QT之QCombox文字内容默认居中

#ifndef CCOMBOX_H
#define CCOMBOX_H

#include<QComboBox>
#include<QMouseEvent>
#include <QPaintEvent>
#include<QPainter>
class CCombox: public QComboBox
{
   
    Q_OBJECT
public:
    CCombox(QWidget *parent