The key to detect the Delphi (or
Rad-Studio) installed versions in a system is check the existence of these registry keys under the HKEY_CURRENT_USER root. for Borland delphi until version 7 \Software\Borland\Delphi\DelphiVersion for example for Delphi 7 must be \Software\Borland\Delphi\7.0 for ...
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