Talk:FMX.StdCtrls.TExpander.OnExpandedChanging
This is not triggered by the check box changing, but by IsExpanded changing (more accurately, about to change).
Philip J. Rayment (talk) 17:59, 5 April 2018 (PDT)
This is not triggered by the check box changing, but by IsExpanded changing (more accurately, about to change).
Philip J. Rayment (talk) 17:59, 5 April 2018 (PDT)