Re: Disabling a Button based on Text Field content
Re: Disabling a Button based on Text Field content
- Subject: Re: Disabling a Button based on Text Field content
- From: Nick Zitzmann <email@hidden>
- Date: Thu, 31 Jul 2003 16:13:37 -0700
On Thursday, July 31, 2003, at 03:21 PM, Tom Burns wrote:
I'm new to the list, but searched the archives and couldn't find the
answer I needed. I need a way to disable a button if a certain text
field is empty, then re-enable it once the user inputs a string.
Try setting the text field's delegate to some object that can control
the button, and then do something like this, where "theTextField" is
the NSTextField in question and "button" is the NSButton...
(Warning: Written in Mail, not tested, use at your own risk, etc.)
- (void)textDidEndEditing:(NSNotification *)notification
{
if ([notification object] == theTextField)
{
if ([[textField stringValue] isEqualToString:@""])
{
[button setEnabled:NO];
}
else
{
[button setEnabled:YES];
}
}
}
If you need this to run when the text is simply changed, rather than
when the editing is finished, then change the above method to
"textDidChange:" instead.
Nick Zitzmann
AIM/iChat: dragonsdontsleep
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