public void InstallKeyboardHook(LowLevelHookCallback callback)
{
if (KeyboardHooked)
{
throw new InvalidOperationException("Keyboard hook already installed");
}
InvokeAction(new Action(() => {
HookKeyboard(callback);
}));
}
public void InstallMouseHook(LowLevelHookCallback callback)
{
if (MouseHooked)
{
throw new InvalidOperationException("Mouse hook already installed");
}
InvokeAction(new Action(() => {
HookMouse(callback);
}));
}
private void HookMouse(LowLevelHookCallback callback)
{
mouseCallback = callback;
using Process curProcess = Process.GetCurrentProcess();
using ProcessModule curModule = curProcess.MainModule;
MouseHookProc = SetWindowsHookEx(WH_MOUSE_LL, mouseCallback, GetModuleHandle(curModule.ModuleName), 0);
if (MouseHookProc == IntPtr.Zero)
{
MouseHooked = false;
throw new Win32Exception();
}
MouseHooked = true;
}
private void HookKeyboard(LowLevelHookCallback callback)
{
keyboardCallback = callback;
using Process curProcess = Process.GetCurrentProcess();
using ProcessModule curModule = curProcess.MainModule;
KeyboardHookProc = SetWindowsHookEx(WH_KEYBOARD_LL, keyboardCallback, GetModuleHandle(curModule.ModuleName), 0);
if (KeyboardHookProc == IntPtr.Zero)
{
KeyboardHooked = false;
throw new Win32Exception();
}
KeyboardHooked = true;
}
public static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelHookCallback lpfn, IntPtr hMod, uint dwThreadId);
