windows消息滚动条
.................\TestA
.................\.....\Backup
.................\.....\......\CustomControls
.................\.....\......\..............\CustomControls.csproj
.................\.....\......\..............\CustomScrollbar.cs
.................\.....\......\..............\CustomScrollbar.resx
.................\.....\......\..............\Properties
.................\.....\......\..............\..........\AssemblyInfo.cs
.................\.....\......\..............\Resource.Designer.cs
.................\.....\......\..............\Resource.resx
.................\.....\......\..............\Resources
.................\.....\......\..............\.........\ThumbBottom.png
.................\.....\......\..............\.........\ThumbMiddle.png
.................\.....\......\..............\.........\ThumbSpanBottom.png
.................\.....\......\..............\.........\ThumbSpanTop.png
.................\.....\......\..............\.........\ThumbTop.png
.................\.....\......\..............\.........\downarrow.png
.................\.....\......\..............\.........\uparrow.png
.................\.....\......\TestApp
.................\.....\......\.......\Form1.Designer.cs
.................\.....\......\.......\Form1.cs
.................\.....\......\.......\Form1.resx
.................\.....\......\.......\Program.cs
.................\.....\......\.......\Properties
.................\.....\......\.......\..........\AssemblyInfo.cs
.................\.....\......\.......\..........\Resources.Designer.cs
.................\.....\......\.......\..........\Resources.resx
.................\.....\......\.......\..........\Settings.Designer.cs
.................\.....\......\.......\..........\Settings.settings
.................\.....\......\.......\TestApp.csproj
.................\.....\......\TestApp.sln
.................\.....\CustomControls
.................\.....\..............\CustomControls.csproj
.................\.....\..............\CustomControls.csproj.user
.................\.....\..............\CustomScrollbar.cs
.................\.....\..............\CustomScrollbar.resx
.................\.....\..............\Properties
.................\.....\..............\..........\AssemblyInfo.cs
.................\.....\..............\Resource.Designer.cs
.................\.....\..............\Resource.resx
.................\.....\..............\Resources
.................\.....\..............\.........\ThumbMiddle_enter.png
.................\.....\..............\.........\ThumbMiddle_leave.png
.................\.....\..............\.........\channel.png
.................\.....\..............\.........\downarrow_enter.png
.................\.....\..............\.........\downarrow_leave.png
.................\.....\..............\.........\uparrow_enter.png
.................\.....\..............\.........\uparrow_leave.png
.................\.....\..............\bin
.................\.....\..............\...\Debug
.................\.....\..............\...\.....\CustomControls.dll
.................\.....\..............\...\.....\CustomControls.pdb
.................\.....\..............\...\Release
.................\.....\..............\...\.......\CustomControls.dll
.................\.....\..............\...\.......\CustomControls.pdb
.................\.....\..............\obj
.................\.....\..............\...\Debug
.................\.....\..............\...\.....\CustomControls.CustomScrollbar.resources
.................\.....\..............\...\.....\CustomControls.Resource.resources
.................\.....\..............\...\.....\CustomControls.csproj.FileListAbsolute.txt
.................\.....\..............\...\.....\CustomControls.csproj.GenerateResource.Cache
.................\.....\..............\...\.....\CustomControls.dll
.................\.....\..............\...\.....\CustomControls.pdb
.................\.....\..............\...\.....\DesignTimeResolveAssemblyReferences.cache
.................\.....\..............\...\.....\DesignTimeResolveAssemblyReferencesInput.cac