Apakah ScrollBar Visible Pada Sebuah Control?

Option Explicit

Private Const GWL_STYLE = (-16)
Private Const WS_HSCROLL = &H100000
Private Const WS_VSCROLL = &H200000

Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long

Private Sub Command1_Click()
    Dim wndStyle As Long
    wndStyle = GetWindowLong(TreeView1.hwnd, GWL_STYLE)
    If (wndStyle And WS_HSCROLL) <> 0 Then
        MsgBox "A horizontal scroll bar is visible."
    Else
        MsgBox "A horizontal scroll bar is NOT visible."
    End If

    If (wndStyle And WS_VSCROLL) <> 0 Then
        MsgBox "A vertical scroll bar is visible."
    Else
        MsgBox "A vertical scroll bar is NOT visible."
    End If
End Sub

Private Sub Command2_Click()
    TreeView1.Move 250, 900, 1000, 1000
End Sub

Private Sub Form_Load()
    Form1.ScaleMode = 1
    Form1.Move 0, 0, 5100, 5040
    Command1.Caption = "Scroll Bar Test"
    Command1.Move 120, 120, 1700, 500
    Command2.Caption = "Size Control"
    Command2.Move 2000, 120, 1700, 500
    TreeView1.Move 250, 900, 3000, 1500
    TreeView1.Nodes.Add , , , "1: Sample Text"
    TreeView1.Nodes.Add , , , "2: Sample Text"
    TreeView1.Nodes.Add , , , "3: Sample Text"
    TreeView1.Nodes.Add , , , "4: Sample Text"
End Sub