Usage Examples

C# Examples

Basic Usage

using System;
using System.Runtime.InteropServices;

public class LyKeysExample
{
    // Import driver functions
    [DllImport("lykeysdll.dll")]
    private static extern bool LoadNTDriver(string driverName, string driverPath);

    [DllImport("lykeysdll.dll")]
    private static extern bool SetHandle();

    [DllImport("lykeysdll.dll")]
    private static extern void KeyDown(ushort virtualKey);

    [DllImport("lykeysdll.dll")]
    private static extern void KeyUp(ushort virtualKey);

    public static void Main()
    {
        try
        {
            // Load driver
            if (!LoadNTDriver("lykeys", "lykeys.sys"))
            {
                Console.WriteLine("Failed to load driver");
                return;
            }

            // Set handle
            if (!SetHandle())
            {
                Console.WriteLine("Failed to set handle");
                return;
            }

            // Simulate key press
            KeyDown(0x41); // Press A key
            System.Threading.Thread.Sleep(100);
            KeyUp(0x41);   // Release A key
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error: {ex.Message}");
        }
    }
}

Advanced Features

public class LyKeysAdvanced
{
    // Import more driver functions
    [DllImport("lykeysdll.dll")]
    private static extern void MouseMoveRELATIVE(long dx, long dy);

    [DllImport("lykeysdll.dll")]
    private static extern void MouseLeftButtonDown();

    [DllImport("lykeysdll.dll")]
    private static extern void MouseLeftButtonUp();

    public static void SimulateMouseClick(int x, int y)
    {
        // Move mouse
        MouseMoveRELATIVE(x, y);

        // Click left button
        MouseLeftButtonDown();
        System.Threading.Thread.Sleep(50);
        MouseLeftButtonUp();
    }
}

Python Examples

Running Example Code

• 1. Start VSCode as administrator
• 2. Open the Python example library cd Resource\lykeysdll\python_example
• 3. Create a python3.10 environment, install win32gui library using pip or conda

pip

pip install pywin32

uv

uv pip install pywin32

• 4. Run the example code gui.py can be run in two modes:

Normal

python gui.py

Debug

python gui.py --debug

Basic Usage

import ctypes
import time

# Load DLL
lykeys = ctypes.WinDLL("lykeysdll.dll")

# Set function parameter types
lykeys.LoadNTDriver.argtypes = [ctypes.c_char_p, ctypes.c_char_p]
lykeys.LoadNTDriver.restype = ctypes.c_bool

lykeys.SetHandle.restype = ctypes.c_bool

lykeys.KeyDown.argtypes = [ctypes.c_ushort]
lykeys.KeyUp.argtypes = [ctypes.c_ushort]

def main():
    try:
        # Load driver
        if not lykeys.LoadNTDriver(b"lykeys", b"lykeys.sys"):
            print("Failed to load driver")
            return

        # Set handle
        if not lykeys.SetHandle():
            print("Failed to set handle")
            return

        # Simulate key press
        lykeys.KeyDown(0x41)  # Press A key
        time.sleep(0.1)
        lykeys.KeyUp(0x41)    # Release A key

    except Exception as e:
        print(f"Error: {e}")

if __name__ == "__main__":
    main()

Advanced Features

class LyKeysAdvanced:
    def __init__(self):
        self.lykeys = ctypes.WinDLL("lykeysdll.dll")
        self._setup_functions()

    def _setup_functions(self):
        # Set function parameter types
        self.lykeys.MouseMoveRELATIVE.argtypes = [ctypes.c_long, ctypes.c_long]
        self.lykeys.MouseLeftButtonDown.restype = None
        self.lykeys.MouseLeftButtonUp.restype = None

    def click_at(self, x, y):
        # Move mouse
        self.lykeys.MouseMoveRELATIVE(x, y)

        # Click left button
        self.lykeys.MouseLeftButtonDown()
        time.sleep(0.05)
        self.lykeys.MouseLeftButtonUp()

def main():
    lykeys = LyKeysAdvanced()
    lykeys.click_at(100, 100)  # Click at coordinates (100,100)

if __name__ == "__main__":
    main()

Notes

Performance Optimization

• Use high-precision timer
• Set reasonable delays

Error Handling

• Check return values
• Catch exceptions
• Log errors

Thread Safety

• Avoid concurrent calls
• Use synchronization mechanisms
• Pay attention to resource release