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.
/* ----------------------------------------------------------
* Tutorial 24
*
* This tutorial shows how to create an Excel file in C++ and
* to create a chart in a worksheet.
* ---------------------------------------------------------- */#include"EasyXLS.h"#include<conio.h>int main()
{
printf("Tutorial 24\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 a worksheet
workbook->easy_addWorksheet_2("SourceData");
// Get the table of data for the worksheet
EasyXLS::IExcelWorksheetPtr xlsFirstTab =
(EasyXLS::IExcelWorksheetPtr)workbook->easy_getSheet("SourceData");
EasyXLS::IExcelTablePtr xlsTable1 = xlsFirstTab->easy_getExcelTable();
// Add data in cells for report header
xlsTable1->easy_getCell(0, 0)->setValue("Show Date");
xlsTable1->easy_getCell(0, 1)->setValue("Available Places");
xlsTable1->easy_getCell(0, 2)->setValue("Available Tickets");
xlsTable1->easy_getCell(0, 3)->setValue("Sold Tickets");
// Add data in cells for chart report values
xlsTable1->easy_getCell(1, 0)->setValue("03/13/2005 00:00:00");
xlsTable1->easy_getCell(1, 0)->setFormat(FORMAT_FORMAT_DATE);
xlsTable1->easy_getCell(2, 0)->setValue("03/14/2005 00:00:00");
xlsTable1->easy_getCell(2, 0)->setFormat(FORMAT_FORMAT_DATE);
xlsTable1->easy_getCell(3, 0)->setValue("03/15/2005 00:00:00");
xlsTable1->easy_getCell(3, 0)->setFormat(FORMAT_FORMAT_DATE);
xlsTable1->easy_getCell(4, 0)->setValue("03/16/2005 00:00:00");
xlsTable1->easy_getCell(4, 0)->setFormat(FORMAT_FORMAT_DATE);
xlsTable1->easy_getCell(1, 1)->setValue("10000");
xlsTable1->easy_getCell(2, 1)->setValue("5000");
xlsTable1->easy_getCell(3, 1)->setValue("8500");
xlsTable1->easy_getCell(4, 1)->setValue("1000");
xlsTable1->easy_getCell(1, 2)->setValue("8000");
xlsTable1->easy_getCell(2, 2)->setValue("4000");
xlsTable1->easy_getCell(3, 2)->setValue("6000");
xlsTable1->easy_getCell(4, 2)->setValue("1000");
xlsTable1->easy_getCell(1, 3)->setValue("920");
xlsTable1->easy_getCell(2, 3)->setValue("1005");
xlsTable1->easy_getCell(3, 3)->setValue("342");
xlsTable1->easy_getCell(4, 3)->setValue("967");
// Set column widths
xlsTable1->easy_getColumnAt(0)->setWidth(100);
xlsTable1->easy_getColumnAt(1)->setWidth(100);
xlsTable1->easy_getColumnAt(2)->setWidth(100);
xlsTable1->easy_getColumnAt(3)->setWidth(100);
// Create a chart
EasyXLS::IExcelChartPtr xlsChart;
CoCreateInstance(__uuidof(EasyXLS::ExcelChart), NULL, CLSCTX_ALL,
__uuidof(EasyXLS::IExcelChart), (void**) &xlsChart);
xlsChart->setLeftUpperCorner_2("A10");
xlsChart->setSize(600, 300);
xlsChart->easy_addSeries_2("=SourceData!$B$1", "=SourceData!$B$2:$B$5");
xlsChart->easy_addSeries_2("=SourceData!$C$1", "=SourceData!$C$2:$C$5");
xlsChart->easy_addSeries_2("=SourceData!$D$1", "=SourceData!$D$2:$D$5");
xlsChart->easy_setCategoryXAxisLabels("=SourceData!$A$2:$A$5");
// Add the chart to the first worksheet
EasyXLS::IExcelWorksheetPtr xlsWorksheet =
(EasyXLS::IExcelWorksheetPtr)workbook->easy_getSheet("SourceData");
xlsWorksheet->easy_addChart(xlsChart);
// Export Excel file
printf("Writing file C:\\Samples\\Tutorial24 - chart inside worksheet.xlsx.");
workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial24 - chart inside worksheet.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: 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 3: Run C++ code that creates a chart in a worksheet
Execute the following C++ code that exports a chart to Excel and the chart is placed inside a worksheet.
