gtk/gtk.go
func (v *Entry) SetInvisibleChar(ch rune) {
	C.gtk_entry_set_invisible_char(v.native(), C.gunichar(ch))
}
func (v *Entry) SetInvisibleChar(ch rune) {
	C.gtk_entry_set_invisible_char(v.native(), C.gunichar(ch))
}
// SetInvisibleChar() is a wrapper around gtk_entry_set_invisible_char().