hover over button

Question

Hi, 

So far I have code that will start drawing a line when u do your first click until u release it.(which works fine)

What I would like to do next is to, detect for each button while drawing the line if the line is going over the buttons

Private Sub MainPage_PointerMoved(sender As Object, e As PointerRoutedEventArgs) Handles Me.PointerMoved



  For Each c As Button In g1.Children.OfType(Of Button)()

'I think the code shud go in here

        Next


    End Sub

But i'm not sure what will be the method to that? Any suggesstion?

Thank You

Answer 1

You can get the Button's location from the VisualTreeHelper. Turning it the other way around, you can get the control at a given point with the same class. Either way, once you know the location of the two objects you can do the math to see if they intersect.

Answer 2

ok, so i'm not really sure how to use the VisualTreeHelper, but i tried to get the location of my buttons using the following code, but it's only giving out the top left corner position only, how can i get the rest?

 For Each c As Button In g1.Children.OfType(Of Button)()
            Dim gt As GeneralTransform = c.TransformToVisual(Nothing)
            Dim p As Point = gt.TransformPoint(New Point(0, 0))
            x111.Text += c.Name & " : " & p.ToString & Environment.NewLine


        Next

Thank You