g_file_measure_disk_usage

function g_file_measure_disk_usage(

  file_: PGFile;

  flags: TGFileMeasureFlags;

  cancellable: PGCancellable;

  progress_callback: TGFileMeasureProgressCallback;

  progress_data: gpointer;

  disk_usage: Pguint64;

  num_dirs: Pguint64;

  num_files: Pguint64;

  error: PPGError

):gboolean;