My application interface has a handful of controls which set the parameters for a lengthy process. I would like the control which starts the process to first disable the parameter controls. This is meant to be more feedback to the user that a) the process is underway, and b) there are no choices to make until the process is complete.

The problem is that although the process charges ahead without delay, the disabled controls are taking several minutes to refresh.

Q: How can I ensure that my screen refreshes are complete before my process starts?

Thanks.