Propagates an error from within the simple asynchronous result to a given destination.
If the gio.Cancellable given to a prior call to SimpleAsyncResult.setCheckCancellable is cancelled then this function will return TRUE with dest set appropriately.
TRUE if the error was propagated to dest. FALSE otherwise.
Deprecated: Use gstreamer.Task instead.
GException on failure.
Propagates an error from within the simple asynchronous result to a given destination.
If the gio.Cancellable given to a prior call to SimpleAsyncResult.setCheckCancellable is cancelled then this function will return TRUE with dest set appropriately.