Sets whether the contents of the GtkText are visible or not.
When visibility is set to %FALSE, characters are displayed
as the invisible char, and will also appear that way when
the text in the widget is copied to the clipboard.
By default, GTK picks the best invisible character available
in the current font, but it can be changed with
[method@Gtk.Text.set_invisible_char].
Note that you probably want to set [property@Gtk.Text:input-purpose]
to %GTK_INPUT_PURPOSE_PASSWORD or %GTK_INPUT_PURPOSE_PIN to
inform input methods about the purpose of this self,
in addition to setting visibility to %FALSE.
Sets whether the contents of the GtkText are visible or not.
When visibility is set to %FALSE, characters are displayed as the invisible char, and will also appear that way when the text in the widget is copied to the clipboard.
By default, GTK picks the best invisible character available in the current font, but it can be changed with [method@Gtk.Text.set_invisible_char].
Note that you probably want to set [property@Gtk.Text:input-purpose] to %GTK_INPUT_PURPOSE_PASSWORD or %GTK_INPUT_PURPOSE_PIN to inform input methods about the purpose of this self, in addition to setting visibility to %FALSE.