I've been really wanting to learn C++/QT Programming and finally got around to playing with it. A few months ago, I wrote one console based program which was a conversion of a perl script from a friend that analyzed the folding@home output and gave statistics on the work unit times. I successfully converted it and got a refresher course in C++ at the same time.
Recently, I started playing with QT-designer, a GUI based GUI builder (RAD tool?). My first attempt took 2 numbers and added them together and spit out the result.
My 2nd attempt was much more interesting as seen by this screen shot. It is a batch sparge or no sparge homebrewing calculator. I found a spreadsheet that had the calculations layed out and just GUIfied it. It was a fun exercise and should actually be useful. There is some stuff I need to clean up (like having the program not segfault when you want t close it) but other than that it works well. Maybe I'll keep going and make a suite of homebrewing calcs. <g>