Public Class TextBoxLines Inherits NativeWindow Const WM_PAINT = &HF Const WM_NCPAINT = &H85 Const WM_COMMAND = &H111 Const WM_USER = &H400 Const WM_REFLECT = WM_USER + &H1C00 Private Owner As TextBox Public Sub New(textbox As TextBox) Me.Owner = textbox Me.AssignHandle(textbox...