A canvas library for generating technical drawings
The ADG library (Automatic Drawing Generation) is a set of functions focused on automating the drawing of mechanical parts. It is not a CAD system but a GObject-based library where a custom application can put common CAD entities such as paths, hatches and dimensions, to automatically create technical drawings.
A demo application is provided in order to show the capabilities of the canvas. Although it is possible to interact with the library directly in C (that is what the adg-demo...
Haru is a free, cross platform, open-sourced software library for generating PDF written in ANSI-C. It can work as both a static-library (.a, .lib) and a shared-library (.so, .dll).
This is a pre-alpha tool for modifying PDF forms written in C. It currently supports PDF versions 1.2, 1.3 and 1.4, which corresponds to Acrobat 3.0, 4.x and 5.x respectively. The program can currently handle text fields, checkboxes, and radio buttons.