[RESOLVED] Noob question on custom interface

I'm trying to get a button that filters out clicks based on transparency mask of a background image.

E.g. when I set FormBorderStyle to (none) and TransparencyKey to MyFormImage.GetPixel(0,0), then make a button with no border and a background image that uses the same transparency mask, I get the behavior that I want on the button, but it also punches a square hole in the form - not what I want.

Moreover, by using .maketransparent on the button image, I get the look, but not the behavior - same as clicking in a rectangular region.

Is there a simple way to make this work?

Any manual alternatives are looking rather involved if I happen to have multiple or overlapping buttons.

If not, can I turn off the border that appears around the button region during a click action?

Never mind, got it.

vb.net Code:

Class Form1
    Private Sub Form1_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        Dim testButton As New Button
        testButton.FlatAppearance.BorderColor = System.Drawing.Color.FromArgb(0)
        tesButtont.FlatAppearance.BorderSize = 0
        testButton.FlatAppearance.MouseDownBackColor = Color.Transparent
        testButton.FlatAppearance.MouseOverBackColor = Color.Transparent
        testButton.FlatStyle = FlatStyle.Flat
        testButton.BackColor = Color.Transparent
        testButton.AutoSize = False
        Me.imgBackground = New Bitmap("../../Doodley.bmp")
        imgBackground.MakeTransparent()
        testButton.Size = imgBackground.Size
        testButton.BackgroundImage = imgBackground
        testButton.Location = New Point(50, 100)
        AddHandler test.Click, AddressOf testButton_Click
        Me.Controls.Add(test)
    End Sub
 
    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs)
        MessageBox.Show("Button1 was clicked!")
    End Sub
End Class