A note about the future of ecsoft2.org

ecsoft2.org runs on software (Drupal 7 and PHP 7.4) that reached its end of life years ago and no longer receives security updates. Keeping the site online safely is getting harder.

Giving it a future means migrating it to a current platform — and that is only worth doing if people still use it and want to help keep it alive.

If you care about ecsoft2.org, as a user, a contributor, or someone willing to lend a hand, please ggambatiscali [dot] it (get in touch) by January 31, 2027.

If no one comes forward by then, the site will be turned into a read-only archive, so that its content stays available.

OS/2 Presentation Manager Programming - Charles Petzold

This book covers the basics of programming in C for the OS/2 Presentation Manager, the graphical windowing environment included in IBM's OS/2. Presentation Manager builds upon OS/2, a powerful 32-bit protected-mode multitasking operating system, to provide windowing, a consistent user interface and a sophisticated graphics programming system. OS/2 runs on IBM (and compatible) PCs and PS/2 that are based on Intel 386 and 486 microprocessors.
The purpose of this book is to help aspiring Presentation Manager programmers get started in that job. Source code examples included.

A Knowledge of C language is required.