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I downloaded the component VirtualTable for Delphi 7.
It installs successfully, but to put it in a TForm compile and get the message "[Fatal Error] PantPrincipal.pas (10): Unit MemUtils was compiled with a different version of zlib.zlibAllocMem."
They could help me. Thank you

Probably you have third-party ZLib library installed. Try to remove this library. VirtualTable was compiled with ZLib that comes with Delphi 7.