generate_thumbnail_async

Description:

public async Pixbuf generate_thumbnail_async (string uri, string mime_type, Cancellable? cancellable) throws Error

Asynchronous version of generate_thumbnail

Since 43.0

this	a DesktopThumbnailFactory
uri	the URI of a file
mime_type	the MIME type of the file
cancellable	a Cancellable object
callback	a function that will be called when the task has ended
user_data	user data