Apparatus and method for fault-tolerant presentation of multiple graphical displays in a process control system

A method includes executing first processes to generate graphical displays. At least one graphical display includes a user interface associated with a process system. The method also includes executing a separate second process to generate a window for presentation to an operator. The method further includes inserting the graphical displays into the window and presenting the window with the graphical displays to the operator. The method could also include executing a separate third process to control the first and second processes. The third process could represent a watchdog that terminates and restarts processes in response to detecting a fault or that prioritizes the processes. The method could further include executing a separate fourth process to provide a service, which includes a function invoked on behalf of at least one of the first and second processes.