The program Japos File CRC is intended for checkingchanges in data files, text, programs etc. The changesusually happen by wrong working encryption programs,data comprimation, data transmission on carriers or bycomputer viruses. For closely analyse of changes infiles serves our program Japos Compare File.By means of this source code you can learn how programin Delphi with use WinApi. You learn e.g. how drawingtable, animated icon, change color, created dialog box.The own source code will enable to understand evenmore programming technigues.The source code is written intelligibly and annotatedin detail.