vb.net鼠标拖动弹出的无边框窗口

参考：https://stackoverflow.com/questions/17392088/allow-a-user-to-move-a-borderless-window

注意：Me要改成你要拖动的控件名称

效果：

Class Form1
    Private IsFormBeingDragged As Boolean = False
    Private MouseDownX As Integer
    Private MouseDownY As Integer

    Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Handles MyBase.MouseDown

        If e.Button = MouseButtons.Left Then
            IsFormBeingDragged = True
            MouseDownX = e.X
            MouseDownY = e.Y
        End If
    End Sub

    Private Sub Form1_MouseUp(ByVal sender As Object, ByVal e As MouseEventArgs) Handles MyBase.MouseUp

        If e.Button = MouseButtons.Left Then
            IsFormBeingDragged = False
        End If
    End Sub

    Private Sub Form1_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs) Handles MyBase.MouseMove

        If IsFormBeingDragged Then
            Dim temp As System.Drawing.Point= New System.Drawing.Point()

            temp.X = Me.Location.X + (e.X - MouseDownX)
            temp.Y = Me.Location.Y + (e.Y - MouseDownY)
            Me.Location = temp
            temp = Nothing
        End If
    End Sub
End Class