Inerface and Class reference

"ohm_prasadam" <[email protected]> Mon, 18 Aug 2003 07:25:43 -0000
Newsgroups gmane.comp.lang.delphi.programming
Message-ID <[email protected]>
Sir/Madam?
1. What is meant by Interface? why can't we define COM calsses etc. in 
a somple Unit?

2. What is class reference? "TTestClass = class of TSampleClass" What 
is the advantage of declaring like this?

If anybody can answer this please do it. 



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