,GCHandleType.Pinned);
            int gc = GC.AddrOfPinnedObject().ToInt32();
            GC.Free();
            return gc;
        }
        
        public static int ChangeMSNSong(bool enable, string message,string category)
        {
            int iHandle=0;
            int iReturn=-1;
    
            string msnMsg="\\0" + category + "\\0" + (enable ? "1" : "0") + "\\0{0}\\0" + message + "\\0\\0\\0\\0\0";
            //Find the MSN
            iHandle=Win32API.FindWindow("MsnMsgrUIManager",string.Empty);
            
            Win32API.COPYDATASTRUCT copydatastruct = new MSN.Win32.Win32API.COPYDATASTRUCT();
            copydatastruct.dwData=0x0547;
            copydatastruct.cbData=msnMsg.Length * 2;
            copydatastruct.lpData=Win32API.GetObjectMemoryAddress(msnMsg);
            
            if(iHandle>0)
                iReturn = Win32API.SendMessage(iHandle,Win32API.WM_COPYDATA,0,Win32API.GetObjectMemoryAddress(copydatastruct));
            
        
            return iReturn;
        }

        public enum MSN_CATAGROY
        {
            Games,
            Music

        }

        public Win32API()
        {
            
        }
        [DllImport("User32.dll")]
        public static extern int FindWindow(string strClassName,
                                                string strWindowName);
        [DllImport("User32.dll")]
        public static extern int FindWindowEx(int hwndParent,
                                                int hwndChildAfter, 
                                                string strClassName, 
                                                string strWindowName);

        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(
            int hWnd,               // handle to destination window
            int Msg,                // message
            int wParam,             // first message parameter
            [MarshalAs(UnmanagedType.LPStr)] string lParam); 
        // second message parameter

        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(
            int hWnd,               // handle to destination window
            int Msg,                // message
            int wParam,             // first message parameter
            int lParam);            // second message parameter
    }
}

调用的时候直接用这个方式：

Win32API.ChangeMSNSong(true,
                ((DataSource)this.dataGrid1.DataSource).Tables[0].Rows[i]["信息"].ToString(),
                ((DataSource)this.dataGrid1.DataSource).Tables[0].Rows[i]["类别"].ToString());