Borland C++

Turbo Vision: A set of C++ classes to create professional applications in DOS.

Those classes mimics some of the aspects of a Windows application like: dialog boxes, messages pumps, menus, accelerators, etc.

Borland Power Pack for DOS: Used to create 16- and 32-bit protected mode DOS applications, which can access a limited scope of the Windows API and call functions in any Windows DLL.

If some error is found, a pop-up window appears, the debugger can stop, or a log is written to disk.

[12] It includes a version of Borland C++Builder 6, Series 60 Software Development Kit (SDK) for Symbian OS, Nokia Edition (includes Nokia Series 60 emulator), C++ Mobile Edition plug-in.