gtk:revealer-reveal-child (object)

object -- a gtk:revealer widget
reveal -- true to reveal the child widget

The accessor for the reveal-child slot of the gtk:revealer class gets whether the child widget is currently revealed, or tells the revealer to reveal or conceal its child widget.

This function returns true as soon as the transition to the revealed state is started. To find out whether the child widget is fully revealed, that is, the transition is complete, use the gtk:revealer-child-revealed function. The transition will be animated with the current transition type of the revealer.