Target/Action(Chapter 5 of Cocoa Programming for Mac OS X)

黄智勇

AppController.h

1 #import <Foundation/Foundation.h>
2
3
4 @interface AppController : NSObject
5 {
6     IBOutlet NSTextField *textField;
7     NSSpeechSynthesizer *speechSynth;
8 }
9
10 - (IBAction)sayIt:(id)sender;
11 - (IBAction)stopIt:(id)sender;
12
13 @end　　



1 #import "AppController.h"
2
3
4 @implementation AppController
5
6 - (id)init
7 {
8     [super init];
9     
10     NSLog(@"init");
11     
12     speechSynth = [[NSSpeechSynthesizer alloc] initWithVoice:nil];
13     return self;
14 }
15
16 - (IBAction)sayIt:(id)sender
17 {
18     NSString *string = [textField stringValue];
19     if([string length] == 0)
20     {
21         NSLog(@"string from %@ is of zero-length", textField);
22         return;
23     }
24     
25     [speechSynth startSpeakingString:string];
26     NSLog(@"Have started to say: %@", string);
27 }
28
29 - (IBAction)stopIt:(id)sender
30 {
31     NSLog(@"stopping");
32     [speechSynth stopSpeaking];
33 }
34
35 @end