office API sample 

Boolean CFReadStreamSetClient(CFReadStreamRef stream, CFOptionFlags streamEvents, CFReadStreamClientCallBack clientCB, CFStreamClientContext *clientContext);

callback function define 

typedef void (*CFReadStreamClientCallBack)(CFReadStreamRef stream, CFStreamEventType type, void *clientCallBackInfo);

how to use? 

1 define use typedef style 

void AFReadStreamCallBack

(

 CFReadStreamRef aStream,

 CFStreamEventType eventType,

 void* inClientInfo

 );

void AFReadStreamCallBack

(

 CFReadStreamRef aStream,

 CFStreamEventType eventType,

 void* inClientInfo

 )

{

//do something

}

2 setup callback 

    CFStreamClientContext context = {0, (__bridge void *)(self), NULL, NULL, NULL};

    CFReadStreamSetClient(

                          stream,

                          kCFStreamEventNone|kCFStreamEventHasBytesAvailable | kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered|kCFStreamEventOpenCompleted,

                          AFReadStreamCallBack,

                          &context);

    CFReadStreamScheduleWithRunLoop(stream, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);

design callback sample code

#import "AppDelegate.h"

typedef void (*PF)(int x);

void func(int x)

{

    NSLog(@"func x*x=%d",x*x);

}

void caller(PF pf,int a,int b)

{

    int x = a+b;

    pf(x);

}

@implementation AppDelegate

-(void)caller:(PF)pf a:(int)a b:(int) b

{

    int x = a+b;

    pf(x);

}

- (void)dealloc

{

    [super dealloc];

}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification

{

    PF p1  = func;

    caller(p1,9,10);

    [self caller:p1 a:199 b:8];

    // Insert code here to initialize your application

}

caller 实现私有，指定义callback样式，不实现，具体实现是使用时候根据业务逻辑实现

C 语言的callback 和ObjC里面的protocol 是不是十分类似？

NSString *artist=@"王杰";

NSString *song=@"什么时候才能够";

转换后

Artist=8B737067&Title=C04E484EF66519504D62FD801F59

算法

-(NSString*)toUnichar:(NSString*)src

顺便推荐一款内码查询器UnicodeChecker，官方网站 http://earthlingsoft.net

UsingBlocksAsContextInfo - Demonstrates how to implement Objective-C "blocks" passed in as the 'contextInfo' to NSAlert, helping to handle the alert result.

// This is a quick tip on how to use the context info as a block parameter.

// You can use this type of pattern for any methods that have a delegate/selector/contextInfo pattern.

- (void)btnShowAlertClicked:(id)sender  {

    NSAlert *alert = [NSAlert alertWithMessageText:@"Alert Message"

                                     defaultButton:@"Default Button"

                                   alternateButton:@"Alternate Button"

                                       otherButton:@"Other Button"

                         informativeTextWithFormat:@"Informative Text"];

    BOOL someLocalVariable = YES;

    // We create a block that can easily access local variables to this method.

    // This is much easier than trying to package them all up into a contextInfo object

    void (^blockCallback)(NSInteger) = ^(NSInteger returnCode) {

        // Inside the block callback we can easily access locals

        if (someLocalVariable) {

            if (returnCode == NSAlertDefaultReturn) {

                [button setTitle:@"Default Return Button Clicked!"];

            } else {

                [button setTitle:@"Something else clicked...try again."];

            }

        }

    };

    // We copy the block, since it needs to stay alive for longer than the current scope

    [alert beginSheetModalForWindow:self.window

                      modalDelegate:[self class]

                     didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)

                        contextInfo:Block_copy(blockCallback)];

}

+ (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void (^)(NSInteger returnCode))continuationHandler {

    continuationHandler(returnCode);

    // The block must always be retained before the first call. This is the matching release

    Block_release(continuationHandler);

}

static void _processData(AppDelegate *self, NSInteger i) {

    // Notice that the _window can be accessed here, even though it is a private ivar

    // A compiler error (or warning) will happen if this method was outside the @implementation scope of AppDelegate.

    NSLog(@"Processing %d in window %@", i, self->_window);

}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {

    for (NSInteger i = 0; i < 200; i++) {

        _processData(self, i);

    }

}

NSWindowController

- (id)initWithWindow:(NSWindow *)window

或者使用 - (NSString *)windowNibName

NSWindowController *controller = [[c alloc] init];

    if (_windowControllers == nil) {

        _windowControllers = [NSMutableArray new];

    }

    [_windowControllers addObject:controller];

    [controller showWindow:self];//显示Window,self 为NSWindowController

    [controller release];

注册窗口关闭通知

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowClosed:) name:NSWindowWillCloseNotification object:nil];

处理关闭窗口通知，移出不需要的Window

- (void)_windowClosed:(NSNotification *)note {

    NSWindow *window = [note object];

    for (NSWindowController *winController in _windowControllers) {

        if (winController.window == window) {

            [[winController retain] autorelease]; // Keeps the instance alive a little longer so things can unbind from it

            [_windowControllers removeObject:winController];

            break;

        }

    }

}

#pragma mark KVO

- (void)observeValueForKeyPath:(NSString *)keyPath

                      ofObject:(id)object

                        change:(NSDictionary *)change

                       context:(void *)context

{

NSLog(@"dict= %@ obj= %@,keypath=%@",change,object,keyPath);

//    if (object ==xxx) {

//        if ([keyPath isEqualToString:@"title"]) {

//            

//        }else if ([keyPath isEqualToString:@"name"]) {

//            

//        }

//    } else if(object == bbb){

//        

//    }

    if (context == 123) {

    } else if(context == 456){

    }

}

-(void)traceObj:(Entry*)obj

{

[obj addObserver:self

  forKeyPath:@"title"

options:0

context:123];

    [obj addObserver:self

  forKeyPath:@"name"

options:0

context:456];

    [objB addObserver:self

  forKeyPath:@"name"

options:0

context:NULL];

}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

-(void)viewDidLoad

{

[super viewDidLoad];

Entry *entry =[[Entry alloc] init];

[self traceObj:entry];

[entry setValue:@"abc" forKey:@"title"];

id msg=[entry valueForKey:@"titl"];

NSLog(@"%@",msg);

[[NSNotificationCenter defaultCenter] addObserver:self 

selector:@selector(keyboardShow:)

name:UIKeyboardWillShowNotification 

  object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self 

selector:@selector(keyboardShow:)

name:UIKeyboardWillHideNotification

  object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self 

selector:@selector(textChanged:)

name:UITextFieldTextDidChangeNotification

  object:nil];

}

-(void)textChanged:(NSNotification*)noti

{

NSLog(@"%@ %@",input.text,[noti userInfo]);

NSString *sTr =input.text;

if ([sTr length] >=10) {

input.text = [sTr substringWithRange:NSMakeRange(0,9)];

UIAlertView *alert=[[[UIAlertView alloc] initWithTitle:@"title" message:@"message" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:@"2",@"cancel",nil] autorelease];

[alert show];

}

NSMutableArray *array=[[NSMutableArray alloc] initWithCapacity:10];

}

-(void)keyboardShow:(NSNotification*)noti

{

if ([[noti name] isEqualToString:UIKeyboardWillShowNotification]) {

input.center = CGPointMake(input.center.x, input.center.y-200);

} else {

input.center = CGPointMake(input.center.x, input.center.y+200);

}

}

######################################

@implementation Entry

@synthesize title;

@synthesize price;

@synthesize image53;

@synthesize image;

-(id)valueForUndefinedKey:(NSString *)key

{

return [NSString stringWithFormat:@"%@ not have value for key %@",self,key];

}

-(void)setValue:(id)value forUndefinedKey:(NSString *)key

{

}

#!/bin/sh

apppath=`xcodebuild |grep Validation|awk '{print $2}'`

sign='iPhone Distribution:Yarshure Kong Healthcare Communications Co., Ltd.'

ipapath=`pwd`'/BlanceBall.ipa'

echo $apppath

/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/PackageApplication  -s "$sign" "$apppath" -o "$ipapath"

scp "$ipapath" macgeeks:~/macgeeks.cn/bbs/apps/