您可以使用OSX上的键盘快捷键打开/关闭功能键吗？

我知道您可以在“键盘”的“系统偏好设置”屏幕中打开和关闭此选项，但我想知道是否可以通过快捷方式执行此操作，因为我一直这样做。

要进行以下工作，您需要在系统偏好设置»通用访问中启用辅助设备的访问权限。

打开Automator，选择Service并选择该服务不接收任何输入（靠近顶部）。

双击库中“ 实用工具”类别中的“运行AppleScript ”。使用以下内容替换新创建的操作的默认代码段：

tell application "System Preferences"
    set current pane to pane id "com.apple.preference.keyboard"
    tell application "System Events"
        tell process "System Preferences"
            click checkbox "Use all F1, F2, etc. keys as standard function keys" of tab group 1 of window "Keyboard"
        end tell
    end tell
    quit
end tell

系统偏好设置将启动，但不会显示，并会在切换设置后立即退出。

按Command-S保存，给它命名，例如Toggle Fn。结果：

转到系统偏好设置»键盘»键盘快捷键»服务，为此服务指定键盘快捷键。

我知道这篇文章很老但是无法在Mountinan Lion上运行。我发现了一个类似的片段，但删除了一些不必要的部分。

tell application "System Preferences"
    set current pane to pane "com.apple.preference.keyboard"
end tell

tell application "System Events"
    -- If we don't have UI Elements enabled, then nothing is really going to work.
    if UI elements enabled then
        tell application process "System Preferences"
            get properties

            click radio button "Keyboard" of tab group 1 of window "Keyboard"
            click checkbox "Use all F1, F2, etc. keys as standard function keys" of tab group 1 of window "Keyboard"
        end tell
        tell application "System Preferences" to quit
    else
        -- GUI scripting not enabled.  Display an alert
        tell application "System Preferences"
            activate
            set current pane to pane "com.apple.preference.universalaccess"
            display dialog "UI element scripting is not enabled. Please activate \"Enable access for assistive devices\""
        end tell
    end if
end tell

希望这可以帮助

你也可以使用KeyRemap4MacBook这样的private.xml：

<?xml version="1.0"?>
<root>
  <item>
    <name>test</name>
    <identifier>test</identifier>
    <autogen>__KeyToKey__ KeyCode::F1, VK_COMMAND | ModifierFlag::NONE, KeyCode::VK_CONFIG_TOGGLE_fn</autogen>
    <autogen>__KeyToKey__ KeyCode::BRIGHTNESS_DOWN, VK_COMMAND | ModifierFlag::NONE, KeyCode::VK_CONFIG_TOGGLE_fn</autogen>
  </item>
  <item>
    <name>fn</name>
    <identifier vk_config="true">fn</identifier>
    <autogen>__KeyToKey__ KeyCode::BRIGHTNESS_DOWN, KeyCode::F1</autogen>
    <autogen>__KeyToKey__ KeyCode::BRIGHTNESS_UP, KeyCode::F2</autogen>
    <autogen>__KeyToKey__ KeyCode::EXPOSE_ALL, KeyCode::F3</autogen>
    <autogen>__KeyToKey__ KeyCode::LAUNCHPAD, KeyCode::F4</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::KEYBOARDLIGHT_LOW, KeyCode::F5</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::KEYBOARDLIGHT_HIGH, KeyCode::F6</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::MUSIC_PREV, KeyCode::F7</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::MUSIC_PLAY, KeyCode::F8</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::MUSIC_NEXT, KeyCode::F9</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::VOLUME_MUTE, KeyCode::F10</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::VOLUME_DOWN, KeyCode::F11</autogen>
    <autogen>__ConsumerToKey__ ConsumerKeyCode::VOLUME_UP, KeyCode::F12</autogen>
    <autogen>__KeyToKey__ KeyCode::F1, KeyCode::BRIGHTNESS_DOWN</autogen>
    <autogen>__KeyToKey__ KeyCode::F2, KeyCode::BRIGHTNESS_UP</autogen>
    <autogen>__KeyToKey__ KeyCode::F3, KeyCode::EXPOSE_ALL</autogen>
    <autogen>__KeyToKey__ KeyCode::F4, KeyCode::LAUNCHPAD</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F5, ConsumerKeyCode::KEYBOARDLIGHT_LOW</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F6, ConsumerKeyCode::KEYBOARDLIGHT_HIGH</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F7, ConsumerKeyCode::MUSIC_PREV</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F8, ConsumerKeyCode::MUSIC_PLAY</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F9, ConsumerKeyCode::MUSIC_NEXT</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F10, ConsumerKeyCode::VOLUME_MUTE</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F11, ConsumerKeyCode::VOLUME_DOWN</autogen>
    <autogen>__ConsumerToKey__ KeyCode::F12, ConsumerKeyCode::VOLUME_UP</autogen>
  </item>
</root>

请参阅源代码以获取关键代码值和预定义设置。