macOS Hello world help

[knott]

Hi all, i am new. i have a button A and want to call function B that returns the message "hello".
Can you please help me, Thank you

hello.h

#import <Cocoa/Cocoa.h>

@interface hello : NSObject {
	IBOutlet NSTextView *msg;
}
- (IBAction)button:(id)sender;
@end

hello.m

#import "hello.h"

@implementation hello

- (IBAction)button:(id)sender {
--- what should come here? ---
}

- (--- what should come here? ---) {
NSMutableString *msg = [[NSMutableString alloc] init];
NSString *str = [NSString stringWithFormat:@"hello"];
[msg appendString:str];
return [msg autorelease];
}

@end

 

[kainjow]

You can name your method whatever you want. Maybe call it "helloText". Using that example, you would first need to declare it in your header file as such:

- (NSString *)helloText;

Then, plug that into the implementation file:

- (NSString *)helloText
{
    ... blah blah ...
}

To call it, use:

[self helloText];

If you want to put the method's returned value into your text view, use:

[msg setString:[self helloText]];

 

[knott]

Thank you for your help!