No touch events when IME(soft keyboard) show

cocos2d-x C++
#1 
sorry my bad English.

I have trouble using IME.

I trying to detach IME when touch other position
but touch event not occur when IME showed.

there is some source code.

class MyView : public cocos2d::CCLayerColor, public cocos2d::CCIMEDelegate,  public cocos2d::CCTextFieldDelegate
{
    ....//something
   cocos2d::CCTextFieldTTF* m_textField;
}

MyView::MyView()
{
    CCTouchDispatcher* dipatcher = CCDirector::sharedDirector()->getTouchDispatcher();
    dipatcher->addTargetedDelegate(this, 0, true);
}

MyView* MyView::create(void)
{
   MyView* view = new MyView();
   view->Init();
   view->autorelease();
}

void MyView::Init(void)
{
   CCLayerColor::Init();

    m_textField = CCTextFieldTTF::textFieldWithPlaceHolder("type command", CCSizeMake(630, 50), kCCTextAlignmentLeft, fontList[0].c_str(), 36);
    m_textField->setPosition(CCPointMake(320.0f, 590.0f));
    m_textField->setColor(ccc3(0, 0, 0));
    m_textField->setDelegate(this);

    m_textField->attachWithIME();          //<---- attach IME

    this->addChild(m_textField);
}

bool ConsoleView::ccTouchBegan(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent)
{
    /*when IME attached touch event not occur*/

    CCLOG("ccTouchBegan In");
    return true;
}


thank you.