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