C++ Builder XE4 > Excel > Link > Access to Excel cells in "C++ Builder XE4"| + 입력 파일 정보

C++ Builder XE4

Windows 8.1 Pro (32bit)
Excel 2016

파일

코드 v0.2

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include <System.Win.ComObj.hpp>  // EXCEL処理用
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------

/*
v0.2 Apr. 13, 2018
    - add setCellValue()
    - add getCellValue()
v0.1 Apr. 13, 2018
    imported from
    http://mojelder.hatenablog.com/entry/2015/06/29/112326
*/


__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------

static String getCellValue(Variant asheet, int row, int col)
{
    return asheet.OlePropertyGet("Cells").
            OlePropertyGet("Item", row, col).OlePropertyGet("Value");
}

static String setCellValue(Variant asheet, int row, int col, WideString val)
{
    asheet.OlePropertyGet("Cells").
        OlePropertyGet("Item", row, col).OlePropertySet("Value", val);
}

void __fastcall TForm1::B_convertClick(TObject *Sender)
{
    static const WideString kXlsFile = "あいうえお.xlsx";

    Variant ExcelApp = CreateOleObject("Excel.Application");
    try
    {
        WideString inFilename = ExtractFileDir(ParamStr(0)) + "\\" + kXlsFile; // Openに使う文字列はWideString定義
        WideString inSheetname = L"チェック"; // シート名もWideString (または番号)
        Variant xls_books;
        Variant xls_abook;
        Variant xls_sheets;
        Variant xls_asheet;
        WideString writeText = "文字";  // 書き込む文字列 // WideString型で定義

        try
        {
            ExcelApp.OlePropertySet("Visible", false); // Excel not shown

            xls_books = ExcelApp.OlePropertyGet("Workbooks");
            xls_abook = xls_books.OleFunction("Open", inFilename);
            xls_sheets = xls_abook.OlePropertyGet("WorkSheets");
            xls_asheet = xls_sheets.OlePropertyGet("Item", inSheetname);

            this->Caption = getCellValue(xls_asheet, 5, 3);
            setCellValue(xls_asheet, 1, 1, writeText);

            xls_abook.OleProcedure("Save"); //開いた*.xlsxを保存
            ExcelApp.OleProcedure("Quit"); //Excel終了。
        }
        __finally
        {
            xls_asheet = Unassigned(); // 変数を初期状態に
            xls_sheets = Unassigned();
            xls_abook = Unassigned();
            xls_books = Unassigned();
        }
    }
    __finally
    {
        ExcelApp = Unassigned();
    }
}
//---------------------------------------------------------------------------