borders of a map

[CharChabil]

Having a map
I want to know if the user has clicked outside or inside the borders of the map
Note that: the image containing the map is chosen as background of the form
So I thought of something
I have drawn the map with the following
RGB =255,255,255 outside the borders
RGB=254,254,254 inside the border

See what I have thought about:
Dim img1 As Bitmap

Private Sub frmmap1_Load()
img1 = New Bitmap("images\map.jpg", True)
End Sub
Private Sub frmmap1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
            If (img1.GetPixel(e.Location.X, e.Location.Y).R = 255 Then
            MsgBox("out")
 
        Else
            MsgBox("in")
End if
End sub

But I m facing problem with that (because the size of img1 is not the same as background of the form

Can I do the same test directly on the background of the form without loading img1?
Or is there any other way of thinkin
Regards

[kenobewan]

I was thinking of an image map, but how are you going to capture the click event of a background image?

[CharChabil]

I was thinking of an image map, but how are you going to capture the click event of a background image?

Can you advice me a way of not allowing the user to click outside the borders??
HAppy holidays and thx

[kenobewan]

So you want users able to click within the borders of an image but not allowing them to click outside this? What exactly are you trying to achieve?

Trying to protect an image but not allowing users to click it will not work, there are always ways around it. You will need to come up with other ways to protect your image if this is the case.