Re: Unimplemented Selector Warning 3
Re: Unimplemented Selector Warning 3
- Subject: Re: Unimplemented Selector Warning 3
- From: Andy Lee <email@hidden>
- Date: Tue, 21 Aug 2012 11:07:43 -0400
On Aug 21, 2012, at 2:18 AM, Gerriet M. Denkmann <email@hidden> wrote:
> (I hope you don't see this more than once - some problems with Mail)
>
>
> I messed around with my Build Settings - activating more warnings. (Almost) always a good idea.
>
> I have:
> NSView *someSubclassOfView = ....;
> if ( [ someSubclassOfView respondsToSelector: @selector(getRow:column:forPoint:) ] )
> {
> // this is a browser or a matrix or something else
> // do something...
> }
>
> And get a warning: "Unimplemented selector 'getRow:column:forPoint:'".
What line is the warning coming from? If you are doing
BOOL isOnCell = [someSubclassOfView getRow:&row
column:&column
forPoint:point];
The problem might be that someSubclassOfView is declared as an NSView. You can fix with a cast:
BOOL isOnCell = [(NSTableView *)someSubclassOfView getRow:&row
column:&column
forPoint:point];
> Same problem with:
> #import "Server.h" // declares: - (void) reset;
> [ currentServers makeObjectsPerformSelector: @selector(reset) ];
>
> And:
> #import "SomeClass.h" // declares: - (void) someMethod: something;
> SomeClass *someClass = ...;
> [ someClass performSelectorOnMainThread: @selector(someMethod:) withObject: nil waitUntilDone: NO ];
I don't know about these. Is the warning definitely coming from the performSelector lines?
What are the warnings you activated? I can try to reproduce the problem.
--Andy
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