本文整理匯總了VB.NET中System.Windows.Forms.ScrollBar.Scroll事件的典型用法代碼示例。如果您正苦於以下問題：VB.NET ScrollBar.Scroll事件的具體用法？VB.NET ScrollBar.Scroll怎麽用？VB.NET ScrollBar.Scroll使用的例子？那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。您也可以進一步了解該事件所在類System.Windows.Forms.ScrollBar的用法示例。
在下文中一共展示了ScrollBar.Scroll事件的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: HandleScroll
Private Sub HandleScroll(ByVal sender As [Object], ByVal e As ScrollEventArgs) _
Handles vScrollBar1.Scroll, hScrollBar1.Scroll
'Create a graphics object and draw a portion of the image in the PictureBox.
Dim g As Graphics = pictureBox1.CreateGraphics()
Dim xWidth As Integer = pictureBox1.Width
Dim yHeight As Integer = pictureBox1.Height
Dim x As Integer
Dim y As Integer
If (e.ScrollOrientation = ScrollOrientation.HorizontalScroll) Then
x = e.NewValue
y = vScrollBar1.Value
Else 'e.ScrollOrientation == ScrollOrientation.VerticalScroll
y = e.NewValue
x = hScrollBar1.Value
End If
'First Rectangle: Where to draw the image.
'Second Rectangle: The portion of the image to draw.
g.DrawImage(pictureBox1.Image, _
New Rectangle(0, 0, xWidth, yHeight), _
New Rectangle(x, y, xWidth, yHeight), _
GraphicsUnit.Pixel)
pictureBox1.Update()
End Sub示例2: AddMyScrollEventHandlers
Private Sub AddMyScrollEventHandlers()
' Create and initialize a VScrollBar.
Dim vScrollBar1 As New VScrollBar()
' Add event handlers for the OnScroll and OnValueChanged events.
AddHandler vScrollBar1.Scroll, AddressOf Me.vScrollBar1_Scroll
AddHandler vScrollBar1.ValueChanged, AddressOf Me.vScrollBar1_ValueChanged
End Sub
' Create the ValueChanged event handler.
Private Sub vScrollBar1_ValueChanged(sender As Object, e As EventArgs)
' Display the new value in the label.
label1.Text = "vScrollBar Value:(OnValueChanged Event) " & _
vScrollBar1.Value.ToString()
End Sub
' Create the Scroll event handler.
Private Sub vScrollBar1_Scroll(sender As Object, e As ScrollEventArgs)
' Display the new value in the label.
label1.Text = "VScrollBar Value:(OnScroll Event) " & _
e.NewValue.ToString()
End Sub
Private Sub button1_Click(sender As Object, e As EventArgs)
' Add 40 to the Value property if it will not exceed the Maximum value.
If vScrollBar1.Value + 40 < vScrollBar1.Maximum Then
vScrollBar1.Value = vScrollBar1.Value + 40
End If
End Sub