EasyXLS

How to set chart type, chart area, plot area, X axis, Y axis, series and legend in C++

/* -------------------------------------------------------------
 * Tutorial 23
 *
 * This tutorial shows how to create an Excel file in C++ with a 
 * chart and how to set chart type and formatting properties for
 * chart area, plot area, axis, series and legend.
 * -------------------------------------------------------------- */

#include "stdafx.h"
#include "EasyXLS.h"
#include <conio.h>

int _tmain(int argc, _TCHAR* argv[])
{
    printf("Tutorial 23\n----------\n");

    HRESULT hr;

    // Initialize COM
    hr = CoInitialize(0);

    // Use the SUCCEEDED macro and get a pointer to the interface
    if (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 an 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);

            // Add a chart sheet
            workbook->easy_addChart_5("Chart", "=SourceData!$A$1:$D$5", CHART_SERIES_IN_COLUMNS);

            // Get the previously added chart
            EasyXLS::IExcelChartSheetPtr xlsChartSheet = 
                    (EasyXLS::IExcelChartSheetPtr)workbook->easy_getSheetAt(1);
            EasyXLS::IExcelChartPtr xlsChart = xlsChartSheet->easy_getExcelChart();

            // Set chart type
            xlsChart->easy_setChartType(CHART_CHART_TYPE_CYLINDER_COLUMN);

            // Format chart area
            EasyXLS::IExcelChartAreaPtr xlsChartArea = xlsChart->easy_getChartArea();
            xlsChartArea->getLineColorFormat()->setLineColor(COLOR_DARKGRAY);
            xlsChartArea->getLineStyleFormat()->setDashType(LINESTYLEFORMAT_DASH_TYPE_SOLID);
            xlsChartArea->getLineStyleFormat()->setWidth(0.25f);

            // Format chart plot area
            EasyXLS::IExcelPlotAreaPtr xlsPlotArea = xlsChart->easy_getPlotArea();
            xlsPlotArea->getLineColorFormat()->setLineColor(COLOR_DARKGRAY);
            xlsPlotArea->getLineStyleFormat()->setDashType(LINESTYLEFORMAT_DASH_TYPE_SOLID);
            xlsPlotArea->getLineStyleFormat()->setWidth(0.25f);

            // Format chart legend
            EasyXLS::IExcelChartLegendPtr xlsChartLegend = xlsChart->easy_getLegend();
            xlsChartLegend->getFillFormat()->setBackground(COLOR_LAVENDERBLUSH);
            xlsChartLegend->getFontFormat()->setForeground(COLOR_BLUE);
            xlsChartLegend->getFontFormat()->setItalic(true);
            xlsChartLegend->setKeysArrangementDirection(CHART_KEYS_ARRANGEMENT_DIRECTION_HORIZONTAL);
            xlsChartLegend->setPlacement(CHART_LEGEND_CORNER);
            xlsChartLegend->getShadowFormat()->setShadow(SHADOWFORMAT_OFFSET_DIAGONAL_BOTTOM_RIGHT);

            // Format chart X axis
            EasyXLS::IExcelAxisPtr xlsXAxis = xlsChart->easy_getCategoryXAxis();
            xlsXAxis->getLineColorFormat()->setLineColor(COLOR_STEELBLUE);
            xlsXAxis->getLineStyleFormat()->setDashType(LINESTYLEFORMAT_DASH_TYPE_DASH_DOT);
            xlsXAxis->getLineStyleFormat()->setWidth(0.25f);
            xlsXAxis->getFontFormat()->setForeground(COLOR_RED);

            // Format chart Y axis
            EasyXLS::IExcelAxisPtr xlsYAxis = xlsChart->easy_getValueYAxis();
            xlsYAxis->getLineColorFormat()->setLineColor(COLOR_STEELBLUE);
            xlsYAxis->getLineStyleFormat()->setDashType(LINESTYLEFORMAT_DASH_TYPE_LONG_DASH);
            xlsYAxis->getLineStyleFormat()->setWidth(0.25f);
            xlsYAxis->getFontFormat()->setForeground(COLOR_BLUE);

            // Fomat chart series
            xlsChart->easy_getSeriesAt(0)->getFillFormat()->setBackground(COLOR_ROYALBLUE);
            xlsChart->easy_getSeriesAt(1)->getFillFormat()->setBackground(COLOR_YELLOW);
            xlsChart->easy_getSeriesAt(2)->getFillFormat()->setBackground(COLOR_LIGHTGREEN);

            // Export Excel file
            printf("Writing file C:\\Samples\\Tutorial23 - various Excel chart settings.xlsx.");
            workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial23 - various Excel chart settings.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 Excel libraries:

.NET
Excel Library for C++
full COM+ version to import, export or convert Excel files
Excel Writer for C++
COM+ version to create and export Excel files
Download EasyXLS™ Excel Library for C++

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2010
MS Excel 2013
MS Excel 2016
MS Excel 2019
XLSXXLSMXLSBXLS
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