Question

I would like to stop the timer whenever a mouse stops moving inside a groupbox

As of now, I start the timer when the mouse hover at the groupbox and stops it when it leaves the group box.

Private Sub gbxMouseMap_MouseHover(sender As Object, e As System.EventArgs) Handles gbxMouseMap.MouseHover
    Timer.Start()
End Sub

Private Sub gbxMouseMap_MouseLeave(sender As Object, e As System.EventArgs) Handles gbxMouseMap.MouseLeave
    Timer.Stop()
End Sub

Answer 1

In the MouseMove event set a class varible named LastMoveTime to the current timer elapsed time. In the MouseHover event check to see if LastMoveTime has reached the timeout period, if so stop the timer.

I will get you started…

Private LastMoveTime As DateTime
Private MouseTimeoutMilliseconds as Integer = 500 


'put inside hover

If  LastMoveTime.AddMilliseconds(MouseTimeoutMilliseconds) < Now Then
 Timer.Stop()
Else
 Timer.Start()
End if