If we press "enter", we have a new line.
If we press "enter" more times then there are lines in the default sized window, then a vertical scrollbar appears.
If we write a long sentence, the text will wrap breaking lines between words.
If we have a loooooooooooooooooooooooooooooooooooong (that was long) word, a* horizontal scrollbar will appear.
This is an example of Gtk.TextView
In this sample we used the following:
GtkApplication
GtkWindow
GtkTextBuffer
GtkTextView
GtkScrolledWindow
GtkContainer