前段时间，我创建了一个非常简单的 Xcode 项目来测试 CGEventTap，当我从 Xcode 运行时它工作得非常好。代码在底部。
但是，如果我在 Xcode 上创建一个新项目，粘贴下面完全相同的代码，然后从 Xcode 运行，我会得到“无法创建事件点击”。
为了让 CGEventTap 工作，我需要更改项目设置吗？我什至尝试将 info.plist 从旧测试项目复制并粘贴到新项目。
我很困惑。谢谢您的帮助！
// ViewController.swift
import Cocoa
class ViewController: NSViewController {
override func viewDidLoad() {
super.viewDidLoad()
func myCGEventCallback(proxy : CGEventTapProxy, type : CGEventType, event : CGEvent, refcon : UnsafeMutableRawPointer?) -> Unmanaged<CGEvent>? {
if type == .keyDown || type == .keyUp || type == .flagsChanged {
let keyCode = event.getIntegerValueField(.keyboardEventKeycode)
print(keyCode)
}
return Unmanaged.passRetained(event)
}
let eventMask = (1 << CGEventType.keyDown.rawValue) | (1 << CGEventType.keyUp.rawValue) | (1 << CGEventType.flagsChanged.rawValue)
guard let eventTap = CGEvent.tapCreate(tap: .cgSessionEventTap, place: .headInsertEventTap, options: .defaultTap, eventsOfInterest: CGEventMask(eventMask), callback: myCGEventCallback, userInfo: nil) else {
debugPrint("Failed to create event tap")
exit(1)
}
let runLoopSource = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0)
CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, CFRunLoopMode.commonModes)
CGEvent.tapEnable(tap: eventTap, enable: true)
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
}
// AppDelegate.swift
import Cocoa
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
func applicationDidFinishLaunching(_ aNotification: Notification) {
// Insert code here to initialize your application
}
func applicationWillTerminate(_ aNotification: Notification) {
// Insert code here to tear down your application
}
}