Get a pointer to the data of the image surface, for direct
inspection or modification.
A call to cairo_surface_flush() is required before accessing the
pixel data to ensure that all pending drawing operations are
finished. A call to cairo_surface_mark_dirty() is required after
the data is modified.
Since 1.2
Get a pointer to the data of the image surface, for direct inspection or modification. A call to cairo_surface_flush() is required before accessing the pixel data to ensure that all pending drawing operations are finished. A call to cairo_surface_mark_dirty() is required after the data is modified. Since 1.2