These days, working with a display in software is fairly easy. Thanks to the convenience of the modern OS, we’re blessed with graphical user interfaces, where things such as buttons and windows and ...

C is not a language known in the context of developing user interfaces, but even small systems occasionally need to communicate with their users. Often all that is needed is the display of a few ...

Qt comes with a handy tool that lives a rather anonymous life in the tools/qvfb directory. This tool does wonders when it comes to demoing, training users and creating documentation. The QVFb, or Qt ...

We also need a function to get a block of pixels and a function to restore them: void saveBlock(uint32_t x, uint32_t y, uint32_t L, uint32_t block[]) { for (int i = 0; i < L; i++) { for (int j = 0; j ...