Guesses the content type based on example data. If the function is uncertain, result_uncertain will be set to true. Either filename or data may be null, in which case the guess will be based solely on the other argument.
a path, or null
a stream of data, or null
return location for the certainty of the result, or null
a string indicating a guessed content type for the given data. Free with glib.global.gfree
Guesses the content type based on example data. If the function is uncertain, result_uncertain will be set to true. Either filename or data may be null, in which case the guess will be based solely on the other argument.