// ************************************************************************
// ************************************************************************
// 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);
}
protected void OnHookInvoked(HookEventArgs e)
{
if (HookInvoked != null)
HookInvoked(this, e);
}
/// <summary>
/// Handle messages for context menu
/// </summary>
private void WindowsHookInvoked(object sender, HookEventArgs e)
{
CWPSTRUCT cwp = (CWPSTRUCT)Marshal.PtrToStructure(e.lParam, typeof(CWPSTRUCT));
if (_oContextMenu2 != null &&
(cwp.message == (int)WM.INITMENUPOPUP ||
cwp.message == (int)WM.MEASUREITEM ||
cwp.message == (int)WM.DRAWITEM))
{
if (_oContextMenu2.HandleMenuMsg((uint)cwp.message, cwp.wparam, cwp.lparam) == S_OK)
{
return;
}
}
if (_oContextMenu3 != null && cwp.message == (int)WM.MENUCHAR)
{
if (_oContextMenu3.HandleMenuMsg2((uint)cwp.message, cwp.wparam, cwp.lparam, IntPtr.Zero) == S_OK)
{
return;
}
}
return;
}