qt操作excel文件的方法

Qt提供了QAxObject类来操作Microsoft Excel文件。以下是Qt操作Excel文件的基本步骤：

1. 引入头文件

#include <QAxObject>

2. 创建Excel对象

QAxObject *excel = new QAxObject("Excel.Application", this);

3. 打开Excel文件

QAxObject *workbooks = excel->querySubObject("Workbooks");
QAxObject *workbook = workbooks->querySubObject("Open(const QString&)", "excel_file_path");

4. 获取工作表

QAxObject *worksheets = workbook->querySubObject("Worksheets");
QAxObject *worksheet = worksheets->querySubObject("Item(int)", 1); //获取第一个工作表

5. 操作单元格

QAxObject *cell = worksheet->querySubObject("Cells(int,int)", row, column);
cell->setProperty("Value", cell_value); //设置单元格值
QString cell_value = cell->property("Value").toString(); //获取单元格值

6. 保存Excel文件

workbook->dynamicCall("Save()");

7. 关闭Excel文件

workbook->dynamicCall("Close()");
excel->dynamicCall("Quit()");

完整代码示例：

#include <QAxObject>

void operateExcel()
{
    QAxObject *excel = new QAxObject("Excel.Application", this);
    QAxObject *workbooks = excel->querySubObject("Workbooks");
    QAxObject *workbook = workbooks->querySubObject("Open(const QString&)", "excel_file_path");
    QAxObject *worksheets = workbook->querySubObject("Worksheets");
    QAxObject *worksheet = worksheets->querySubObject("Item(int)", 1);

    QAxObject *cell = worksheet->querySubObject("Cells(int,int)", 1, 1);
    cell->setProperty("Value", "Hello, world!");

    workbook->dynamicCall("Save()");
    workbook->dynamicCall("Close()");
    excel->dynamicCall("Quit()");
}