xtd - Reference Guide  0.1.0
Modern c++17 framework to create console, gui and unit test applications on Windows, macOS and Linux.

§ message_box_options

Specifies options on a message_box.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
This enumeration is used by the MessageBox class.
If you do not want to specify this parameter when calling methods on MessageBox, you can pass in 0 instead.