c# – 如何使用LowLevelKeyboardHook挂钩Win Tab

几句话：阻止Win Win之后Win Tab使 Windows认为Win仍然处于关闭状态,所以用Win键启动S就可以打开搜索的魅力,而不是只输入“s”…直到用户按下Win再次.不阻止它意味着Windows开始菜单将显示.我在一个难题！

使用LowLevelKeyboardHook使用Alt Tab或者使用RegisterHotKey来Win Some Ubounded Key来使用Alt Tab键入快捷方式.只有使用LowLevelKeyboardHook的Win键才会出现问题.

在下面的示例中,当检测到Win Tab组合时,我接管了Win up事件.这样就可以使得以后的按键行为就像Win键仍然处于关闭状态.

private static IntPtr HookCallback(int nCode,IntPtr wParam,IntPtr lParam)
        {
            if (nCode != HC_ACTION)
                return CallNextHookEx(_hookID,nCode,wParam,lParam);

            var keyInfo = (Kbdllhookstruct)Marshal.PtrToStructure(lParam,typeof(Kbdllhookstruct));

            if (keyInfo.VkCode == VK_LWIN)
            {
                if (wParam == (IntPtr)WM_KEYDOWN) {
                    _isWinDown = true;
                } else {
                    _isWinDown = false;

                    if (_isWinTabDetected) {
                        _isWinTabDetected = false;
                        return (IntPtr)1;
                    }
                }
            }
            else if (keyInfo.VkCode == VK_TAB && _isWinDown) {
                _isWinTabDetected = true;

                if (wParam == (IntPtr)WM_KEYDOWN) {
                    return (IntPtr)1;
                } else {
                    _isWinTabDetected = true;
                    Console.WriteLine("WIN + TAB pressed");
                    return (IntPtr)1;
                }
            }

            return CallNextHookEx(_hookID,lParam);
        }
    }
}

您可以在这里找到完整的代码(请注意,它应该在一个空的WinForms项目中替换您的Program.cs以运行)：https://gist.github.com/christianrondeau/bdd03a3dc32a7a718d62 – 按Win Tab,每次按下快捷方式时,窗体标题应该更新.

Note that the intent of hooking into this specific combination is to provide an Alt + Tab alternative without replacing Alt + Tab itself. An answer providing the ability to launching custom code using Win + Tab will also be accepted.

这是我的想法,我找不到文档.所有这些都可能成功地回答我的问题.

>告诉Windows“取消”Win而不实际触发它
>防止Windows启动“开始”菜单一次
>直接钩在Windows的Win事件中,而不是手动钩入击键(这将是我的第一选择,如果存在)

解决方法

这似乎完全符合你想要的(如果你愿意,请忽略RWin).

当您的应用失去焦点时,请慎重并注销此KB钩子！

[DllImport("user32.dll")]
    static extern short GetAsyncKeyState(System.Windows.Forms.Keys vKey);

    private static IntPtr HookCallback(int nCode,IntPtr lParam)
    {
        if (nCode == HC_ACTION)
        {
            var keyInfo = (Kbdllhookstruct) Marshal.PtrToStructure(lParam,typeof (Kbdllhookstruct));
            if ((int) wParam == WM_KEYDOWN
                && keyInfo.VkCode == VK_TAB
                && (GetAsyncKeyState(Keys.LWin) < 0 || GetAsyncKeyState(Keys.RWin) < 0))
            {
                _mainForm.Text = "Win + Tab was pressed " + (++_winTabPressCounter) + " times";
                return (IntPtr) 1;
            }
        }

        return CallNextHookEx(_hookID,lParam);
    }

在发现这种技术之前,我尝试过几件事情.
这篇文章是最有帮助的https://stackoverflow.com/a/317550/55721