Question

以下代码在Mojave中可以正常工作。

let options = CGWindowListOption(arrayLiteral: CGWindowListOption.excludeDesktopElements, CGWindowListOption.optionOnScreenOnly, CGWindowListOption.optionOnScreenAboveWindow)
let windowList = CGWindowListCopyWindowInfo(options, kCGNullWindowID) as NSArray? as? [[String: AnyObject]]

for entry  in windowList!
{ let name = (entry[kCGWindowName as String] != nil) ? entry[kCGWindowName as String] as! String : ""
  ...

在卡塔琳娜州

entry[kCGWindowName as String]

总是零

在SO中：Detecting screen recording settings on macOS Catalina我读过，这不是启用“屏幕录像API”以及如何检测（如果已启用）所必需的。

很遗憾，我没有找到如何启用“屏幕录像API”。

如SO中所述：macOS Catalina screen recording permission我打开了自动代码签名。

在“系统偏好设置”中，我看不到添加应用程序，授予“屏幕录像”的“ +”。

如何授予屏幕录制的API权限？

Answer 1

这是一个请求访问屏幕录制的低级 API。调用此函数将提示授予屏幕录制权限。

var popup_v = document.getElementById("myPopup");

function popup() {
    popup_v.classList.toggle("show");
}
var trueorfalse = false;
document.addEventListener('click', function(event) {
 if (trueorfalse === false) }
  trueorfalse = true; // popup is there
  popup_v.classList.toggle("show");
 } else {
  popup_v.classList.remove("show");
 }
}
};

Answer 2

您需要调用任何Screen Record API函数。例如屏幕截图：

(void)showScreenRecordingPrompt {
  /*
   macos 10.14 and lower do not require screen recording permission 
   to get window titles 
  */
  if(@available(macos 10.15, *)) {
    /*
     To minimize the intrusion just make a 1px image of the upper left corner
     This way there is no real possibilty to access any private data
    */
    CGImageRef screenshot = CGWindowListCreateImage(
        CGRectMake(0, 0, 1, 1),
        kCGWindowListOptionOnScreenOnly,
        kCGNullWindowID,
        kCGWindowImageDefault);

    CFRelease(screenshot);

}

解决方案是从这里获得的：https://blog.csdn.net/lovechris00/article/details/96979960

在Catalina（kCGWindowName）中启用屏幕录制API

2 个答案: