/// <summary>
        /// Tracks mouse ups.  If the user mouse-ups over the same item they
        /// mouse down'd over, that option is selected and the menu closes.
        /// </summary>
        private void TrackMouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            //����OK�H
            if( !m_isReady ) return;

            //�v���b�V���O�t�H���X
            m_pressing = false;

            if( m_pressedOption == m_lastHoverOption )
            {
                //�����ꂽ���j���[�I�v�V�����̎擾
                m_selectedOption = m_pressedOption;

                //�����ꂽ���j���[�I�v�V�����̃��C�Y�G���h�z�[�o�[
                m_selectedOption.RaiseEndHover();

                //�����ꂽ���j���[�I�v�V�����̃��C�Y�N���b�N
                m_selectedOption.RaiseClick();

                // ������‚���I
                m_lastHoverOption = null;

                //�‚���I�v�V�������L���ȃ��j���[�̏ꍇ�‚���
                if (m_selectedOption.m_click_close)
                {
                    TriggerClose();
                }
                //TriggerClose();
            }
            else
            {
                // They canceled the selection.
                //RepaintMenu();
            }
        }
        /// <summary>
        /// Tracks mouse ups.  If the user mouse-ups over the same item they
        /// mouse down'd over, that option is selected and the menu closes.
        /// </summary>
        private void TrackMouseUp(
            object sender, 
            System.Windows.Forms.MouseEventArgs e
            )
        {
            if( !m_isReady ) return;

            m_pressing = false;

            if( m_pressedOption == m_lastHoverOption )
            {
                // They selected an option.  Deal with events.
                m_selectedOption = m_pressedOption;
                m_selectedOption.RaiseEndHover();
                m_selectedOption.RaiseClick();

                // Close us!
                m_lastHoverOption = null;
                TriggerClose();
            }
            else
            {
                // They canceled the selection.
                RepaintMenu();
            }
        }