可折叠菜单，类似于WindowsXP文件夹左侧和QQ面版

C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\bin\Debug\FoldMenu.exe C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\bin\Debug\FoldMenu.pdb C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\ResolveAssemblyReference.cache C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\FoldMenu.Form1.resources C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\FoldMenu.Properties.Resources.resources C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\FoldMenu.csproj.GenerateResource.Cache C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\FoldMenu.exe C:\Documents and Settings\Administrator\桌面\FoldMenu\FoldMenu\obj\Debug\FoldMenu.pdb C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\FoldMenu.exe C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\FoldMenu.pdb C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\bin\Debug\FoldMenu.exe C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\bin\Debug\FoldMenu.pdb C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\ResolveAssemblyReference.cache C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\FoldMenu.Form1.resources C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\FoldMenu.Properties.Resources.resources C:\Documents and Settings\Administrator\桌面\复件 FoldMenu\FoldMenu\obj\Debug\FoldMenu.csproj.GenerateResource.Cache