such cases main MapInfo callback function of the realization of a very good experience for beginners setcallback works.

Packet : 5956448callback1.rar filelist
CALLBACK
CALLBACK\CALLBACK.VBP
CALLBACK\CALLBACK.vbw
CALLBACK\GLOBALS.BAS
CALLBACK\MAINFORM.FRM
CALLBACK\MICALLBK.CLS
CALLBACK\MSSCCPRJ.SCC

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