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 33
*
* This tutorial shows how to set document properties for Excel file in C++,
* like 'Subject' property for summary information, 'Manager' property for
* document summary information and a custom property.
* ------------------------------------------------------------------------- */#include"EasyXLS.h"#include<conio.h>int main()
{
printf("Tutorial 33\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("Sheet1");
// Set the 'Subject' document property
workbook->getSummaryInformation()->setSubject("This is the subject");
// Set the 'Manager' document property
workbook->getDocumentSummaryInformation()->setManager("This is the manager");
// Set a custom document property
workbook->getDocumentSummaryInformation()->setCustomProperty(
"PropertyName", FILEPROPERTY_VT_NUMBER, "4");
// Export Excel file
printf("Writing file C:\\Samples\\Tutorial33 - Excel file properties.xlsx.");
workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial33 - Excel file properties.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 sets custom and details properties for Excel file
Execute the following C++ code that sets the document properties of an Excel file, properties like subject, manager and a custom property.
/*------------------------------------------------------------------------------
| Tutorial 33
|
| This tutorial shows how to set document properties for Excel file in C++.NET,
| like 'Subject' property for summary information, 'Manager' property for
| document summary information and a custom property.
-------------------------------------------------------------------------------*/using namespace System;
using namespace EasyXLS;
using namespace EasyXLS::Constants;
int main()
{
Console::WriteLine("Tutorial 33\n----------\n");
// Create an instance of the class that exports Excel files
ExcelDocument ^workbook = gcnew ExcelDocument(1);
// Set the 'Subject' document property
workbook->getSummaryInformation()->setSubject("This is the subject");
// Set the 'Manager' document property
workbook->getDocumentSummaryInformation()->setManager("This is the manager");
// Set a custom document property
workbook->getDocumentSummaryInformation()->setCustomProperty("PropertyName", FileProperty::VT_NUMBER, "4");
// Export Excel file
Console::WriteLine("Writing file C:\\Samples\\Tutorial33 - Excel file properties.xlsx.");
workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial33 - Excel file properties.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;
}
