C# Definition:

[StructLayout(LayoutKind.Sequential)]
struct NMHDR
{
   public IntPtr hwndFrom;
   public int idFrom;
   public int code;
}

VB Definition:

<StructLayout(LayoutKind.Sequential)> _  
Structure NMHDR
   Public hwndFrom As IntPtr
   Public idFrom As Integer
   Public code As Integer
End Structure

User-Defined Field Types:

None.

Notes:

None.