Undocumented in source.
Height of the image in pixels.
less than 1 to disable length checks, otherwise GDK_PIXDATA_HEADER_LENGTH + length of pixel_data.
information about colorspace, sample width and encoding, in a GdkPixdataType
width x height pixels, encoded according to pixdata_type and rowstride.
Distance in bytes between rows.
Width of the image in pixels.