The preferred way to do this is to prevent the user clicking the
button if it's not appropriate by greying it out.
This is far more user-friendly than rebuking a user for having the
audacity to click your button when they shouldn't have, even though
they had no visual cue that they shouldn't. The "permit then rebuke"
form of input validation is the hallmark of bad UI design. Sadly, it's
all too common.
G.
On 6 Jul 2008, at 5:04 pm, Jeff Brown wrote:
I've set up matrix with 2 radio buttons (1 and 2) with a delegate
method that gets run when the matrix gets clicked. Lets say radio
button 1 is highlighted and someone clicks on radio button 2. The
delegate method has some code that checks whether the radio buttons
are allowed to be changed from 1 to 2 and if not, sends an alert to
the user.
My problem is how can I stop the radio buttons themselves changing
from 1 to 2. When programming in Visual Basic there was a method
that stopped the action from completing. Is there something similar
I can do here or some other way.
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