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NAME

       im_invalidate - flush caches related to an image

SYNOPSIS

       #include <vips/vips.h>

       void im_invalidate( IMAGE *im )

DESCRIPTION

       im_invalidate(3)  marks  all caches related to the image as invalid and
       requring recalculation.  It needs to be  called  if  an  image  changes
       after being made: for example, after a paint action, or perhaps after a
       new frame has arrived from a video source.

       Any invalidate callbacks registered on any of the affected  images  are
       triggered.

SEE ALSO

       im_prepare(3), im_region_buffer(3), im_add_invalidate_callback(3).

                                5 December 2006