FileInputStream.queryInfoAsync

void queryInfoAsync(string attributes,  int  ioPriority,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Queries the stream information asynchronously. When the operation is finished callback will be called. You can then call [gio.file_input_stream.FileInputStream.queryInfoFinish] to get the result of the operation.

For the synchronous version of this function, see [gio.file_input_stream.FileInputStream.queryInfo].

If cancellable is not null, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error [gio.types.IOErrorEnum.Cancelled] will be set

Parameters

`attributes`	a file attribute query string.
`ioPriority`	the [I/O priority][io-priority] of the request
`cancellable`	optional #GCancellable object, null to ignore.
`callback`	a #GAsyncReadyCallback to call when the request is satisfied