CairoWriteFunc {RGtk2} | R Documentation

## CairoWriteFunc

### Description

A callback used by cairo for outputting graphics data in formats like svg and png.

### Signature

  `CairoWriteFunc(data, length, user_data)`: The type of function which is called when a backend needs to write data to an output stream. It is passed the closure which was specified by the user at the time the write function was registered, the data to write and the length of the data in bytes. The write function should return `CAIRO_STATUS_SUCCESS` if all the data was successfully written, `CAIRO_STATUS_WRITE_ERROR` otherwise.

  `data`

    [raw] the buffer containing the data to write

  `length`

    [numeric] the amount of data to write

  `user_data`

    [R object] user-supplied data

### Author(s)

Michael Lawrence

### References

http://www.cairographics.org/manual/cairo-PNG-Support.html

[Package RGtk2 version 2.20.36.3 Index]