The CairoStatus class

導入

CairoStatus is used to indicate errors that can occur when using Cairo. In some cases it is returned directly by functions. but when using CairoContext, the last error, if any, is stored in the object and can be retrieved with CairoContext::status() or cairo_status(). New entries may be added in future versions.

Use Cairo::statusToString() or cairo_status_to_string() to get a human-readable representation of an error message.

クラス概要

CairoStatus {

/* 定数 */

const integer SUCCESS = 0 ;

const integer NO_MEMORY = 1 ;

const integer INVALID_RESTORE = 2 ;

const integer INVALID_POP_GROUP = 3 ;

const integer NO_CURRENT_POINT = 4 ;

const integer INVALID_MATRIX = 5 ;

const integer INVALID_STATUS = 6 ;

const integer NULL_POINTER = 7 ;

const integer INVALID_STRING = 8 ;

const integer INVALID_PATH_DATA = 9 ;

const integer READ_ERROR = 10 ;

const integer WRITE_ERROR = 11 ;

const integer SURFACE_FINISHED = 12 ;

const integer SURFACE_TYPE_MISMATCH = 13 ;

const integer PATTERN_TYPE_MISMATCH = 14 ;

const integer INVALID_CONTENT = 15 ;

const integer INVALID_FORMAT = 16 ;

const integer INVALID_VISUAL = 17 ;

const integer FILE_NOT_FOUND = 18 ;

const integer INVALID_DASH = 19 ;

const integer INVALID_DSC_COMMENT = 20 ;

const integer INVALID_INDEX = 21 ;

const integer CLIP_NOT_REPRESENTABLE = 22 ;

const integer TEMP_FILE_ERROR = 23 ;

const integer INVALID_STRIDE = 24 ;

}

定義済み定数

CairoStatus::SUCCESS: No error has occurred
CairoStatus::NO_MEMORY: Out of memory
CairoStatus::INVALID_RESTORE: cairo_restore() called without matching cairo_save()
CairoStatus::INVALID_POP_GROUP: No saved group to pop
CairoStatus::NO_CURRENT_POINT: No current point defined
CairoStatus::INVALID_MATRIX: Invalid matrix (not invertible)
CairoStatus::INVALID_STATUS: Invalid value for an input CairoStatus>
CairoStatus::NULL_POINTER: Null pointer
CairoStatus::INVALID_STRING: Input string not valid UTF-8 string
CairoStatus::INVALID_PATH_DATA: Input path data not valid
CairoStatus::READ_ERROR: Error while reading from input stream
CairoStatus::WRITE_ERROR: Error while writing to output stream
CairoStatus::SURFACE_FINISHED: Target surface has been finished
CairoStatus::SURFACE_TYPE_MISMATCH: The surface type is not appropriate for the operation
CairoStatus::PATTERN_TYPE_MISMATCH: The pattern type is not appropriate for the operation
CairoStatus::INVALID_CONTENT: Invalid value for an input CairoContent
CairoStatus::INVALID_FORMAT: Invalid value for an input CairoFormat
CairoStatus::INVALID_VISUAL: Invalid value for an input Visual
CairoStatus::FILE_NOT_FOUND: File not found
CairoStatus::INVALID_DASH: Invalid value for a dash setting
CairoStatus::INVALID_DSC_COMMENT: Invalid value for a DSC comment
CairoStatus::INVALID_INDEX: Invalid index passed to getter
CairoStatus::CLIP_NOT_REPRESENTABLE: Clip region not representable in desired format
CairoStatus::TEMP_FILE_ERROR: Error creating or writing to a temporary file
CairoStatus::INVALID_STRIDE: Invalid value for CairoStride

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