Libreria C open source per fogli di calcolo Excel

Installa libxlsxwriter tramite CRAN

 cmake $SOURCE_DIR $FLAGS 

Clona il repository del codice sorgente di libxlsxwriter da GitHub. Si prega di utilizzare il codice seguente.

Installa libxlsxwriter tramite GitHub

it clone https://github.com/jmcnamara/libxlsxwriter.git
# Or use your preferred protocol instead of https 

Crea foglio elettronico Excel via C API

#include "xlsxwriter.h"
int main() {
    /* Create a new workbook and add a worksheet. */
    lxw_workbook  *workbook  = workbook_new("demo.xlsx");
    lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
    /* Add a format. */
    lxw_format *format = workbook_add_format(workbook);
    /* Set the bold property for the format */
    format_set_bold(format);
    /* Change the column width for clarity. */
    worksheet_set_column(worksheet, 0, 0, 20, NULL);
    /* Write some simple text. */
    worksheet_write_string(worksheet, 0, 0, "Hello", NULL);
    /* Text with formatting. */
    worksheet_write_string(worksheet, 1, 0, "World", format);
    /* Write some numbers. */
    worksheet_write_number(worksheet, 2, 0, 123,     NULL);
    worksheet_write_number(worksheet, 3, 0, 123.456, NULL);
    /* Insert an image. */
    worksheet_insert_image(worksheet, 1, 2, "logo.png");
    workbook_close(workbook);
    return 0;
}

Crea grafici in Excel Worksheet tramite Libxlsxwriter

#include "xlsxwriter.h"
int main() {
    lxw_workbook  *workbook  = new_workbook("chart.xlsx");
    lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
    // User function to add data to worksheet, not shown here.
    write_worksheet_data(worksheet);
    // Create a chart object.
    lxw_chart *chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
    // In the simplest case we just add some value data series.
    // The NULL categories will default to 1 to 5 like in Excel.
    chart_add_series(chart, NULL, "=Sheet1!$A$1:$A$5");
    chart_add_series(chart, NULL, "=Sheet1!$B$1:$B$5");
    chart_add_series(chart, NULL, "=Sheet1!$C$1:$C$5");
    // Insert the chart into the worksheet
    worksheet_insert_chart(worksheet, CELL("B7"), chart);
    return workbook_close(workbook);
}

Visualizza Personalizza il messaggio Quando Integer non è b/t 1 & 100

// Display a custom info message when integer isn't between 1 and 100.
data_validation->validate         = LXW_VALIDATION_TYPE_INTEGER;
data_validation->criteria         = LXW_VALIDATION_CRITERIA_BETWEEN;
data_validation->minimum_number   = 1;
data_validation->maximum_number   = 100;
data_validation->input_title      = "Enter an integer:";
data_validation->input_message    = "between 1 and 100";
data_validation->error_title      = "Input value is not valid!";
data_validation->error_message    = "It should be an integer between 1 and 100";

Aggiungere BA Marcos a Excel Cookbook all'interno di App C

 
#include "xlsxwriter.h"
int main() {
    /* Note the xlsm extension of the filename */
    lxw_workbook  *workbook  = workbook_new("macro.xlsm");
    lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
    worksheet_set_column(worksheet, COLS("A:A"), 30, NULL);
    /* Add a macro file extracted from an Excel workbook. */
    workbook_add_vba_project(workbook, "vbaProject.bin");
    worksheet_write_string(worksheet, 2, 0, "Press the button to say hello.", NULL);
    lxw_button_options options = {.caption = "Press Me", .macro = "say_hello",
                                  .width = 80, .height = 30};
     worksheet_insert_button(worksheet, 2, 1, &options);
    return workbook_close(workbook);
}