GTK3 CSS C Language Tutorial 15 Signal and Events EventBox Part 07

here we are extending our knowledge about the proper use of GtkEventBox and its usage.
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We are talking about a new important function too:
gtk_widget_realize()

This means that if you create your EventBox like this:
event_box = gtk_event_box_new();
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And then you show it just after you create it:
event_box = gtk_event_box_new();
gtk_widget_show ( event_box );
Do not expect to work, because there is no window for your EventBox yet.
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You need to realize ( create ) it. -=========================================================================-
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