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

§ message_loop_callback

using xtd::forms::message_loop_callback = typedef delegate<bool()>

Represents a method that will check whether the hosting environment is still sending messages.

Returns
true if the hosting environment is still sending messages; otherwise, false.
Remarks
This delegate is used with the application::register_message_loop method.