如何在cocoa中获取鼠标点击事件元素

// 自定义视图类
@interface CustomView : NSView
@end

@implementation CustomView

- (void)mouseDown:(NSEvent *)event {
    NSPoint clickLocation = [event locationInWindow];
    NSPoint localClickLocation = [self convertPoint:clickLocation fromView:nil];
    
    NSView *clickedView = [self hitTest:localClickLocation];
    
    // 对点击的元素进行处理
    if (clickedView) {
        // 处理点击的元素
        NSLog(@"Clicked view: %@", clickedView);
    }
}

@end

// 在窗口中使用自定义视图类
@interface AppDelegate : NSObject <NSApplicationDelegate>
@property (nonatomic, strong) NSWindow *window;
@property (nonatomic, strong) CustomView *customView;
@end

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    // 创建窗口
    self.window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 400, 300)
                                              styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable
                                                backing:NSBackingStoreBuffered
                                                  defer:NO];
    [self.window setTitle:@"Cocoa Mouse Click Event"];
    
    // 创建自定义视图
    self.customView = [[CustomView alloc] initWithFrame:self.window.contentView.bounds];
    [self.window.contentView addSubview:self.customView];
    
    [self.window makeKeyAndOrderFront:nil];
}

@end

// 在main函数中启动应用程序
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSApplication *application = [NSApplication sharedApplication];
        AppDelegate *delegate = [[AppDelegate alloc] init];
        [application setDelegate:delegate];
        [application run];
    }
    return 0;
}