Re: nubie: help return an object from another class
Re: nubie: help return an object from another class
- Subject: Re: nubie: help return an object from another class
- From: Mike Abdullah <email@hidden>
- Date: Fri, 7 Apr 2006 19:00:00 +0100
It is because you are calling createPictureFromPath upon self (an
instance of Controller). You need to call it from an instance of
Function. Maybe something like:
[theFunction createPictureFromPath…
Mike.
On 7 Apr 2006, at 18:33PM, ChrisB wrote:
I have a controller class that needs to send a file path (NSString)
to function in another class that in turn returns a NSImage. I am
trying to learn how to return objects properly.
Functions.h has prototype:
- (NSImage *)createPictureFromPath:(NSString *)filePath;
Functions.m has the implementation:
- (NSImage *)createPictureFromPath:(NSString *)filePath
{
NSImage *picture;
/* do the work */
return picture;
}
Controller.m has the following:
#import "Controller.h"
#import "Functions.h"
@implementation Controller
- (IBAction)loadMySlidePicture:(id)sender
{
NSImage *returnedPicture;
returnedPicture = [self createPictureFromPath:[NSString
stringWithFormat:@"file://localhost/Users/me/Desktop/image.1.png"]];
}
@end
I get a compiler warning that 'Controller' may not respond to '-
createPictureFromPath:'
so then I tried:
Functions *myfucntions;
[myfucntions createPictureFromPath:[NSString
stringWithFormat:@"file://localhost/Users/me/Desktop/image.1.png"]];
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