John Levon wrote: > On Thu, Apr 03, 2003 at 06:21:27PM +0000, Angus Leeming wrote: > >> Well then, derive a class from checked_widget that does _not_ change the >> colour but does ensure that the Ok,Apply buttons retain a "memory" of >> this invalid entry. > > Well, the qt2/ way is just to add an isValid() to FloatPlacement widget, > then check that inside the dialog's isValid() method. I guess it's > equivalent though.
So you loop over all widgets after a signal is received? Then indeed it is equivalent but you are replicating ButtonController code for no good reason. Moreover: 1. I loop over only those widgets that I have said can actually be invalid. 2. my way is more flexible: a checked_widget can actually interrogate multiple GUI widgets to ensure that a GlueLength is valid. For example. ;-) -- Angus
