C# Definition:

[StructLayout(LayoutKind.Sequential)]
struct TITLEBARINFO
{
    public const int CCHILDREN_TITLEBAR = 5;
    public uint cbSize;
    public RECT rcTitleBar;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=CCHILDREN_TITLEBAR+1)]
    public uint rgstate;
}

VB Definition:

Structure TITLEBARINFO
   Public TODO
End Structure

User-Defined Field Types:

None.

Notes:

None.