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Re: Disabling a Button based on Text Field content

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
Check out my software page: http://seiryu.home.comcast.net/

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References: 
 >Disabling a Button based on Text Field content (From: Tom Burns <email@hidden>)



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