Florian Müllner cd024e21f0 st-widget: Add method to clear background-image
For performance reasons, resources required to paint a widget are
aggressively cached; we know of at least one case where our caching
prevents updating the used background-image correctly, so add explicit
API to clear all associated cache data.

https://bugzilla.gnome.org/show_bug.cgi?id=679268
2012-09-24 22:03:05 +02:00
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