OSX Quartz事件点击:事件类型以及如何编辑事件

#import <Cocoa/Cocoa.h>

@interface AppDelegate : NSObject <NSApplicationDelegate>
@end

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    // 创建CGEventTap
    CGEventMask eventMask = CGEventMaskBit(kCGEventLeftMouseDown);
    CFMachPortRef eventTap = CGEventTapCreate(kCGHIDEventTap, kCGHeadInsertEventTap, 0, eventMask, myCGEventCallback, NULL);
    if (!eventTap) {
        NSLog(@"Failed to create event tap");
        return;
    }
    
    // 启动CGEventTap
    CFRunLoopSourceRef runLoopSource = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0);
    CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopCommonModes);
    CGEventTapEnable(eventTap, true);
    CFRunLoopRun();
}

CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type, CGEventRef event, void *refcon) {
    if (type == kCGEventLeftMouseDown) {
        NSLog(@"Left mouse button down");
    }
    return event;
}

@end

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        return NSApplicationMain(argc, argv);
    }
}