Chris Angelico wrote: > On Fri, Aug 8, 2014 at 6:57 PM, Paul Rudin <paul.nos...@rudin.co.uk> > wrote: >> Chris Angelico <ros...@gmail.com> writes: >> >>> On Fri, Aug 8, 2014 at 3:57 PM, Jaydeep Patil <patil.jay2...@gmail.com> >>> wrote: >>>> I mean to say, One GUI should be always on top from start to end of >>>> code running. So that user cant do any other operation. >>>> I am using wxpython >>> >>> Ah, that would be called "System Modal", and should be reserved for >>> absolutely critical system-wide alerts. It's also a feature that's >>> simply not available to most user-space programs, and not available in >>> most GUI toolkits. >>> >>> Short answer: Don't. >> >> There are commercial software packages that do this sort of >> thing. Examsoft is one - the idea being that people can take exams >> without access to other software at the same time (so that, for example, >> they could look at previously prepared notes). > > Yeah; like I said, "Don't" is the short answer. There will be > exceptions, some extremely rare situations when system modality is > correct; but fundamentally, it's impossible to use GUI software to > control what a person does with a computer
There are exceptions, but it's impossible? Impossible except for the exceptions, I presume :-P > (for instance, on all my > Linux systems, I can hit Ctrl-Alt-F1 to switch away from the GUI > altogether). Does that work when xscreensaver or equivalent has locked the system? If so, that's a security vulnerability. > So I'm dubious about its value for anything that isn't an > absolutely critical alert. Well, there's at least two use-cases I can think of: * screen locking, as in screen savers; * login screens; * exam software; Eh, that is, at least three use-cases: * screen locking; * login screens; * exam software; * emulating full screen arcade games; Um, among the use-cases are, screen locking, login screens, exam software, full-screen games, critical system alerts, and, of course, the most popular reason of all: * my application is SOOOOO SPECIAL that it deserves to take over the entire GUI Just Because I Can. I don't know any platform-independent GUI toolkits which offer this out of the box, but I expect that there's probably a way to do it in a platform specific way on each platform you wish to support. Either that, or the OP can google for <wxpython "system modal"> (including the quotes) and see what comes up. I'd do so myself, except some damn fool Javascript code running on some rubbish web site just crashed my browser. Again. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
