protected HookProc m_KbdHookProc; // 鍵盤掛鉤函式指標
protected void OnHookInvoked(KeyboardHookEventArgs args)
{
if (m_HookEvent != null)
{
m_HookEvent(this, args);
}
}
protected int KeyboardHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
{
return(WinKernel.CallNextHookEx(m_HookHandle, nCode, wParam, lParam));
}
// 當按鍵按下及鬆開時都會觸發此函式，故先判斷是按下還是鬆開。
bool isPressed = (lParam.ToInt32() & 0x80000000) == 0;
Keys key = (Keys)wParam.ToInt32();
KeyboardHookEventArgs args = new KeyboardHookEventArgs(nCode, wParam.ToInt32(), lParam.ToInt32(), key, isPressed);
OnHookInvoked(args);
if (args.IsHandled)
{
return(1);
}
return(WinKernel.CallNextHookEx(m_HookHandle, nCode, wParam, lParam));
}