I noticed that in the latest release Shell's created with the SWT.CLOSE
flag still show the "X" button in the upper right corner instead of "OK".
The Shell constructor contains the comment below addressing this issue and
I'm not sure if this change is intentional so I wanted to check before
filing a bug.
Comment from Shell.java, line 261:
//For WM related devices, make right-upper ok button to disable replacing
with X button for minimizing shell only.