I'm wanting to create an effect where the user knows when they're hovering over a picturebox, but I don't want to use the MouseHover event because with the Hover event you have to wait a bit of time for it to fire, where I need it immediately. What I'm currently doing is setting the BorderStyle in the MouseEnter/Leave events. The issue comes with the MouseLeave event, it doesn't always set the BorderStyle back to none. The way I'm loading the pictureboxes is like so:
Code:
        For x As Integer = 0 To board_size.Width - 1
            For y As Integer = 0 To board_size.Height - 1
                Dim pb As New PictureBox
                With pb
                    .BackColor = Color.White
                    .Location = New Point(x * 50, y * 50)
                    .Size = New Size(50, 50)
                    .SizeMode = PictureBoxSizeMode.Zoom
                    .BorderStyle = BorderStyle.None
                End With

                AddHandler pb.MouseEnter, AddressOf board_MouseEnter
                AddHandler pb.MouseLeave, AddressOf board_MouseLeave

                board(x, y) = pb
                SplitContainer1.Panel2.Controls.Add(pb)
            Next
        Next
The MouseEnter/Leave look like this:
Code:
    Private Sub board_MouseEnter(sender As Object, e As EventArgs)
        Dim pb As PictureBox = DirectCast(sender, PictureBox)
        pb.BorderStyle = BorderStyle.FixedSingle
    End Sub

    Private Sub board_MouseLeave(sender As Object, e As EventArgs)
        Dim pb As PictureBox = DirectCast(sender, PictureBox)
        pb.BorderStyle = BorderStyle.None
    End Sub
Is there any reason why the borderstyle isn't being set to none?