Gtk.Entry.prototype.set_placeholder_text

function set_placeholder_text(text:String):void {
    // Gjs wrapper for gtk_entry_set_placeholder_text()
}

Sets text to be displayed in entry when it is empty and unfocused. This can be used to give a visual hint of the expected contents of the Gtk.Entry.

Note that since the placeholder text gets removed when the entry received focus, using this feature is a bit problematic if the entry is given the initial focus in a window. Sometimes this can be worked around by delaying the initial focus setting until the first key event arrives.

Since 3.2

text

a string to be displayed when entry is empty an unfocused, or null