各位大神，在使用QCheckBox控件時，碰到這樣的問題：定義了4個複選框，但最後一個複選框可以勾選。代碼如下：

m_checkBoxTip1 = new QCheckBox(this);
m_checkBoxTip1->setCheckable(true);
m_checkBoxTip1->resize(this->width()*30/100, this->height()*20/100);
m_checkBoxTip1->move(this->width()*10/100, this->height()*52/100);
connect(m_checkBoxTip1, SIGNAL(stateChanged(int)), this, SLOT(slotBtnClickedCheckBox(int)));

m_labelTip1 = new QLabel(QString("注意1"), this);
m_labelTip1->setAlignment(Qt::AlignLeft);
m_labelTip1->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:12px ""SimHei"";}");
m_labelTip1->resize(this->width()*30/100, this->height()*20/100);
m_labelTip1->move(this->width()*15/100, this->height()*60/100);

m_checkBoxTip2 = new QCheckBox(this);
m_checkBoxTip2->resize(this->width()*30/100, this->height()*20/100);
m_checkBoxTip2->move(this->width()*10/100, this->height()*57/100);

m_labelTip2 = new QLabel(QString("注意2"), this);
m_labelTip2->setAlignment(Qt::AlignLeft);
m_labelTip2->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:12px ""SimHei"";}");
m_labelTip2->resize(this->width()*70/100, this->height()*20/100);
m_labelTip2->move(this->width()*15/100, this->height()*65/100);

m_checkBoxTip3 = new QCheckBox(this);
m_checkBoxTip3->resize(this->width()*30/100, this->height()*20/100);
m_checkBoxTip3->move(this->width()*10/100, this->height()*62/100);

m_labelTip3 = new QLabel(QString("注意3"), this);
m_labelTip3->setAlignment(Qt::AlignLeft);
m_labelTip3->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:12px ""SimHei"";}");
m_labelTip3->resize(this->width()*70/100, this->height()*20/100);
m_labelTip3->move(this->width()*15/100, this->height()*70/100);

m_checkBoxTip4 = new QCheckBox(this);
m_checkBoxTip4->resize(this->width()*30/100, this->height()*20/100);
m_checkBoxTip4->move(this->width()*10/100, this->height()*67/100);

m_labelTip4 = new QLabel(QString("注意4"), this);
m_labelTip4->setAlignment(Qt::AlignLeft);
m_labelTip4->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:12px ""SimHei"";}");
m_labelTip4->resize(this->width()*85/100, this->height()*20/100);
m_labelTip4->move(this->width()*15/100, this->height()*75/100);

m_btnCheckBoxGroup = new QButtonGroup;
m_btnCheckBoxGroup->setExclusive(true);//設置互斥
m_btnCheckBoxGroup->addButton(m_checkBoxTip1,1);
m_btnCheckBoxGroup->addButton(m_checkBoxTip2,2);
m_btnCheckBoxGroup->addButton(m_checkBoxTip3,3);
m_btnCheckBoxGroup->addButton(m_checkBoxTip4,4);
//如果不用佈局，只能勾選最後一個複選框。如果使用以下布局代码，就可以勾选所有复选框。但之前设置空间的位置又会因为布局而打乱了。

QVBoxLayout *pMainLayout = new QVBoxLayout;

pMainLayout->addWidget(m_checkBoxTip1);
pMainLayout->addWidget(m_checkBoxTip2);
pMainLayout->addWidget(m_checkBoxTip3);
pMainLayout->addWidget(m_checkBoxTip4);
setLayout(pMainLayout);

以上所有的代碼都是在QDialog的構造函數中。請教一下：有没有办法，早保持原有设置空间的位置情况下，做到复选框可以勾选所有的，而不是只勾选最后一个呢？