GimpUi.Preview.invalidate

@accepts(GimpUi.Preview)
@returns(none)
def invalidate(self):
    # Python wrapper for gimp_preview_invalidate()
  

This function starts or renews a short low-priority timeout. When the timeout expires, the GimpPreview::invalidated signal is emitted which will usually cause the self to be updated.

This function does nothing unless the "Preview" button is checked.

During the emission of the signal a busy cursor is set on the toplevel window containing the self and on the preview area itself.

Since 2.2

self

a GimpUi.Preview widget