| Extracted from Pike v7.8 release 866 at 2018-07-18.

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Image
Image.GIF

# Method Image.GIF._gce_block()

Method _gce_block

  `string _gce_block(int transparency, int transparency_index, int delay, int user_input, int disposal)`

Description

  This function gives back a Graphic Control Extension block. A GCE block has the scope of the following render block.

Parameter `transparency`
Parameter `transparency_index`

  The following image has transparency, marked with this index.

Parameter `delay`

  View the following rendering for this many centiseconds (0..65535).

Parameter `user_input`

  Wait the delay or until user input. If delay is zero, wait indefinitely for user input. May sound the bell upon decoding.

Parameter `disposal`

  Disposal method number;

Note

  This is in the very advanced sector of the GIF support; please read about how GIF files works.

  Most decoders just ignore some or all of these parameters.

See also

  _render_block , render_block