void gtk_entry_progress_pulse ( GtkEntry* entry )
Indicates that some progress is made, but you don’t know how much.
Causes the entry’s progress indicator to enter “activity mode,”
where a block bounces back and forth. Each call to
gtk_entry_progress_pulse() causes the block to move by a little bit
(the amount of movement per pulse is determined by gtk_entry_set_progress_pulse_step()).
Available since: 2.16