C#编程音乐播放器和桌面背景设置

指定文件夹后，使文件夹中的图自自动切换为电脑桌面，并开始播放指定的音乐文件，实现在欣赏美丽背景的同时，倾听动听的音乐，而且还可以设置桌面背景的样式，如平铺，居中或拉伸等。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using Microsoft.Win32;
namespace MusicViewDesk
{
    class baseClass
    {
        #region 读写INI文件
        [DllImport（“kernel32“）]
        private static extern long WritePrivateProfileString（string section string key string val string filePath）;
        [DllImport（“kernel32“）]
        private static extern int GetPrivateProfileString（string section string key string def StringBuilder retval int size string filePath）;
        [DllImport（“user32“）]
        public static extern int SendMessageA（int hWndint Msgint wParamint lParam）;
        private const int HWND_BROADCAST = 0xffff;
        private const int WM_SYSCOMMAND = 0x112;
        pr

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-04-22 08:59  MusicViewDesk\
     目录           0  2017-04-22 08:58  MusicViewDesk\Backup\
     目录           0  2017-04-22 08:58  MusicViewDesk\Backup\MusicViewDesk\
     文件       16695  2010-09-08 19:55  MusicViewDesk\Backup\MusicViewDesk\Frm_Main.Designer.cs
     文件        8712  2010-09-08 19:55  MusicViewDesk\Backup\MusicViewDesk\Frm_Main.cs
     文件        6903  2010-09-08 19:55  MusicViewDesk\Backup\MusicViewDesk\Frm_Main.resx
     文件       16136  2010-08-26 14:06  MusicViewDesk\Backup\MusicViewDesk\Frm_Set.Designer.cs
     文件        3762  2010-08-26 14:06  MusicViewDesk\Backup\MusicViewDesk\Frm_Set.cs
     文件       13453  2008-12-15 15:01  MusicViewDesk\Backup\MusicViewDesk\Frm_Set.resx
     文件        5185  2010-08-26 14:06  MusicViewDesk\Backup\MusicViewDesk\MusicViewDesk.csproj
     文件         497  2010-08-26 14:05  MusicViewDesk\Backup\MusicViewDesk\Program.cs
     目录           0  2017-04-22 08:58  MusicViewDesk\Backup\MusicViewDesk\Properties\
     文件        1389  2008-12-13 11:31  MusicViewDesk\Backup\MusicViewDesk\Properties\AssemblyInfo.cs
     文件        2876  2008-12-13 10:51  MusicViewDesk\Backup\MusicViewDesk\Properties\Resources.Designer.cs
     文件        5612  2008-12-13 10:51  MusicViewDesk\Backup\MusicViewDesk\Properties\Resources.resx
     文件        1098  2008-12-13 10:51  MusicViewDesk\Backup\MusicViewDesk\Properties\Settings.Designer.cs
     文件         249  2008-12-13 10:51  MusicViewDesk\Backup\MusicViewDesk\Properties\Settings.settings
     文件         134  2010-12-13 10:50  MusicViewDesk\Backup\MusicViewDesk\Setup.ini
     文件        3110  2009-01-04 14:04  MusicViewDesk\Backup\MusicViewDesk\baseClass.cs
     文件        3093  2008-12-13 14:44  MusicViewDesk\Backup\MusicViewDesk\图标 （100）.png
     文件        2862  2008-12-13 14:39  MusicViewDesk\Backup\MusicViewDesk\图标 （18）.ico
     文件        2862  2008-12-13 14:41  MusicViewDesk\Backup\MusicViewDesk\图标 （22）.ico
     文件       15086  2008-12-15 15:29  MusicViewDesk\Backup\MusicViewDesk\图标 （6）.ico
     文件         929  2008-12-13 10:51  MusicViewDesk\Backup\MusicViewDesk.sln
     文件       15872  2010-09-09 13:53  MusicViewDesk\Backup\MusicViewDesk.suo
     目录           0  2017-03-09 09:01  MusicViewDesk\MusicViewDesk\
     文件       16695  2010-09-08 19:55  MusicViewDesk\MusicViewDesk\Frm_Main.Designer.cs
     文件        8712  2010-09-08 19:55  MusicViewDesk\MusicViewDesk\Frm_Main.cs
     文件        6903  2010-09-08 19:55  MusicViewDesk\MusicViewDesk\Frm_Main.resx
     文件       16136  2010-08-26 14:06  MusicViewDesk\MusicViewDesk\Frm_Set.Designer.cs
     文件        3762  2010-08-26 14:06  MusicViewDesk\MusicViewDesk\Frm_Set.cs
............此处省略52个文件信息