Request width of the GTK window for an app.nit application

This is the minimum width of the window, it may grow bigger to fit content.

Property definitions

linux :: ui $ Sys :: gtk_window_width_request
# Request width of the GTK window for an app.nit application
#
# This is the minimum width of the window, it may grow bigger to fit content.
fun gtk_window_width_request: Int do return 480
lib/linux/ui.nit:23,1--26,47