Sets @stream to have actions pending. If the pending flag is already set or @stream is closed, it will return %FALSE and set @error.
Return: %TRUE if pending was previously unset and is now set.
GException on failure.
See Implementation
Sets @stream to have actions pending. If the pending flag is already set or @stream is closed, it will return %FALSE and set @error.
Return: %TRUE if pending was previously unset and is now set.