diff options
Diffstat (limited to 'doc/public/xml/cairo-image.xml')
| -rw-r--r-- | doc/public/xml/cairo-image.xml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/public/xml/cairo-image.xml b/doc/public/xml/cairo-image.xml index 9c46882..9299114 100644 --- a/doc/public/xml/cairo-image.xml +++ b/doc/public/xml/cairo-image.xml @@ -260,6 +260,12 @@ destroy-notification fallback to the surface if necessary. <para> Get a pointer to the data of the image surface, for direct inspection or modification. +</para> +<para> +A call to <link linkend="cairo-surface-flush"><function>cairo_surface_flush()</function></link> is required before accessing the +pixel data to ensure that all pending drawing operations are +finished. A call to <link linkend="cairo-surface-mark-dirty"><function>cairo_surface_mark_dirty()</function></link> is required after +the data is modified. </para><variablelist role="params"> <varlistentry><term><parameter>surface</parameter> :</term> <listitem><simpara>a <link linkend="cairo-image-surface-t"><type>cairo_image_surface_t</type></link> |