I'm developing a quiz software in vb. Net that has two separate windows after login. I've added timers to each of the windows. But the issue is how do I disable the timer count of one window when the mouse focus is on the other window??
As Hans suggested, use the form Deactivate event.
Private Sub Form1_Deactivate(sender As Object, e As EventArgs) Handles MyBase.Deactivate
' deactivate this forms timer
End Sub