A useful program in only 10 (ten) lines of code!
It allows you to view information on the window where mouse cursor is positioned.
In this way, you can check, for example, if a program has been created using the VCL library used by Delphi and C++Builder. Indeed, the classes of this library begins with a ‘T’.
e.g. TButton, TComboBox, TListBox etc. etc.
Try TDWinInfo with software like “Skype” or Delphi itself