enum cairo_status_t

typedef enum _cairo_status {
    CAIRO_STATUS_SUCCESS = 0,

    CAIRO_STATUS_NO_MEMORY,
    CAIRO_STATUS_INVALID_RESTORE,
    CAIRO_STATUS_INVALID_POP_GROUP,
    CAIRO_STATUS_NO_CURRENT_POINT,
    CAIRO_STATUS_INVALID_MATRIX,
    CAIRO_STATUS_INVALID_STATUS,
    CAIRO_STATUS_NULL_POINTER,
    CAIRO_STATUS_INVALID_STRING,
    CAIRO_STATUS_INVALID_PATH_DATA,
    CAIRO_STATUS_READ_ERROR,
    CAIRO_STATUS_WRITE_ERROR,
    CAIRO_STATUS_SURFACE_FINISHED,
    CAIRO_STATUS_SURFACE_TYPE_MISMATCH,
    CAIRO_STATUS_PATTERN_TYPE_MISMATCH,
    CAIRO_STATUS_INVALID_CONTENT,
    CAIRO_STATUS_INVALID_FORMAT,
    CAIRO_STATUS_INVALID_VISUAL,
    CAIRO_STATUS_FILE_NOT_FOUND,
    CAIRO_STATUS_INVALID_DASH,
    CAIRO_STATUS_INVALID_DSC_COMMENT,
    CAIRO_STATUS_INVALID_INDEX,
    CAIRO_STATUS_CLIP_NOT_REPRESENTABLE,
    CAIRO_STATUS_TEMP_FILE_ERROR,
    CAIRO_STATUS_INVALID_STRIDE,
    CAIRO_STATUS_FONT_TYPE_MISMATCH,
    CAIRO_STATUS_USER_FONT_IMMUTABLE,
    CAIRO_STATUS_USER_FONT_ERROR,
    CAIRO_STATUS_NEGATIVE_COUNT,
    CAIRO_STATUS_INVALID_CLUSTERS,
    CAIRO_STATUS_INVALID_SLANT,
    CAIRO_STATUS_INVALID_WEIGHT,
    CAIRO_STATUS_INVALID_SIZE,
    CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED,
    CAIRO_STATUS_DEVICE_TYPE_MISMATCH,
    CAIRO_STATUS_DEVICE_ERROR,

    CAIRO_STATUS_LAST_STATUS
} cairo_status_t;

cairo_status_t is used to indicate errors that can occur when using Cairo. In some cases it is returned directly by functions. but when using cairo_t, the last error, if any, is stored in the context and can be retrieved with cairo_status().

New entries may be added in future versions. Use cairo_status_to_string() to get a human-readable representation of an error message.

cairo_status_to_string ()

const char *        cairo_status_to_string              (cairo_status_t status);

Provides a human-readable description of a cairo_status_t.

cairo_debug_reset_static_data ()

void                cairo_debug_reset_static_data       (void);

Resets all static data within cairo to its original state, (ie. identical to the state at the time of program invocation). For example, all caches within cairo will be flushed empty.

This function is intended to be useful when using memory-checking tools such as valgrind. When valgrind's memcheck analyzes a cairo-using program without a call to cairo_debug_reset_static_data(), it will report all data reachable via cairo's static objects as "still reachable". Calling cairo_debug_reset_static_data() just prior to program termination will make it easier to get squeaky clean reports from valgrind.

WARNING: It is only safe to call this function when there are no active cairo objects remaining, (ie. the appropriate destroy functions have been called as necessary). If there are active cairo objects, this call is likely to cause a crash, (eg. an assertion failure due to a hash table being destroyed when non-empty).