somethings about QSplitter

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m_splitter = new QSplitter(Qt::Horizontal);
m_splitter->addWidget(this->m_leftWidget);
m_splitter->addWidget(this->m_contentWidget);
QList<int> heights;
heights.push_back((14/15)*screenX);
heights.push_back(screenX/15);
m_splitter->setSizes(heights);
// this->m_splitter->setStretchFactor(0, -2);
// this->m_splitter->setStretchFactor(1, -1);

this->m_splitter->setHandleWidth(2);
//this->m_leftWidget->setFixedWidth(4);

//this->m_leftWidget->setMinimumWidth(40);
//this->m_leftWidget->setMaximumWidth(250);