&gt; &quot;how do I write a Windows program in this?&quot;<p>Turbo Pascal for Windows, it had two releases 1.0 and 1.5, introduced the Object Windows Library later adopted by Turbo and Borland C++ for Windows.<p>It was replaced by Delphi with its Visual Control Library afterwards.<p>The problem was Borland management going nuts and no having a proper version for UNIX systems, which were gaining market share back then.