You can use the ActiveControl property together with the Screen object to identify or refer to the control that has the focus.
Setting
This property setting contains a reference to the Control object that has the focus at run time.
This property is available by using a macro or Visual Basic and is read-only in all views.
Remarks
You can use the ActiveControl property to refer to the control that has the focus at run time together with one of its properties or methods. The following example assigns the name of the control with the focus to the strControlName
variable:
Dim ctlCurrentControl As Control
Dim strControlName As String
Set ctlCurrentControl = Screen.ActiveControl
strControlName = ctlCurrentControl.Name
If no control has the focus when you use the ActiveControl property, or if all of the active form's controls are hidden or disabled, an error occurs.