Make sure the ListBox widget is created before modifying it.
Call DropGraphics() when a widget is unmapped to conserve resources
and because DropGraphics() ends up being called from the map signal
handler so nothing is saved by not calling it.
Remove the nearly identical accent / character macro re-definitions.
Make sure widget is realized before grabbing the primary selection.
Ensure the caret is visible after a selection is pasted.
Ensure uri data is NULL-terminated before calling NotifyURIDropped.
Use correct call, gdk_region_destroy, to free a region.
The fixed-height-mode property is used to optimize display of large
autocompletion lists. This property was added in gtk 2.4, but is probed
for at runtime so the code should work with older gtk versions.
The active color is set to the selected color on the list box so the
selected lines are more clearly selected when the listbox widget does
not have the focus. The autocompletion popup never gets the focus so
the active color ends up being used.