[Qt QAxObject] Use QAxObject to read and write Excel tables efficiently and arbitrarily

1. How to operate Excel table

  QtThe official website library does not include Microsoft Excelthe operation library of . Microsoft ExcelThere are many options for the operation library of , including those based on the Windowssystem itself ActiveX, , Qt Xlsx, xlsLib, LibXL, qtXLS, BasicExcel.Number Duck

Library	.xls	.xlsx	read	Write	platform
Qt Xlsx	❌	✔️	✔️	✔️	Cross-platform
xls	✔️	❌	❌	✔️	Cross-platform
libxls	✔️	❌	❌	✔️	Cross-platform
libXL	✔️	✔️	✔️	✔️	Cross-platform
ActiveX	✔️	✔️	✔️	✔️	Windows native
qtXLS	✔️	❌	✔️	✔️	Windows
BasicExcel	✔️	❌	✔️	✔️	Windows
Number Duck	✔️	❌	✔️	✔️	Windows，Linux

  This article uses objects based on , which Windowsis to implement reading and writing tables.ActiveXQtQAxObjcetExcel

2. Introduction to QAxObject

  Before introducing QAxObject, let's first take a brief look at the WindowsComponent COMObject Model, which COMis a platform-independent distributed object-oriented system used to create binary software components that can interact. COMIs (the underlying technology for compound documents,) and (the component that supports Microsoft) technology. Objects can be created using a variety of programming languages . Object-oriented languages ​​(such as ) provide programming mechanisms that simplify the implementation of objects. These objects can be located in a single process, in other processes, or even on remote computers.OLEActiveXInternetCOMC++COM

COMYou can view the introduction of component model objects at: https://download.csdn.net/download/qq_36393978/88268235

QtThe in   is QAxObjectan COMencapsulation of the component model object, QAxObjectderived from QAxBase, QAxBaseproviding a set of objects that can be directly accessed APIthrough IUnknownpointers COM. The specific structure is as shown below.

  The Windowson Excelis also such an COMobject. Therefore, you can use in Qtto QAxObjcetimplement Excelthe operation on. The basic operation process is as follows:

  As shown in the figure above Excel, the hierarchical structure of , Excel.Applicationobject → WorkBooksobject → WorkBookobject → WorkSheetobject → Rangeobject, 1each object excelhas one Applicationobject, and 1each Applicationobject consists of multiple Workbookobjects. These objects are uniformly managed Workbookby the object. There are several objects under the object . These objects are uniformly managed by the object. , the object below corresponds to the table unit inside. The arrow indicates obtaining its sub-object. The acquisition method requires calling the function to obtain the sub-object instance. Each sub-object calls the function to perform its own specific operation.WorkbooksWorkbookWorkSheetWorkSheetWorkSheetsWorkSheetRangeWorkSheetquerySubObject()dynamicCall()

3. Basic usage

3.1. Include relevant documents

  To use it QAxObject, first .proadd its module name in the file axcontainer, so that the module will be loaded when the project file is compiled.

// project.pro
QT       += axcontainer

The following header files need to be included in the header file:

#include <QString>
#include <QFileDialog>
#include <QAxObject>
#include <QVariant>
#include <QVariantList>

3.2. Create Excel process and obtain Excel workbook set

Open the folder, select Excelthe file, and create Excelthe process:

// 打开文件夹
QString strFilePathName = QFileDialog::getOpenFileName(this, QStringLiteral("选择Excel文件"),"", tr("Exel file(*.xls *.xlsx)"));
if(strFilePathName.isNull()) {
    
    
	return ;
}
QAxObject *excel = new QAxObject(this)；

if (excel->setControl("Excel.Application")) {
    
    	// 加载 Microsoft Excel 控件
} else {
    
    
	excel->setControl("ket.Application");  // 加载 WPS Excel 控件
}

excel->setProperty("Visible", false);  // 不显示 Excel 窗体
QAxObject* workBooks = excel->querySubObject("WorkBooks");  //获取工作簿集合
workBooks->dynamicCall("Open(const QString&)", strFilePathName); //打开打开已存在的工作簿
QAxObject* workBook = excel->querySubObject("ActiveWorkBook"); //获取当前工作簿

3.3. Get spreadsheet set

Each Excelworkbook can contain several spreadsheets Sheet:

QAxObject* sheets = workBook->querySubObject("Sheets");  //获取工作表集合，Sheets也可换用WorkSheets

Get the worksheet that requires operation:

QAxObject* sheet = workBook->querySubObject("WorkSheets(int)", 1);//获取工作表集合的工作表1，即sheet1

3.4. Select the cell range to be operated on

Each page of the spreadsheet contains multiple cells. Before operating, you need to select the cell range to be operated:
select all used cells on the current page:

//获取该sheet的使用范围对象（一般读取 Excel 时会选取全部范围）
QAxObject* usedRange = sheet->querySubObject("UsedRange"); 

Select a specified range of cells:

//获取 sheet 的指定范围（一般写入数据时，会选取指定范围）
QAxObject* usedRange = sheet->querySubObject("Range(const QString)", "A1:C12");

Here A1:C12means to select the cell Ain the row Cof the column; if written as, it means to select the cell in the row of the column; of course, you can also write it to mean to select only this cell.1~12A1:A12A1~12A1:A1A1

Select specific cells:

//获取 sheet 的指定范围（一般修改数据时，会选取指定单元格）
QAxObject* usedRange = sheet->querySubObject("Range(QVariant,QVariant)", "A6");

Here A6, it means selecting A6this cell.

[注]：获取 UsedRange 操作将会得到一个动态创建 (new) 出来的对象。

3.5. Read the contents of the cell range

  After selecting each range of cells to be operated on, here is how to read the contents of all cells within the selected range:

QVariant var = usedRange->dynamicCall("Value");
delete usedRange;

  It should be noted that in the above code, except for the operation of getting the cell range ( ), the rest are referencesUsedRange to the object , which will not occupy memory space and do not need to be released. However, getting the applicable range of the cell ( ) will get a new creates a newly allocated object, so the object needs to be released manually after the read or write operation ends.UsedRange

  QVariantA class is a data union used to store read Exceldata. In fact, dynamicCall("Value")the data type read by calling is QList<QList<QVariant>>of type, so the read must be varconverted into data of this type.

QList<QList<QVariant>> xls_data;

QVariantList varRows = var.toList();
if (varRows.isEmpty()) {
    
    
    return;
}

const int rowCount = varRows.size();
this->excel.rowCount = rowCount;

QVariantList rowData;

for (int i = 0; i < rowCount; i++){
    
    
    rowData = varRows[i].toList();
    if (rowData.count() > this->excel.columnCount) {
    
    
    this->excel.columnCount = rowData.count();
    }
    this->xls_data.push_back(rowData);
}

3.6. Display the read data using QTableView

  Here TbleView_table1is the control Formsdirectly dragged in QTableView.

QStandardItemModel *tab_model;
for (int i = 0; i < xls_data.count(); i++) {
    
    
    for (int j = 0; j < xls_data.at(i).count(); j++) {
    
    
    QStandardItem *item = new QStandardItem(QString(xls_data.at(i).at(j).toByteArray()));
    tab_model->setItem(i, j, item);

    //delete item;
    }
}
this->ui->TbleView_table1->setModel(tab_model);

3.7. Write data to the selected cell range

  You must have noticed that in , Excelthe horizontal axis coordinates are A~Zexpressed in letters to distinguish them from the vertical axis. However, we often use numbers in operation, or use numbers in the setting loop to change. For convenience, we need to implement a Excelfunction to convert numbers to abscissas, as follows.

QString ExcelProcess::to26AlphabetString(int data)
{
    
    
    QChar ch = (QChar)(data + 0x40);//A对应0x41
    return QString(ch);
}


void ExcelProcess::convertToColName(int data, QString &res)
{
    
    
    Q_ASSERT(data > 0 && data < 65535);
    int tempData = data / 26;
    if (tempData > 0) {
    
    
        int mode = data % 26;
        convertToColName(mode, res);
        convertToColName(tempData, res);
    } else {
    
    
        res=(to26AlphabetString(data) + res);
    }
}

Add the data to be written row by row according to the specified rows and columns.

QList<QList<QVariant>> data_total;

int row = 50 - 30, col = 100 - 10;	// 表示：选取范围为，30~50 行，10~100 列

for (int i = 0; i < row; i++) {
    
    
	QList<QVariant> data_row;
	for (int j = 0; j < col; j++) {
    
    
		data_row.append("ImagineMiracle");
	}
	data_total.append(QVariant(data_row));
}
QString row_s, row_e, col_s, col_e, targetRange;
convertToColName(30, row_s);
convertToColName(50, row_e);
convertToColName(10, col_s);
convertToColName(100, col_e);
targetRange= col_s + row_s + ":" + col_e + row_e ;

QAxObject* sheet = workBook->querySubObject("WorkSheets(int)", 1);//获取工作表集合的工作表1，即sheet1

QAxObject* usedRange = sheet->querySubObject("Range(const QString)", target);
usedRange->setProperty("NumberFormat", "@");    //  设置所有单元格为文本属性
usedRange->dynamicCall("SetValue(const QVariant&", QVariant(data_total));
workBook->dynamicCall("Save()");	// 保存文件
delete usedRange;

3.8. Exit operation

  After all operations have been performed, you need to close and exit Excel. The code is as follows:

workBook->dynamicCall("Close()"); //关闭工作簿 
excel->dynamicCall("Quit()"); //退出进程

delete excel;

4. Sample Demonstration

  The following is a simple Exceltable operation code written by the author. Its functions include
1. Open and read Exceltable contents;
2. Calculate the amount of data in the range based on the range of data in the specified table and write it to the table;
3. Calculate based on the amount of data. The range of the data.

Complete project download link: ExcelProcess.zip

The file list is as follows:

Run the effect demonstration.

5. Attachment

The code for all source files is posted here:

5.1. ExcelPrecess.pro

QT       += core gui axcontainer

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17
RC_ICONS += pic/ExcelTool.ico

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    excelprocess.cpp

HEADERS += \
    excelprocess.h

FORMS += \
    excelprocess.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${
    
    TARGET}/bin
else: unix:!android: target.path = /opt/$${
    
    TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
    pic.qrc

5.2. excelprocess.h

#ifndef EXCELPROCESS_H
#define EXCELPROCESS_H

#include "ui_excelprocess.h"
#include <QMainWindow>
#include <QLineEdit>
#include <QPushButton>
#include <QString>
#include <QLabel>
#include <QFileDialog>
#include <QStandardPaths>
#include <QDebug>
#include <QDragEnterEvent>
#include <QDropEvent>
#include <QMimeData>
#include <QMovie>
#include <QScopedPointer>
#include <QList>
#include <QAxObject>
#include <QVariant>
#include <QVariantList>
#include <QStandardItemModel>
#include <QThread>
#include <QIcon>

QT_BEGIN_NAMESPACE
namespace Ui {
    
     class ExcelProcess; }
QT_END_NAMESPACE

#define APPNAME ("ExcelTool v1.3.0 build 20230828")

typedef struct {
    
    
    QAxObject *excel;
    QAxObject *workBooks;
    QAxObject *current_workBook;
    QAxObject *workSheets;
    QAxObject *current_workSheet;

    QAxObject *usedRange;
    QAxObject *rows;
    QAxObject *columns;

    int sheetCount, rowCount, columnCount;


}ExcelFile;

#define MODECOUNT (3)
static QString excel_mode[MODECOUNT] = {
    
    "Null", "Calc", "Range"};

typedef struct {
    
    
    int sheet;
    int col_src;
    //int col;
    int col_dest;
} CalcMode;

class ExcelProcess : public QMainWindow
{
    
    
    Q_OBJECT

private slots:
    void showFiles(void);

    void on_PBtn_View_clicked();

    void on_ComBox_Mode_currentIndexChanged(int index);

    void on_Btn_CalcRun_clicked();

    void on_LEdit_FilePath_textChanged(const QString &arg1);

    void on_Btn_RangeRun_clicked();

protected:
    void dragEnterEvent(QDragEnterEvent *event);    // 拖动进入事件

    void dropEvent(QDropEvent *event);      // 放下事件

public:
    ExcelProcess(QWidget *parent = nullptr);
    ~ExcelProcess();

    void openExcelFile();

    void closeExcelFile();

    void readExcel_OneSheet(int sheet_num);

    void showOneSheet(int sheet_num);

    void excelModeDisplay_00(void);

    void excelModeDisplay_01(void);

    void excelModeDisplay_02(void);

    void convertToColName(int data, QString &res);

    QString to26AlphabetString(int data);

    void castListListVariant2Variant(const QList<QList<QVariant> > &cells, QVariant &res);

private:
    Ui::ExcelProcess *ui;

    QString *fileName;

    QMovie *movie_01;

    ExcelFile excel;


    QList<QList<QVariant>> xls_data;    // excel 表数据

    CalcMode calcMode;

    QStandardItemModel *tab_model;

    void initUi(void);

    void initExcel(void);

};
#endif // EXCELPROCESS_H

5.3. excelprocess.cpp

#include "excelprocess.h"
#include "ui_excelprocess.h"

void ExcelProcess::showFiles()
{
    
    
    QString str = QFileDialog::getOpenFileName(this, "File Explorer", QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation),"Excel 文件(*.xls *.xlsx);;All file(*.*)");
    this->ui->LEdit_FilePath->setText(str.toUtf8());
    *this->fileName = this->ui->LEdit_FilePath->text();

    qDebug() << *this->fileName << "\n";

    return ;
}

void ExcelProcess::dragEnterEvent(QDragEnterEvent *event)
{
    
    
    if ((!event->mimeData()->urls()[0].fileName().right(3).compare("xls")) || (!event->mimeData()->urls()[0].fileName().right(4).compare("xlsx"))) {
    
    
        event->acceptProposedAction();
    } else {
    
    
        event->ignore();
    }

    return ;
}

void ExcelProcess::dropEvent(QDropEvent *event)
{
    
    
    const QMimeData *qm = event->mimeData();
    *this->fileName = qm->urls()[0].toLocalFile();  // 获取拖入的文件名
    this->ui->LEdit_FilePath->clear();
    this->ui->LEdit_FilePath->setText(*this->fileName);

    return ;
}

ExcelProcess::ExcelProcess(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::ExcelProcess)
{
    
    
    ui->setupUi(this);
    this->fileName = new QString;
    this->tab_model = new QStandardItemModel();
    this->setAcceptDrops(true);     // 设置主界面接收拖动进来的文件
    this->initUi();

    this->initExcel();


    return ;
}

ExcelProcess::~ExcelProcess()
{
    
    
    delete ui;
    delete fileName;

    this->tab_model->clear();
    delete this->tab_model;

    if (this->excel.current_workBook != nullptr) {
    
    
        this->excel.current_workBook->dynamicCall("Save()");
        this->excel.current_workBook->dynamicCall("Close()"); //关闭文件
    }

    if (this->excel.workBooks != nullptr) {
    
    
        this->excel.workBooks->dynamicCall("Close()"); //关闭文件
    }


    this->excel.excel->dynamicCall("Quit(void)");   // 退出


    delete this->excel.workBooks;
    delete this->excel.excel;

    return ;
}

void ExcelProcess::openExcelFile()
{
    
    

    //this->initExcel();
    if (this->excel.excel == nullptr) {
    
    
        return ;
    }

    this->excel.workBooks->dynamicCall("Open (const QString&)", *this->fileName);
    this->excel.current_workBook = this->excel.excel->querySubObject("ActiveWorkBook");
    this->excel.workSheets = this->excel.current_workBook->querySubObject("Sheets");

    this->excel.rowCount = 0;
    this->excel.columnCount = 0;

    this->excel.sheetCount = this->excel.workSheets->property("Count").toInt();

    qDebug() << "Sheet num: " << this->excel.sheetCount << "\n";

}

void ExcelProcess::closeExcelFile()
{
    
    
    if (this->excel.current_workBook != nullptr) {
    
    
        this->excel.current_workBook->dynamicCall("Save()");
        this->excel.current_workBook->dynamicCall("Close()"); //关闭文件
    }

    if (this->excel.workBooks != nullptr) {
    
    
        this->excel.workBooks->dynamicCall("Close()"); //关闭文件
    }


    this->excel.excel->dynamicCall("Quit(void)");   // 退出


    delete this->excel.workBooks;
    delete this->excel.excel;
    this->initExcel();


    return ;
}

void ExcelProcess::readExcel_OneSheet(int sheet_num)
{
    
    
    if (sheet_num > this->excel.sheetCount) {
    
    
        return;
    }


    // 读取一个 sheet
    this->excel.current_workSheet = this->excel.current_workBook->querySubObject("Sheets(int)", sheet_num);
    this->excel.usedRange = this->excel.current_workSheet->querySubObject("UsedRange");

    if (nullptr == this->excel.usedRange || this->excel.usedRange->isNull()) {
    
    
        return;
    }


    QVariant var = this->excel.usedRange->dynamicCall("Value");
    delete this->excel.usedRange;
    this->excel.usedRange = nullptr;


    // 读取一个 sheet 结束
    for (int i = 0; i < this->xls_data.count(); i++) {
    
    
        this->xls_data.value(i).clear();
    }

    this->xls_data.clear();

    QVariantList varRows = var.toList();
    if (varRows.isEmpty()) {
    
    
        return;
    }

    const int rowCount = varRows.size();
    this->excel.rowCount = rowCount;


    QVariantList rowData;

    for (int i = 0; i < rowCount; i++){
    
    
        rowData = varRows[i].toList();
        if (rowData.count() > this->excel.columnCount) {
    
    
            this->excel.columnCount = rowData.count();
        }
        this->xls_data.push_back(rowData);
    }

    //this->excel.current_workBook->dynamicCall("Close()");
    qDebug() << "Sheet:: row:" << this->excel.rowCount << "colum:" << this->excel.columnCount << "\n";

    this->ui->ComBox_Sheet->clear();
    for (int i = 1; i <= this->excel.sheetCount; i++) {
    
    
        this->ui->ComBox_Sheet->addItem(QString::number(i));
    }

    this->ui->ComBox_Row->clear();
    for (int i = 1; i <= this->excel.rowCount; i++) {
    
    
        this->ui->ComBox_Row->addItem(QString::number(i));
    }

    this->ui->ComBox_Column->clear();
    for (int i = 1; i <= this->excel.columnCount; i++) {
    
    
        this->ui->ComBox_Column->addItem(QString::number(i));
    }

}

void ExcelProcess::showOneSheet(int sheet_num)
{
    
    
    this->readExcel_OneSheet(sheet_num);



    this->tab_model->clear();
    for (int i = 0; i < this->xls_data.count(); i++) {
    
    
        for (int j = 0; j < this->xls_data.at(i).count(); j++) {
    
    
            QStandardItem *item = new QStandardItem(QString(this->xls_data.at(i).at(j).toByteArray()));
            this->tab_model->setItem(i, j, item);

            //delete item;
        }
    }

    this->ui->TbleView_table1->setModel(this->tab_model);
    //this->ui->TbleView_table1->setSectionResizeMode(QHeaderView::Stretch);
    //delete model;
}

void ExcelProcess::excelModeDisplay_00()
{
    
    
    this->ui->Lab_Row->setText("Row:");
    this->ui->Lab_Column->setText("Row:");

    this->ui->ComBox_Column->clear();

    for (int i = 1; i <= this->excel.columnCount; i++) {
    
    
        this->ui->ComBox_Column->addItem(QString::number(i));
    }

    this->ui->TbleView_table1->show();
    this->ui->Lab_Sheet->hide();
    this->ui->Lab_Row->hide();
    this->ui->Lab_Column->hide();
    this->ui->ComBox_Sheet->hide();
    this->ui->ComBox_Row->hide();
    this->ui->ComBox_Column->hide();
    this->ui->Btn_CalcRun->hide();
    this->ui->Btn_RangeRun->hide();

    this->ui->ComBox_Mode->setCurrentIndex(0);
}

void ExcelProcess::excelModeDisplay_01()
{
    
    

    this->ui->Lab_Row->setText("Col_s:");
    this->ui->Lab_Column->setText("Col_d:");
    this->ui->ComBox_Mode->setCurrentIndex(1);

    this->ui->ComBox_Row->clear();
    this->ui->ComBox_Column->clear();

    for (int i = 1; i <= this->excel.columnCount; i++) {
    
    
        this->ui->ComBox_Row->addItem(QString::number(i));
    }

    for (int i = 1; i <= this->excel.columnCount + 1; i++) {
    
    
        this->ui->ComBox_Column->addItem(QString::number(i));
    }

    this->ui->ComBox_Column->setCurrentIndex(this->ui->ComBox_Column->count() - 1);

    this->ui->Lab_Sheet->show();
    this->ui->Lab_Row->show();
    this->ui->Lab_Column->show();
    this->ui->TbleView_table1->show();
    this->ui->ComBox_Sheet->show();
    this->ui->ComBox_Row->show();
    this->ui->ComBox_Column->show();
    this->ui->Btn_CalcRun->show();
    this->ui->Btn_RangeRun->hide();
}

void ExcelProcess::excelModeDisplay_02()
{
    
    
    this->ui->Lab_Row->setText("Col_s:");
    this->ui->Lab_Column->setText("Col_d:");
    this->ui->ComBox_Mode->setCurrentIndex(2);

    this->ui->ComBox_Row->clear();
    this->ui->ComBox_Column->clear();

    for (int i = 1; i <= this->excel.columnCount; i++) {
    
    
        this->ui->ComBox_Row->addItem(QString::number(i));
    }

    for (int i = 1; i <= this->excel.columnCount + 1; i++) {
    
    
        this->ui->ComBox_Column->addItem(QString::number(i));
    }

    this->ui->ComBox_Column->setCurrentIndex(this->ui->ComBox_Column->count() - 1);

    this->ui->Lab_Sheet->show();
    this->ui->Lab_Row->show();
    this->ui->Lab_Column->show();
    this->ui->TbleView_table1->show();
    this->ui->ComBox_Sheet->show();
    this->ui->ComBox_Row->show();
    this->ui->ComBox_Column->show();
    this->ui->Btn_CalcRun->hide();
    this->ui->Btn_RangeRun->show();
}

void ExcelProcess::convertToColName(int data, QString &res)
{
    
    
    Q_ASSERT(data>0 && data<65535);
    int tempData = data / 26;
    if(tempData > 0) {
    
    
        int mode = data % 26;
        convertToColName(mode,res);
        convertToColName(tempData,res);
    } else {
    
    
        res=(to26AlphabetString(data)+res);
    }
}

QString ExcelProcess::to26AlphabetString(int data)
{
    
    
    QChar ch = (QChar)(data + 0x40);//A对应0x41
    return QString(ch);
}

void ExcelProcess::castListListVariant2Variant(const QList<QList<QVariant> > &cells, QVariant &res)
{
    
    
    QVariantList vars;
    const int rows = cells.size();      //获取行数
    for(int i = 0; i < rows; ++i)
    {
    
    
        vars.append(QVariant(cells[i]));    //将list(i)添加到QVariantList中 QVariant(cells[i])强制转换
    }
    res = QVariant(vars);   //强制转换
}

void ExcelProcess::initUi()
{
    
    
    this->setWindowTitle(APPNAME);
    this->setWindowIcon(QIcon(":/bk/pic/ExcelTool.ico"));
    this->ui->Lab_FilePath->setText("File Path:");
    this->ui->PBtn_View->setText("Open File");
    //this->ui->Lab_BottomBar->setText("");

    this->ui->Lab_Background->setText("");

    movie_01 = new QMovie(":/bk/pic/bk_01.gif");
    this->ui->Lab_Background->setGeometry(0, 0, 700, 500);
    this->ui->Lab_Background->setMovie(movie_01);
    movie_01->setScaledSize(this->ui->Lab_Background->size());
    movie_01->start();

    this->ui->Lab_Sheet->hide();
    this->ui->Lab_Row->hide();
    this->ui->Lab_Column->hide();
    this->ui->ComBox_Sheet->hide();
    this->ui->ComBox_Row->hide();
    this->ui->ComBox_Column->hide();
    this->ui->Lab_Mode->hide();
    this->ui->ComBox_Mode->hide();
    this->ui->Btn_CalcRun->hide();
    this->ui->Btn_RangeRun->hide();


    for (int i = 0; i < MODECOUNT; i++) {
    
    
        this->ui->ComBox_Mode->addItem(excel_mode[i]);
    }
    this->ui->ComBox_Mode->setCurrentIndex(0);
    this->ui->TbleView_table1->hide();



    return ;

}

void ExcelProcess::initExcel()
{
    
    
    this->excel.excel = new QAxObject("Excel.Application");   // 加载 excel 驱动
    this->excel.excel->setProperty("Visible", false);//不显示Excel界面，如果为true会看到启动的Excel界面
    //this->excel.excel->setProperty("Visible", true);
    this->excel.workBooks = this->excel.excel->querySubObject("WorkBooks");
}



void ExcelProcess::on_PBtn_View_clicked()
{
    
    
    *this->fileName = this->ui->LEdit_FilePath->text();
    if ((0 == this->fileName->right(3).compare("xls")) || (0 == this->fileName->right(4).compare("xlsx")) || this->fileName->isEmpty()) {
    
    
        ;
    } else {
    
    
        this->movie_01->stop();
        this->movie_01->setFileName(":/bk/pic/bk_04.gif");
        this->ui->Lab_Background->setMovie(movie_01);
        movie_01->setScaledSize(this->ui->Lab_Background->size());
        movie_01->start();

        return ;
    }

    if ("Done" == this->ui->PBtn_View->text()) {
    
    
        //QThread::usleep(5);
        this->ui->LEdit_FilePath->setEnabled(true);
        this->ui->PBtn_View->setText("Open File");
        this->tab_model->clear();


        this->ui->Lab_Sheet->hide();
        this->ui->Lab_Row->hide();
        this->ui->Lab_Column->hide();
        this->ui->ComBox_Sheet->hide();
        this->ui->ComBox_Row->hide();
        this->ui->ComBox_Column->hide();
        this->ui->Lab_Mode->hide();
        this->ui->ComBox_Mode->hide();
        this->ui->Btn_CalcRun->hide();
        this->ui->Btn_RangeRun->hide();
        this->ui->TbleView_table1->hide();
        this->movie_01->stop();
        this->movie_01->setFileName(":/bk/pic/bk_01.gif");
        this->ui->Lab_Background->setMovie(movie_01);
        movie_01->setScaledSize(this->ui->Lab_Background->size());
        movie_01->start();
        this->closeExcelFile();


    } else {
    
    
        if (this->ui->LEdit_FilePath->text().isEmpty()) {
    
    
            this->showFiles();
        } else {
    
    
            //QThread::usleep(5);
            this->excelModeDisplay_00();
            this->ui->LEdit_FilePath->setEnabled(false);
            this->ui->PBtn_View->setText("Done");
            this->movie_01->stop();
            this->movie_01->setFileName(":/bk/pic/bk_02.gif");
            this->ui->Lab_Background->setMovie(movie_01);
            movie_01->setScaledSize(this->ui->Lab_Background->size());
            movie_01->start();

            this->openExcelFile();
            this->showOneSheet(1);
            this->ui->TbleView_table1->setStyleSheet("background-color:transparent");
            this->ui->TbleView_table1->horizontalHeader()->setStyleSheet("QHeaderView::section{background:transparent},QHeaderView::Stretch");
            this->ui->TbleView_table1->verticalHeader()->setStyleSheet("QHeaderView::section{background:transparent}");

            this->ui->TbleView_table1->setCornerButtonEnabled(false);

            this->ui->Lab_Mode->show();
            this->ui->ComBox_Mode->show();
            this->ui->TbleView_table1->show();
        }

    }

}


void ExcelProcess::on_ComBox_Mode_currentIndexChanged(int index)
{
    
    
    switch(index) {
    
    
    case 0: {
    
    
        this->excelModeDisplay_00();
        break;
    }
    case 1: {
    
    
        this->excelModeDisplay_01();
        break;
    }
    case 2: {
    
    
        this->excelModeDisplay_02();
        break;
    }
    default: {
    
    
        break;
    }
    }

    return ;
}


void ExcelProcess::on_Btn_CalcRun_clicked()
{
    
    
    this->calcMode.sheet = this->ui->ComBox_Sheet->currentText().toInt();
    this->calcMode.col_src = this->ui->ComBox_Row->currentText().toInt();
    this->calcMode.col_dest = this->ui->ComBox_Column->currentText().toInt();

    QString data, num1, num2, result;

    qDebug() << "Sheet::" << this->calcMode.sheet;


    this->showOneSheet(this->calcMode.sheet);

    QList<QVariant> data_total;

    for (int i = 0; i < this->excel.rowCount; i++) {
    
    
        data = this->xls_data.at(i).at(this->calcMode.col_src - 1).toByteArray();
        bool flag = true;
        num1.clear();
        num2.clear();
        for (int i_d = 0; i_d < data.length(); i_d++) {
    
    
            if ('-' == data.at(i_d)) {
    
    
                flag = false;
                continue;
            }
            if (flag) {
    
    
                num1 += data.at(i_d);
            } else {
    
    
                num2 += data.at(i_d);
            }
        }

        QList<QVariant> data_row;

        result = QString::number(num2.toInt() - num1.toInt());

        qDebug() << "num1:" << num1 << "num2:" << num2 << "res:" << result << "\n";

        data_row.append(QString::number(num2.toInt() - num1.toInt() + 1));
        data_total.append(QVariant(data_row));


    }

    QString col_num, target;
    this->convertToColName(this->calcMode.col_dest, col_num);
    qDebug() << "Col:" << col_num << "\n";

    target = col_num + "1:" + col_num + QString::number(this->excel.rowCount);
    qDebug() << target ;
    this->excel.current_workSheet = this->excel.current_workBook->querySubObject("Sheets(int)", this->calcMode.sheet);
    this->excel.usedRange = this->excel.current_workSheet->querySubObject("Range(const QString)", target);
    this->excel.usedRange->setProperty("NumberFormat", "@");    //  设置所有单元格为文本属性
    this->excel.usedRange->dynamicCall("SetValue(const QVariant&", QVariant(data_total));
    this->excel.current_workBook->dynamicCall("Save()");
    //this->excel.current_workBook->dynamicCall("Close()");
    this->showOneSheet(this->calcMode.sheet);
    delete this->excel.usedRange;


}


void ExcelProcess::on_LEdit_FilePath_textChanged(const QString &arg1)
{
    
    
    if (arg1.isEmpty()) {
    
    
        this->movie_01->stop();
        this->movie_01->setFileName(":/bk/pic/bk_01.gif");
        this->ui->Lab_Background->setMovie(movie_01);
        movie_01->setScaledSize(this->ui->Lab_Background->size());
        movie_01->start();

        *this->fileName = "";
    } else if ((0 == arg1.right(3).compare("xls")) || (0 == arg1.right(4).compare("xlsx"))) {
    
    
        this->movie_01->stop();
        this->movie_01->setFileName(":/bk/pic/bk_03.gif");
        this->ui->Lab_Background->setMovie(movie_01);
        movie_01->setScaledSize(this->ui->Lab_Background->size());
        movie_01->start();

        *this->fileName = this->ui->LEdit_FilePath->text();
    } else {
    
    
        this->movie_01->stop();
        this->movie_01->setFileName(":/bk/pic/bk_04.gif");
        this->ui->Lab_Background->setMovie(movie_01);
        movie_01->setScaledSize(this->ui->Lab_Background->size());
        movie_01->start();
    }

    return ;
}


void ExcelProcess::on_Btn_RangeRun_clicked()
{
    
    
    this->calcMode.sheet = this->ui->ComBox_Sheet->currentText().toInt();
    this->calcMode.col_src = this->ui->ComBox_Row->currentText().toInt();
    this->calcMode.col_dest = this->ui->ComBox_Column->currentText().toInt();

    QString data;
    int num_src = 0, num1 = 0, num2 = 0;

    qDebug() << "Sheet::" << this->calcMode.sheet;


    this->showOneSheet(this->calcMode.sheet);

    QList<QVariant> data_total;

    for (int i = 0; i < this->excel.rowCount; i++) {
    
    
        data = this->xls_data.at(i).at(this->calcMode.col_src - 1).toByteArray();

        num_src = data.toInt();
        num1 = num2 + 1;
        num2 = num_src + num1 - 1;

        QList<QVariant> data_row;


        qDebug() << "src:" << num_src << "num1:" << num1 << "num2:" << num2 << "\n";
        qDebug() << "range:" << (QString::number(num1) + "-" + QString::number(num2)) << "\n";

        data_row.append(QString::number(num1) + "-" + QString::number(num2));
        data_total.append(QVariant(data_row));


    }

    QString col_num, target;
    this->convertToColName(this->calcMode.col_dest, col_num);
    qDebug() << "Col:" << col_num << "\n";

    target = col_num + "1:" + col_num + QString::number(this->excel.rowCount);
    qDebug() << target ;
    this->excel.current_workSheet = this->excel.current_workBook->querySubObject("Sheets(int)", this->calcMode.sheet);
    this->excel.usedRange = this->excel.current_workSheet->querySubObject("Range(const QString)", target);
    this->excel.usedRange->setProperty("NumberFormat", "@");    //  设置所有单元格为文本属性
    this->excel.usedRange->dynamicCall("SetValue(const QVariant&", QVariant(data_total));
    this->excel.current_workBook->dynamicCall("Save()");
    //this->excel.current_workBook->dynamicCall("Close()");
    this->showOneSheet(this->calcMode.sheet);
    delete this->excel.usedRange;

}

5.4. main.cpp

#include "excelprocess.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    
    
    QApplication a(argc, argv);
    ExcelProcess w;
    w.show();
    return a.exec();
}

5.5. excelprocess.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>ExcelProcess</class>
 <widget class="QMainWindow" name="ExcelProcess">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>700</width>
    <height>500</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>ExcelProcess</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QLineEdit" name="LEdit_FilePath">
    <property name="geometry">
     <rect>
      <x>80</x>
      <y>420</y>
      <width>490</width>
      <height>24</height>
     </rect>
    </property>
   </widget>
   <widget class="QPushButton" name="PBtn_View">
    <property name="geometry">
     <rect>
      <x>590</x>
      <y>417</y>
      <width>80</width>
      <height>30</height>
     </rect>
    </property>
    <property name="text">
     <string>Open File</string>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_FilePath">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>420</y>
      <width>60</width>
      <height>24</height>
     </rect>
    </property>
    <property name="text">
     <string>File Path:</string>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_Background">
    <property name="geometry">
     <rect>
      <x>700</x>
      <y>500</y>
      <width>53</width>
      <height>16</height>
     </rect>
    </property>
    <property name="text">
     <string>TextLabel</string>
    </property>
   </widget>
   <widget class="QTableView" name="TbleView_table1">
    <property name="geometry">
     <rect>
      <x>19</x>
      <y>280</y>
      <width>531</width>
      <height>100</height>
     </rect>
    </property>
   </widget>
   <widget class="QComboBox" name="ComBox_Sheet">
    <property name="geometry">
     <rect>
      <x>80</x>
      <y>390</y>
      <width>60</width>
      <height>24</height>
     </rect>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_Sheet">
    <property name="geometry">
     <rect>
      <x>30</x>
      <y>390</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
    <property name="text">
     <string>Sheet:</string>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_Row">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>390</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
    <property name="text">
     <string>Row_s:</string>
    </property>
   </widget>
   <widget class="QComboBox" name="ComBox_Row">
    <property name="geometry">
     <rect>
      <x>220</x>
      <y>390</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_Column">
    <property name="geometry">
     <rect>
      <x>280</x>
      <y>390</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
    <property name="text">
     <string>Col_d:</string>
    </property>
   </widget>
   <widget class="QComboBox" name="ComBox_Column">
    <property name="geometry">
     <rect>
      <x>330</x>
      <y>390</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
   </widget>
   <widget class="QComboBox" name="ComBox_Mode">
    <property name="geometry">
     <rect>
      <x>620</x>
      <y>280</y>
      <width>70</width>
      <height>24</height>
     </rect>
    </property>
   </widget>
   <widget class="QLabel" name="Lab_Mode">
    <property name="geometry">
     <rect>
      <x>565</x>
      <y>280</y>
      <width>50</width>
      <height>24</height>
     </rect>
    </property>
    <property name="text">
     <string>Mode:</string>
    </property>
   </widget>
   <widget class="QPushButton" name="Btn_CalcRun">
    <property name="geometry">
     <rect>
      <x>620</x>
      <y>350</y>
      <width>70</width>
      <height>30</height>
     </rect>
    </property>
    <property name="text">
     <string>Run</string>
    </property>
   </widget>
   <widget class="QPushButton" name="Btn_RangeRun">
    <property name="geometry">
     <rect>
      <x>620</x>
      <y>350</y>
      <width>70</width>
      <height>30</height>
     </rect>
    </property>
    <property name="text">
     <string>Run</string>
    </property>
   </widget>
   <zorder>Lab_Background</zorder>
   <zorder>Lab_FilePath</zorder>
   <zorder>PBtn_View</zorder>
   <zorder>LEdit_FilePath</zorder>
   <zorder>TbleView_table1</zorder>
   <zorder>ComBox_Sheet</zorder>
   <zorder>Lab_Sheet</zorder>
   <zorder>Lab_Row</zorder>
   <zorder>ComBox_Row</zorder>
   <zorder>Lab_Column</zorder>
   <zorder>ComBox_Column</zorder>
   <zorder>ComBox_Mode</zorder>
   <zorder>Lab_Mode</zorder>
   <zorder>Btn_CalcRun</zorder>
   <zorder>Btn_RangeRun</zorder>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>700</width>
     <height>26</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

#over