// ************************************************************************
// ************************************************************************
// Default filter function
protected int CoreHookProc(int code, IntPtr wParam, IntPtr lParam)
{
if (code < 0)
{
return(CallNextHookEx(m_hhook, code, wParam, lParam));
}
// Let clients determine what to do
HookEventArgs e = new HookEventArgs();
e.HookCode = code;
e.wParam = wParam;
e.lParam = lParam;
OnHookInvoked(e);
// Yield to the next hook in the chain
return(CallNextHookEx(m_hhook, code, wParam, lParam));
}
// ************************************************************************
// ************************************************************************
// Handles the hook event
private void CbtHookInvoked(object sender, HookEventArgs e)
{
CbtHookAction code = (CbtHookAction)e.HookCode;
IntPtr wParam = e.wParam;
IntPtr lParam = e.lParam;
// Handle hook events (only a few of available actions)
switch (code)
{
case CbtHookAction.HCBT_CREATEWND:
HandleCreateWndEvent(wParam, lParam);
break;
case CbtHookAction.HCBT_DESTROYWND:
HandleDestroyWndEvent(wParam, lParam);
break;
case CbtHookAction.HCBT_ACTIVATE:
HandleActivateEvent(wParam, lParam);
break;
}
return;
}