Asynchronously queries the stream for a gio.FileInfo When completed, callback will be called with a GAsyncResult which can be used to finish the operation with FileOutputStream.queryInfoFinish.
For the synchronous version of this function, see FileOutputStream.queryInfo.
a file attribute query string.
the [I/O priority][gio-GIOScheduler] of the request
optional gio.Cancellable object, NULL to ignore.
callback to call when the request is satisfied
the data to pass to callback function
Asynchronously queries the stream for a gio.FileInfo When completed, callback will be called with a GAsyncResult which can be used to finish the operation with FileOutputStream.queryInfoFinish.
For the synchronous version of this function, see FileOutputStream.queryInfo.