Shows how to create a progress with Fl_Progress widget.
To build this project, open "Terminal" and type following lines:
mkdir build && cd build
cmake ..
start Progress.sln
Select Progress project and type Ctrl+F5 to build and run it.
mkdir build && cd build
cmake .. -G "Xcode"
open ./Progress.xcodeproj
Select Progress project and type Cmd+R to build and run it.
mkdir build && cd build
cmake ..
cmake --build . --config Debug
./Progress