如何调用笔记本键盘灯的驱动

nyazhou

以我华硕的笔记本电脑为例，通常是根据armoury crate来控制键盘灯。我希望自己实现一个（比如说按下某个键让键盘灯亮起）。我下一步应该怎么做，应该怎么分析相关驱动的调用方式？

bester

https://www.52pojie.cn/thread-1455086-1-1.html

看看大佬的分析贴

nyazhou

看了下好像键盘灯是没法单个打开的，所以我准备利用capslock上的灯，按照了一个“让USB键盘的LED灯听你的！（不干扰使用）“的教程，但是这边遇到一个设备路径的问题，我不知道填什么
”

[C#] 纯文本查看 复制代码

namespace KeybdLightCtrl
{
    internal class StatusChange
    {
        [DllImport("kernel32.dll")]
        static extern IntPtr CreateFile(string lpFileName, uint dwDesiredAccess,
        uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition,
        uint dwFlagsAndAttributes, IntPtr hTemplateFile);

        [DllImport("kernel32.dll")]
        static extern bool DeviceIoControl(IntPtr hDevice, uint dwIoControlCode,
        IntPtr lpInBuffer, uint nInBufferSize,
        IntPtr lpOutBuffer, uint nOutBufferSize,
        out uint lpBytesReturned, IntPtr lpOverlapped);

        private const uint GENERIC_WRITE = 0x40000000;
        private const uint OPEN_EXISTING = 3;
        private const uint FILE_ANY_ACCESS = 0;
        private const uint METHOD_BUFFERED = 0;
        private const uint FILE_DEVICE_KEYBOARD = 0x0000000b;

        private uint IOCTL_KEYBOARD_SET_INDICATORS = CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0002, METHOD_BUFFERED, FILE_ANY_ACCESS);
        private uint IOCTL_KEYBOARD_QUERY_TYPEMATIC = CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0008, METHOD_BUFFERED, FILE_ANY_ACCESS);
        private uint IOCTL_KEYBOARD_QUERY_INDICATORS = CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0010, METHOD_BUFFERED, FILE_ANY_ACCESS);

        static uint CTL_CODE(uint DeviceType, uint Function, uint Method, uint Access)
        {
            return ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method);
        }

        
        public void change()
        {
            IntPtr hKeyboard = CreateFile(@"\\.\Device\00000088", GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
            if (hKeyboard == IntPtr.Zero || hKeyboard.ToInt32() == -1)
            {
                MessageBox.Show("failed to open keybd device");
                return;
            }

            //用marshal分配一块空内存（pbuffer）
            KeyboardIndicatorParameters buffer = new KeyboardIndicatorParameters();
            buffer.UnitId = 0;
            buffer.LedFlags = Locks.None;
            IntPtr pbuffer = Marshal.AllocHGlobal(Marshal.SizeOf(buffer));
            uint retlen;
            DeviceIoControl(hKeyboard, IOCTL_KEYBOARD_QUERY_INDICATORS, IntPtr.Zero, 0, pbuffer, (uint)Marshal.SizeOf(buffer), out retlen, IntPtr.Zero);

            //解析pbuffer，转换capslock灯状态
            KeyboardIndicatorParameters updatedBuffer = Marshal.PtrToStructure<KeyboardIndicatorParameters>(pbuffer);
            Locks mask = Locks.KeyboardCapsLockOn;
            updatedBuffer.LedFlags = updatedBuffer.LedFlags ^ mask;
            Marshal.StructureToPtr(updatedBuffer, pbuffer, false);

            //设置新状态
            bool success = DeviceIoControl(hKeyboard, IOCTL_KEYBOARD_SET_INDICATORS, pbuffer, (uint)Marshal.SizeOf(buffer), IntPtr.Zero, 0, out retlen, IntPtr.Zero);
            if (!success)
            {
                MessageBox.Show("failed");
                return;
            }
            return;
        }

        struct KeyboardIndicatorParameters
        {
            public ushort UnitId;
            public Locks LedFlags;
        }

        [Flags]
        public enum Locks : ushort
        {
            None = 0,
            KeyboardScrollLockOn = 1,
            KeyboardNumLockOn = 2,
            KeyboardCapsLockOn = 4
        }
    }
}

就是IntPtr hKeyboard = CreateFile(@"\\.\Device\00000088", GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);这行第一个参数。我device manager的keyboard里面有四个键盘，三个HID一个PS/2。求教应该填什么进去？

白水剑心

我是联系朝阳K系列的，不知道有没有灯？

chishingchan

我的笔记本也需要按 Fn + F6 禁用触摸板！因为打字时误触时光标会跑，休眠后也要再按一次热键。也没想到有什么办法可以永久禁用触摸板。

zyj5502

chishingchan 发表于 2024-6-28 08:55
我的笔记本也需要按 Fn + F6 禁用触摸板！因为打字时误触时光标会跑，休眠后也要再按一次热键。也没想到有 ...

电脑设置里面可以设置有外接鼠标时停用触摸板（因个人电脑而异）

vspeitao

chishingchan 发表于 2024-6-28 08:55
我的笔记本也需要按 Fn + F6 禁用触摸板！因为打字时误触时光标会跑，休眠后也要再按一次热键。也没想到有 ...

直接禁用驱动试试

CarlZ

chishingchan 发表于 2024-6-28 08:55
我的笔记本也需要按 Fn + F6 禁用触摸板！因为打字时误触时光标会跑，休眠后也要再按一次热键。也没想到有 ...

禁用驱动 ，想用了再去启用。

你好，再见

开源的g-helper可以研究一下

netsome

键盘灯确实可以玩出花来。