This will disable every control on the form. However, the controls in the groupboxes arent actually disabled from this, they are disabled from the groupbox being disabled. Therefore you could use the code above to disable all controls on the form and then just immediately use.
The Selective Service System wants you to know that the requirement to register for the draft did not go away with the end of the Vietnam War. Under the law, virtually all male U.S. citizens, and male aliens living in the U.S., who are ages 18 through 25, are required to register with Selective Service.
Consequently, there is no immigration data to share with anyone. The general rule is that if a male non-citizen takes up residency in the U.S. before his 26th birthday, he must register with Selective Service. For a more detailed list of which non-citizens must register, see WHO MUST REGISTER - CHART in PDF.