gtk:entry-visibility (object)

object -- a gtk:entry widget
visible -- true if the contents of the text entry are displayed as plaintext

The accessor for the visibility slot gets or sets whether the text in the text entry is visible.

When visibility is set to false, characters are displayed as the invisible char, and will also appear that way when the text in the text entry is copied elsewhere. By default, GTK picks the best invisible character available in the current font, but it can be changed with the gtk:entry-invisible-char function.