Holder.forceInvalidE

void forceInvalidE(glib.error.ErrorWrap error = null)

Forces a holder to be invalid; to set it valid again, a new value must be assigned to it using [gda.holder.Holder.setValue] or [gda.holder.Holder.takeValue].

holder's value is set to null.

Parameters

error a #GError explaining why holder is declared invalid, or null