QSqlTableModel配合QTableView设置单元格对齐方式和前景色等

方法：

创造model类继承QSqlTableModel，然后重载data函数

头文件：

#ifndef INCOME_MODEL_H
#define INCOME_MODEL_H


#include <QSqlTableModel>

class Income_Model : public QSqlTableModel
{
public:
    Income_Model(QObject * parent = 0, QSqlDatabase db = QSqlDatabase());
    ~Income_Model();
    QVariant data(const QModelIndex &idx, int role = Qt::DisplayRole) const;
};


#endif // INCOME_MODEL_H

源文件：

#include "income_model.h"
#include <QColor>
#include <QFont>

Income_Model::Income_Model(QObject * parent, QSqlDatabase db) : QSqlTableModel(parent,db)
{

}

Income_Model::~Income_Model()
{

}

QVariant Income_Model::data(const QModelIndex &idx, int role) const
{
    QVariant value  = QSqlTableModel::data(idx,role);
    if(Qt::TextAlignmentRole == role)
    {
        value   = int(Qt::AlignCenter | Qt::AlignHCenter);
        return value;
    }
    if(Qt::ForegroundRole == role)
    {
        if(3 == idx.column())
            return QVariant(QColor(255,144,144));
    }
    if(Qt::FontRole == role)
    {
        if(3 == idx.column())
        {
            QFont font;
            font.setBold(true);
            return QVariant(font);
        }
    }
    return value;
}

其中：

Qt::TextAlignmentRole控制对齐方式
Qt::ForegroundRole控制前景色
Qt::FontRole控制字体
....