Qt中的Mac OS UserNotificationCenter

Question

目標是在Mac Os中顯示通知（彈出窗口+通知中心）。

Attemp＃1。創建myclass.h + myclass.mm文件（使用OBJECTIVE_SOURCES）。我能夠將通知添加到通知中心。但爲了創建彈出窗口，我應該實現NSUserNotificationCenterDelegate：shouldPresentNotification。天真地實現該方法並將類傳遞爲委託引發編譯時異常：這是* MyClass類型，而setDelegate方法需要編號

嘗試＃2。使用具有@interface指令的objective-c樣式定義myclass等等。不幸的是，編譯器無法編譯NSObject.h。看起來像Qt中不支持class objective-c，我們不得不使用C++類聲明。

任何想法，如何在C++類中實現給定的mac-os協議？

工作實例

MyClass.h

class MyClass 
{ 
public: 
    void test(); 
} 

MyClass.mm

void MyClass::test() 
{ 
    NSUserNotification *userNotification = [[[NSUserNotification alloc] init] autorelease]; 
    userNotification.title = @"Title"; 
    userNotification.informativeText = @"Test message"; 
    [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:userNotification]; 
} 

---

嘗試添加彈出窗口。在提出的方法setDelegate例外

MyClass.h

class MyClass 
{ 
public: 
    explicit MyClass(); 
    void test(); 
    BOOL shouldPresentNotification(NSUserNotificationCenter *center, NSUserNotification *notification); 
} 

MyClass.mm

MyClass::MyClass() 
{ 
    [[NSUserNotificationCenter defaultUserNotificationCenter] setDelegate:this]; 
} 

BOOL MyClass::shouldPresentNotification(NSUserNotificationCenter *center, NSUserNotification *notification) 
{ 
    return YES; 
} 

void MyClass::test() 
{ 
    NSUserNotification *userNotification = [[[NSUserNotification alloc] init] autorelease]; 
    userNotification.title = @"Title"; 
    userNotification.informativeText = @"Test message"; 
    [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:userNotification]; 
} 

Answer 1

解決方案竟然是簡單的：你應該只投這到所需的協議

MyClass::MyClass() 
{ 
    id<NSUserNotificationCenterDelegate> self = (id<NSUserNotificationCenterDelegate>)this; 
    [[NSUserNotificationCenter defaultUserNotificationCenter] setDelegate:self]; 
} 

BOOL MyClass::shouldPresentNotification(NSUserNotificationCenter *center, NSUserNotification *notification) 
{ 
    return YES; 
} 

void MyClass::test() 
{ 
    NSUserNotification *userNotification = [[[NSUserNotification alloc] init] autorelease]; 
    userNotification.title = @"Title"; 
    userNotification.informativeText = @"Test message"; 
    [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:userNotification]; 
}