"In an effort to sharpen my programming skills, I wrote a game using a GUI framework with which I was not previously familiar and ported it to several platforms. The framework selected was The GIMP Toolkit, and the application was a puzzle solving game called GTK Sudoku. In this article, I will describe the path that I took to make use of this fine toolkit.
"I used four criteria for selecting a GUI framework: (1) The framework had to support cross-platform development. (2) The framework had to be one that I had never used, otherwise I feared that I wouldn't learn as much. This eliminated FLTK and wxWidgets. (3) For my tastes, C is preferred over C++. (4) I wanted GTK Sudoku to be scalable in the sense that the size of the default font, not the resolution of the display, determines the size of each window and widget. The Cairo vector graphics library was of great help to meet this criterion..."
