Shows how to create Combo boxes with own Fl_Combo_Box widgets.
To build this project, open "Terminal" and type following lines:
mkdir build && cd build
cmake ..
start Combo_Box.sln
Select Combo_Box project and type Ctrl+F5 to build and run it.
mkdir build && cd build
cmake .. -G "Xcode"
open ./Combo_Box.xcodeproj
Select Combo_Box project and type Cmd+R to build and run it.
mkdir build && cd build
cmake ..
cmake --build . --config Debug
./Combo_Box