cairo_format_t 3 cairo_format_t enumeration for image formats enums cairo_format_t typedef enum cairo_format { CAIRO_FORMAT_ARGB32 = PictStandardARGB32, CAIRO_FORMAT_RGB24 = PictStandardRGB24, CAIRO_FORMAT_A8 = PictStandardA8, CAIRO_FORMAT_A1 = PictStandardA1 } cairo_format_t; Possible formats for in-memory images. CAIRO_FORMAT_ARGB32 one byte for red, green, blue and alpha. (rowstride = width * 4) CAIRO_FORMAT_RGB24 one byte for red, green and blue (rowstride = width * 4) CAIRO_FORMAT_A8 indexed color image CAIRO_FORMAT_A1 a bitmap