c# to achieve the Add icon in the title bar buttons function of source

AeroNonClientButtons
....................\AeroNonClientButtons.sln
....................\AeroOrbTest
....................\...........\AeroNonClientButtons.csproj
....................\...........\AeroNonClientButtons.csproj.user
....................\...........\Dwm.cs
....................\...........\MainForm.Designer.cs
....................\...........\MainForm.cs
....................\...........\MainForm.resx
....................\...........\NCRenderer.cs
....................\...........\Program.cs
....................\...........\Properties
....................\...........\..........\AssemblyInfo.cs
....................\...........\..........\Resources.Designer.cs
....................\...........\..........\Resources.resx
....................\...........\..........\Settings.Designer.cs
....................\...........\..........\Settings.settings
....................\...........\Resources
....................\...........\.........\new16.gif
....................\...........\.........\open16.gif
....................\...........\.........\paste16.gif
....................\...........\.........\pasteall16.gif
....................\...........\.........\redo16.gif
....................\...........\.........\save16.gif
....................\...........\.........\undo16.gif
....................\...........\WinApi.cs
....................\...........\bin
....................\...........\...\Debug
....................\...........\...\.....\AeroOrbTest.exe
....................\...........\...\.....\NonClientAreaButtons.exe

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