EasyXLS Excel library can be used to export Excel files in C++. The integration varies depending on the project technique, if .NET Framework can be used or not.
If you are using a trial, generate a trial license file from EasyXLS trials page. The trial license is valid for 30-days.
If you own a license key, you may login to the account that purchased the license and generate the license file from: https://www.easyxls.com/my-orders
Setup the license file into your project using these guidelines.
Step 4: Run C++ code that groups data in Excel sheet
Execute the following C++ code that groups data on the first sheet of an Excel file on two outline levels.
/* ---------------------------------------------------------------------------
* Tutorial 17
*
* This tutorial shows how to create an Excel file with groups on rows in C++.
* The Excel file has two worksheets. The first one is full with data and
* contains the data groups.
* --------------------------------------------------------------------------- */#include"EasyXLS.h"#include<conio.h>int main()
{
printf("Tutorial 17\n----------\n");
HRESULT hr;
// Initialize COM
hr = CoInitialize(0);
// Use the SUCCEEDED macro and get a pointer to the interfaceif (SUCCEEDED(hr))
{
// Create a pointer to the interface that exports Excel files
EasyXLS::IExcelDocumentPtr workbook;
hr = CoCreateInstance(__uuidof(EasyXLS::ExcelDocument),
NULL,
CLSCTX_ALL,
__uuidof(EasyXLS::IExcelDocument),
(void**) &workbook) ;
if (SUCCEEDED(hr)){
// Create two sheets
workbook->easy_addWorksheet_2("First tab");
workbook->easy_addWorksheet_2("Second tab");
// Get the table of data for the first worksheet
EasyXLS::IExcelWorksheetPtr xlsFirstTab= (EasyXLS::IExcelWorksheetPtr)workbook->easy_getSheetAt(0);
EasyXLS::IExcelTablePtr xlsFirstTable = xlsFirstTab->easy_getExcelTable();
// Add data in cells for report headerchar* cellValue = (char*)malloc(11*sizeof(char));
char* columnNumber = (char*)malloc(sizeof(char));
for (int column=0; column<5; column++)
{
strcpy_s(cellValue, 8, "Column ");
_itoa_s(column+ 1, columnNumber, 2, 10);
strcat_s(cellValue, 10, columnNumber);
xlsFirstTable->easy_getCell(0,column)->setValue(cellValue);
xlsFirstTable->easy_getCell(0,column)->setDataType(DATATYPE_STRING);
}
xlsFirstTable->easy_getRowAt(0)->setHeight(30);
// Add data in cells for report valueschar* rowNumber = (char*)malloc(sizeof(char));
for (int row=0; row<25; row++)
{
for (int column=0; column<5; column++)
{
strcpy_s(cellValue, 6, "Data ");
_itoa_s(column+ 1, columnNumber, 2, 10);
_itoa_s(row + 1, rowNumber, 4, 10);
strcat_s(cellValue, 10, rowNumber);
strcat_s(cellValue, 12, ", ");
strcat_s(cellValue, 13, columnNumber);
xlsFirstTable->easy_getCell(row+1,column)->setValue(cellValue);
xlsFirstTable->easy_getCell(row+1,column)->setDataType(DATATYPE_STRING);
}
}
// Set column widths
xlsFirstTable->setColumnWidth_2(0, 70);
xlsFirstTable->setColumnWidth_2(1, 100);
xlsFirstTable->setColumnWidth_2(2, 70);
xlsFirstTable->setColumnWidth_2(3, 100);
xlsFirstTable->setColumnWidth_2(4, 70);
// Group rows and format A1:E26 cell range
EasyXLS::IExcelDataGroupPtr xlsFirstDataGroup ;
CoCreateInstance(__uuidof(EasyXLS::ExcelDataGroup), NULL, CLSCTX_ALL,
__uuidof(EasyXLS::IExcelDataGroupPtr), (void**) &xlsFirstDataGroup);
xlsFirstDataGroup->setRange_2("A1:E26");
xlsFirstDataGroup->setGroupType(DATAGROUP_GROUP_BY_ROWS);
xlsFirstDataGroup->setCollapsed(false);
EasyXLS::IExcelAutoFormatPtr xlsAutoFormat;
CoCreateInstance(__uuidof(EasyXLS::ExcelAutoFormat), NULL, CLSCTX_ALL,
__uuidof(EasyXLS::IExcelAutoFormat), (void**) &xlsAutoFormat);
xlsAutoFormat->InitAs(AUTOFORMAT_EASYXLS1);
xlsFirstDataGroup->setAutoFormat(xlsAutoFormat);
xlsFirstTab->easy_addDataGroup(xlsFirstDataGroup);
// Group rows and format A2:E10 cell range, outline level two, inside previous group
EasyXLS::IExcelDataGroupPtr xlsSecondDataGroup;
CoCreateInstance(__uuidof(EasyXLS::ExcelDataGroup), NULL, CLSCTX_ALL,
__uuidof(EasyXLS::IExcelDataGroupPtr), (void**) &xlsSecondDataGroup);
xlsSecondDataGroup->setRange_2("A2:E10");
xlsSecondDataGroup->setGroupType(DATAGROUP_GROUP_BY_ROWS);
xlsSecondDataGroup->setCollapsed(false);
EasyXLS::IExcelAutoFormatPtr xlsAutoFormat2;
CoCreateInstance(__uuidof(EasyXLS::ExcelAutoFormat), NULL, CLSCTX_ALL,
__uuidof(EasyXLS::IExcelAutoFormat), (void**) &xlsAutoFormat2);
xlsAutoFormat2->InitAs(AUTOFORMAT_EASYXLS2);
xlsSecondDataGroup->setAutoFormat(xlsAutoFormat2);
xlsFirstTab->easy_addDataGroup(xlsSecondDataGroup);
// Export Excel file
printf("Writing file C:\\Samples\\Tutorial17 - group data in Excel.xlsx.");
workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial17 - group data in Excel.xlsx");
// Confirm export of Excel file
_bstr_t sError = workbook->easy_getError();
if (strcmp(sError, "") == 0){
printf("\nFile successfully created. Press Enter to Exit...");
}
else{
printf("\nError encountered: %s", (LPCSTR)sError);
}
// Dispose memory
workbook->Dispose();
}
else{
printf("Object is not available!");
}
}
else{
printf("COM can't be initialized!");
}
// Uninitialize COM
CoUninitialize();
_getch();
return 0;
}
C++ and .NET Framework This tutorial is valid for C++ applications that cannot use .NET Framework. It is recommended, for better performances, that if the C++ application already uses or can use .NET Framework to make use of this similar code sample.
Overloaded methods For methods with same name but different parameters, only the first method overload retains the original name. Subsequent overloads are uniquely renamed by appending to the method name '_2', '_3', etc (method, method_2, method_3), an integer that corresponds to the order of declaration that can be found in EasyXLS.h, a file that comes with EasyXLS installation.
EasyXLS in C++.NET projects using .NET Framework
If you opt for the .NET Framework version of EasyXLS, you need a C++.NET project and to include EasyXLS.dll into project.
To download the trial version of EasyXLS Excel Library, press the below button:
If you already own a license key, you may login and download EasyXLS from your account.
Install the downloaded EasyXLS installer for v8.6 or earlier.
Step 2: License file setup
Step required for EasyXLS v9.0 or later.
If you are using a trial, generate a trial license file from EasyXLS trials page. The trial license is valid for 30-days.
If you own a license key, you may login to the account that purchased the license and generate the license file from: https://www.easyxls.com/my-orders
Setup the license file into your project using these guidelines.
Step 3: Include EasyXLS library into project
EasyXLS.dll must be added to your project. EasyXLS.dll can be found: - Inside the downloaded archive at Step 1 for EasyXLS v9.0 or later - Under installation path for EasyXLS v8.6 or earlier, in "Dot NET version" folder.
Step 4: Run C++ code that groups data in Excel sheet
Execute the following C++ code that groups data on the first sheet of an Excel file on two outline levels.
/*--------------------------------------------------------------------------------
| Tutorial 17
|
| This tutorial shows how to create an Excel file with groups on rows in C++.NET.
| The Excel file has two worksheets. The first one is full with data and contains
| the data groups.
---------------------------------------------------------------------------------*/#include <conio.h>
#include <stdio.h>
using namespace System;
using namespace EasyXLS;
using namespace EasyXLS::Constants;
int main()
{
Console::WriteLine("Tutorial 17\n----------\n");
// Create an instance of the class that exports Excel files having two sheets
ExcelDocument ^workbook = gcnew ExcelDocument(2);
// Set the sheet names
workbook->easy_getSheetAt(0)->setSheetName("First tab");
workbook->easy_getSheetAt(1)->setSheetName("Second tab");
// Get the table of data for the first worksheet
ExcelWorksheet ^xlsFirstTab = safe_cast<ExcelWorksheet^>(workbook->easy_getSheetAt(0));
ExcelTable ^xlsFirstTable = xlsFirstTab->easy_getExcelTable();
// Add data in cells for report headerfor (int column=0; column<5; column++)
{
xlsFirstTable->easy_getCell(0,column)->setValue(String::Concat("Column ",(column + 1).ToString()));
xlsFirstTable->easy_getCell(0,column)->setDataType(DataType::STRING);
}
xlsFirstTable->easy_getRowAt(0)->setHeight(30);
// Add data in cells for report valuesfor (int row=0; row<25; row++)
{
for (int column=0; column<5; column++)
{
xlsFirstTable->easy_getCell(row+1,column)->setValue(
String::Concat("Data ", (row + 1).ToString(), ", ", (column + 1).ToString()));
xlsFirstTable->easy_getCell(row+1,column)->setDataType(DataType::STRING);
}
}
// Set column widths
xlsFirstTable->setColumnWidth(0, 70);
xlsFirstTable->setColumnWidth(1, 100);
xlsFirstTable->setColumnWidth(2, 70);
xlsFirstTable->setColumnWidth(3, 100);
xlsFirstTable->setColumnWidth(4, 70);
// Group rows and format A1:E26 cell range
ExcelDataGroup ^xlsFirstDataGroup = gcnew ExcelDataGroup("A1:E26", DataGroup::GROUP_BY_ROWS, false);
xlsFirstDataGroup->setAutoFormat(gcnew ExcelAutoFormat(Styles::AUTOFORMAT_EASYXLS1));
xlsFirstTab->easy_addDataGroup(xlsFirstDataGroup );
// Group rows and format A2:E10 cell range, outline level two, inside previous group
ExcelDataGroup ^xlsSecondDataGroup = gcnew ExcelDataGroup("A2:E10", DataGroup::GROUP_BY_ROWS, false);
xlsSecondDataGroup->setAutoFormat(gcnew ExcelAutoFormat(Styles::AUTOFORMAT_EASYXLS2));
xlsFirstTab->easy_addDataGroup(xlsSecondDataGroup);
// Export Excel file
Console::WriteLine("Writing file C:\\Samples\\Tutorial17 - group data in Excel.xlsx.");
workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial17 - group data in Excel.xlsx");
// Confirm export of Excel file
String ^sError = workbook->easy_getError();
if (sError->Equals(""))
Console::Write("\nFile successfully created. Press Enter to Exit...");
else
Console::Write(String::Concat("\nError encountered: ", sError, "\nPress Enter to Exit..."));
// Dispose memory
delete workbook;
Console::ReadLine();
return 0;
}
