propagateError
⚠️ Deprecated ⚠️
This is deprecated since version 2.46.
Use #GTask instead.
---Propagates an error from within the simple asynchronous result to a given destination.
If the #GCancellable given to a prior call to g_simple_async_result_set_check_cancellable() is cancelled then this function will return true with @dest set appropriately.
Return
true if the error was propagated to @dest. false otherwise.