Great to hear that and honestly never thought that DELPHI is Object-Oriented. Then is it similar to C++ OR I will say like which other language is close-origin of DELPHI???
Yes, Delphi is object-oriented derivative of Pascal.
There is a good paper: "Comparing Object-Oriented Features of Delphi, C++, C# and Java" (http://www.derangedcoder.net/programming/general/comparingObjectOrientedFeatures.html
There is also Delphi for .NET.
Have you written any programs/projects using DELPHI yet?
Yes, I have. I've written some applications using Delphi. Many of these are programms working with Databases (MS Access, MySQL), some multimedia applications, applications working with the local network.
Actually, Delphi IDE itself have written using Delphi programming language.
Among applications written using Delphi you may know are "Skype", "Total Commander", "The Bat!", "Dev-C++", "Inno Setup", and many others.