int ProcessKeyboardEvent(int code, IntPtr wParam, ref KBDLLHOOKSTRUCT lParam)
{
bool cancel = false;
if (code >= 0 && lParam.scanCode != 0)
{
KeyboardEvent ev = null;
switch (wParam.ToInt32())
{
case 0x0100: ev = OnKeyDown; break; // 0x0100 = WM_KEYDOWN
case 0x0101: ev = OnKeyUp; break; // 0x0101 = WM_KEYUP
case 0x0104: ev = OnSystemKeyDown; break; // 0x0104 = WM_SYSKEYDOWN
case 0x0105: ev = OnSystemKeyUp; break; // 0x0105 = WM_SYSKEYUP
}
// if any handler returns true, input will be canceled.
if (ev != null)
{
foreach (var d in ev.GetInvocationList())
{
cancel |= (bool)d.DynamicInvoke((Keys)lParam.vkCode, lParam.scanCode, lParam.flags);
}
}
}
int result = CallNextHookEx(hHook, code, wParam, ref lParam);
return((result != 0 || cancel) ? 1 : 0);
}
