VB.NET自定义标题栏拖动

'首先在form里添加一个panel容器
Dim x1, x2, y1, y2 As Integer
'鼠标左键按下后将x1,y1赋值
Private Sub Panel1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles pnlMove.MouseDown
If e.Button = Windows.Forms.MouseButtons.Left Then
x1 = e.X
y1 = e.Y
End If
End Sub
'拖动过程中不断对x2,y2赋值
Private Sub Panel1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles pnlMove.MouseMove
If e.Button = Windows.Forms.MouseButtons.Left Then
x2 = e.X
y2 = e.Y
Me.Left = Me.Location.X + (x2 - x1)
Me.Top = Me.Location.Y + (y2 - y1)
End If
End Sub