iPhone内存管理问题和对象生命周期

以下是我的代码:

Phone SDK未识别的cocoa对象活动周期:

- (void) DismissWelcomeMessage: (UIAlertView *) view
{
    [view dismissWithClickedButtonIndex:0 animated:YES];
}

- (void) ShowWelcomeMessage 
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Blah" message:@"Blah Blah" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
    [self performSelector:@selector (DismissWelcomeMessage:) withObject: alert  afterDelay: WELCOME_MESSAGE_DELAY]; 

    [alert release];
}

首先调用ShowWelcomeMessage。

是因为Disclease函数在调用函数时使用传递到堆栈上的对象的副本作为参数吗?但即使这样,它也只是指向现在解除分配的对象的指针的副本吗?

在C++中删除?