Re: newbie interface problem
Re: newbie interface problem
- Subject: Re: newbie interface problem
- From: Sherm Pendley <email@hidden>
- Date: Tue, 4 Oct 2005 20:12:51 -0400
On Oct 4, 2005, at 7:07 PM, Bob Sabiston wrote:
I am having some trouble with a bunch of interface controls. On
my window, I have about 10 different text fields and buttons that I
am trying to set from my code. Each field and button I have
connected to an outlet in my class. I use something like the
following to set them:
- (void)setDuration:(double)d {
[duration setDoubleValue: d];
NSLog(@"set Duration to %lf",d);
}
where 'duration' is the outlet name for a text field.
If "duration" is the name of an outlet, the Nib loading machinery
will check for a setDuration: method, and call it to set the outlet
instead of directly assigning to the "duration" instance variable.
But since your setDuration: method takes a double instead of an id,
your outlet doesn't get set properly.
As a general rule, any time you have an instance variable (whether
it's an outlet or not) with the name "foo", the methods setFoo: and
foo should be used only to assign and retrieve that variable's value.
Renaming the above to something like setDurationDoubleValue: should
fix the problem. It makes more sense too - the above method isn't
changing the "duration" variable to point to another object, it's
modifying the object to which it currently points.
sherm--
Cocoa programming in Perl: http://camelbones.sourceforge.net
Hire me! My resume: http://www.dot-app.org
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