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滑鼠事件 & 鍵盤事件. 滑鼠事件 (MouseDown,MouseMove,MouseUp) Public Class Form1 Dim drag As Boolean = False ' 宣告 drag 變數, 用來記錄是否可拖曳 Private Sub Form1_Load(ByVal sender.

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Presentation on theme: "滑鼠事件 & 鍵盤事件. 滑鼠事件 (MouseDown,MouseMove,MouseUp) Public Class Form1 Dim drag As Boolean = False ' 宣告 drag 變數, 用來記錄是否可拖曳 Private Sub Form1_Load(ByVal sender."— Presentation transcript:

1 滑鼠事件 & 鍵盤事件

2 滑鼠事件 (MouseDown,MouseMove,MouseUp) Public Class Form1 Dim drag As Boolean = False ' 宣告 drag 變數, 用來記錄是否可拖曳 Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load 'Me.Text = " 拖曳範例 " ' Me.BackgroundImage = Image.FromFile("c:/vb2008/ch10/image/BackImage.jpg") ' picBlack.Image = New Bitmap("c:/vb2008/ch10/image/black.gif") 'picBlack.SizeMode = PictureBoxSizeMode.AutoSize 'picBlack.Cursor = System.Windows.Forms.Cursors.Hand End Sub ' 按下滑鼠 Private Sub picBlack_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picBlack.MouseDown If e.Button = Windows.Forms.MouseButtons.Left Then ' 按下左鍵 drag = True End If End Sub ' 移動滑鼠 Private Sub picBlack_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picBlack.MouseMove If drag Then picBlack.Left += e.X picBlack.Top += e.Y 'picBlack.Left += e.X - picBlack.Width / 2 'picBlack.Top += e.Y - picBlack.Height / 2 End If End Sub ' 放開滑鼠 Private Sub picBlack_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picBlack.MouseUp drag = False End Sub End Class

3 滑鼠事件 (MouseEnter,MouseHover,MouseLeave) Public Class Form1 Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load picCard.Image = Image.FromFile("card.jpg") lblKing.Text = "" End Sub ' 滑鼠進入時 Private Sub picCard_MouseEnter(ByVal sender As Object, ByVal e As System.EventArgs) Handles picCard.MouseEnter picCard.Image = Image.FromFile("king.jpg") End Sub ' 滑鼠進入時且暫停時 Private Sub picCard_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles picCard.MouseHover lblKing.Text = " 大家好! " + vbCrLf lblKing.Text += " 我是老K。K就是 king ,就是國王。 " + vbCrLf lblKing.Text += " 很高興認識大家。 " End Sub ' 滑鼠離開時 Private Sub picCard_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles picCard.MouseLeave picCard.Image = Image.FromFile("card.jpg") lblKing.Text = "" End Sub End Class

4 鍵盤事件 (KeyDown, KeyUp) Public Class Form1 Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load picRider.Image = Image.FromFile("bike_go.jpg") End Sub Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown lblKey.Text = " 按下 " & e.KeyCode.ToString() & " 鍵, 鍵值為 " & e.KeyValue 'KeyValue: 可以取得鍵盤值 (ASCII code) 'KeyCode: 取得鍵盤碼 (eg: keys.Left, keys.F1, keys.a, key.B,......) If e.KeyCode = Keys.A Then picRider.Image = Image.FromFile("bike_go.jpg") If picRider.Left >= Me.Width Then picRider.Left = 0 - picRider.Width Else picRider.Left += 20 End If lblState.Text = " 前進 !!" ElseIf e.KeyCode = Keys.Left Then picRider.Image = Image.FromFile("bike_go.jpg") If picRider.Width + picRider.Left <= 0 Then picRider.Left = Me.Width Else picRider.Left -= 20 End If lblState.Text = " 後退 !!" ElseIf e.KeyCode = Keys.Up Then picRider.Image = Image.FromFile("bike_up.jpg") lblState.Text = " 舉孤輪 !!" ElseIf e.KeyCode = Keys.Down Then picRider.Image = Image.FromFile("bike_stop.jpg") lblState.Text = " 煞車 !!" End If End Sub End Class


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