GutterRenderer.activate

void activate(gtk.text_iter.TextIter iter, gdk.rectangle.Rectangle area, gdk.event.Event event) nothrow

Emits the #GtkSourceGutterRenderer::activate signal of the renderer. This is called from #GtkSourceGutter and should never have to be called manually.

Parameters

`iter`	a #GtkTextIter at the start of the line where the renderer is activated
`area`	a #GdkRectangle of the cell area where the renderer is activated
`event`	the event that triggered the activation