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Переднее окно с использованием CGWindowListCopyWindowInfo

В документации говорится, что список окон, возвращаемых этим методом:

CFArrayRef windowList = CGWindowListCopyWindowInfo(kCGWindowListOptionOnScreenOnly, kCGNullWindowID);

вернет окна по порядку спереди назад. Но это не так... Самое главное окно должно быть тестом, но вот из этого массива:

2011-03-12 18:18:14.221 test[982:a0f] (
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 22;
            Width = 212;
            X = 1662;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 25;
        kCGWindowMemoryUsage = 30104;
        kCGWindowName = "";
        kCGWindowNumber = 14;
        kCGWindowOwnerName = SystemUIServer;
        kCGWindowOwnerPID = 99;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 0;
        kCGWindowBounds =         {
            Height = 22;
            Width = 1920;
            X = 0;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 25;
        kCGWindowMemoryUsage = 5528;
        kCGWindowNumber = 15;
        kCGWindowOwnerName = SystemUIServer;
        kCGWindowOwnerPID = 99;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 22;
            Width = 46;
            X = 1874;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 25;
        kCGWindowMemoryUsage = 5528;
        kCGWindowName = "";
        kCGWindowNumber = 12;
        kCGWindowOwnerName = SystemUIServer;
        kCGWindowOwnerPID = 99;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 22;
            Width = 1920;
            X = 0;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 24;
        kCGWindowMemoryUsage = 218520;
        kCGWindowName = "Shared Menubar";
        kCGWindowNumber = 6;
        kCGWindowOwnerName = "Window Server";
        kCGWindowOwnerPID = 73;
        kCGWindowSharingState = 2;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 1058;
            Width = 1920;
            X = 0;
            Y = 22;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 20;
        kCGWindowMemoryUsage = 1200;
        kCGWindowNumber = 13;
        kCGWindowOwnerName = Dock;
        kCGWindowOwnerPID = 98;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 52;
            Width = 676;
            X = 622;
            Y = 1028;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 19;
        kCGWindowMemoryUsage = 157080;
        kCGWindowName = "Magic Mirror";
        kCGWindowNumber = 16;
        kCGWindowOwnerName = Dock;
        kCGWindowOwnerPID = 98;
        kCGWindowSharingState = 2;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 382;
            Width = 480;
            X = 335;
            Y = 367;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 792496;
        kCGWindowName = test;
        kCGWindowNumber = 252;
        kCGWindowOwnerName = test;
        kCGWindowOwnerPID = 982;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 807;
            Width = 1206;
            X = 321;
            Y = 157;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 4055280;
        kCGWindowName = "AppDelegate.m - test";
        kCGWindowNumber = 24;
        kCGWindowOwnerName = Xcode;
        kCGWindowOwnerPID = 132;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 967;
            Width = 960;
            X = 175;
            Y = 22;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 3817968;
        kCGWindowName = "test - Debugger Console";
        kCGWindowNumber = 31;
        kCGWindowOwnerName = Xcode;
        kCGWindowOwnerPID = 132;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 967;
            Width = 1845;
            X = 121;
            Y = 22;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 882288;
        kCGWindowName = "CocoaDev Forums - get focused window id";
        kCGWindowNumber = 80;
        kCGWindowOwnerName = "Google Chrome";
        kCGWindowOwnerPID = 244;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 784;
            Width = 885;
            X = 560;
            Y = 157;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 318768;
        kCGWindowName = "Console Messages";
        kCGWindowNumber = 125;
        kCGWindowOwnerName = Console;
        kCGWindowOwnerPID = 482;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 494;
            Width = 1167;
            X = 519;
            Y = 417;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 2441264;
        kCGWindowName = Debug;
        kCGWindowNumber = 54;
        kCGWindowOwnerName = Finder;
        kCGWindowOwnerPID = 100;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 382;
            Width = 480;
            X = 335;
            Y = 367;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 55216;
        kCGWindowName = test;
        kCGWindowNumber = 223;
        kCGWindowOwnerName = test;
        kCGWindowOwnerPID = 849;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 437;
            Width = 770;
            X = 396;
            Y = 308;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 238512;
        kCGWindowName = Applications;
        kCGWindowNumber = 19;
        kCGWindowOwnerName = Finder;
        kCGWindowOwnerPID = 100;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 437;
            Width = 770;
            X = 450;
            Y = 429;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = 0;
        kCGWindowMemoryUsage = 332720;
        kCGWindowName = Applications;
        kCGWindowNumber = 17;
        kCGWindowOwnerName = Finder;
        kCGWindowOwnerPID = 100;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
        kCGWindowWorkspace = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 14;
            Width = 1920;
            X = 0;
            Y = 22;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = "-20";
        kCGWindowMemoryUsage = 5528;
        kCGWindowName = "Backstop Menubar";
        kCGWindowNumber = 11;
        kCGWindowOwnerName = "Window Server";
        kCGWindowOwnerPID = 73;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 2;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 1080;
            Width = 1920;
            X = 0;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = "-2147483627";
        kCGWindowMemoryUsage = 1200;
        kCGWindowName = "";
        kCGWindowNumber = 10;
        kCGWindowOwnerName = Finder;
        kCGWindowOwnerPID = 100;
        kCGWindowSharingState = 1;
        kCGWindowStoreType = 1;
    },
        {
        kCGWindowAlpha = 1;
        kCGWindowBounds =         {
            Height = 1080;
            Width = 1920;
            X = 0;
            Y = 0;
        };
        kCGWindowIsOnscreen = 1;
        kCGWindowLayer = "-2147483628";
        kCGWindowMemoryUsage = 8328600;
        kCGWindowName = Desktop;
        kCGWindowNumber = 2;
        kCGWindowOwnerName = "Window Server";
        kCGWindowOwnerPID = 73;
        kCGWindowSharingState = 2;
        kCGWindowStoreType = 2;
    }
)

Что такое SystemUIServer, док-станция и волшебное зеркало? Это не мои самые популярные приложения. Спасибо!

4b9b3361

ОТВЕТЫ

Ответ 1

Возьмите копию примера приложения Apple: Son Of Grab. Затем создайте и запустите его, и у вас будет очень удобное интерактивное приложение для изучения всех окон, известных серверу окон.

Ответ на ваш вопрос заключается в том, что окна упорядочены спереди назад, но есть гораздо больше элементов пользовательского интерфейса, определяемых как окна, чем вы ожидаете. Это включает в себя меню, док, меню служб, рабочий стол и т.д. Они определяются на разных уровнях, соответствующих kCGWindowLayer в вашем выводе.

Вы хотите, чтобы первое окно определялось на стандартном уровне окна (ноль). И если вы посмотрите на свой вывод, первое окно с kCGWindowLayer == 0 на самом деле является седьмым.

Ответ 2

SystemUIServer - это верхняя панель меню. Док - это док (обычно в нижней части экрана). Я не знаком с "Волшебным зеркалом". Вы можете найти его в своей системе с помощью lsregister:

`locate lsregister` -dump

Найдите выход для "Magic Mirror".