mouseEnter(); (Form) mouseEnter(control: control-type input); (Control)
The mouseEnter event occurs when the user moves the mouse onto a control or form.
Unlike the mouseMove event, which is generated continually as the mouse pointer moves across objects, the mouseEnter event occurs once only; that is, when the mouse moves onto the object.
Use this event method, for example, to draw the changed state of a button. (Use the mouseLeave event to restore the state of the button.)