用C++向Excel插入背景图片

在Microsoft Excel中设置工作表背景

在Microsoft Excel(例如Microsoft Excel 2019)中设置工作表的背景图片:

  1. 页面布局菜单中找到页面设置选项,然后点击背景选项。

  2. 选择一张图片来设置工作表的背景图片。

    设置工作表背景

todo:image_alt_text

使用Aspose.Cells设置工作表背景

下面的代码使用从流中读取的图像设置了一个背景图像。

#include <iostream>
#include <fstream>
#include "Aspose.Cells.h"

using namespace Aspose::Cells;

Vector<uint8_t> GetDataFromFile(const U16String& file)
{
	std::string f = file.ToUtf8();
	// open a file 
	std::ifstream fileStream(f, std::ios::binary);

	if (!fileStream.is_open()) {
		std::cerr << "Failed to open the file." << std::endl;
		return 1;
	}

	// Get file size
	fileStream.seekg(0, std::ios::end);
	std::streampos fileSize = fileStream.tellg();
	fileStream.seekg(0, std::ios::beg);

	// Read file contents into uint8_t array
	uint8_t* buffer = new uint8_t[fileSize];
	fileStream.read(reinterpret_cast<char*>(buffer), fileSize);
	fileStream.close();

	Vector<uint8_t>data(buffer, fileSize);
	delete[] buffer;

	return data;
}

using namespace Aspose::Cells;

int main()
{
	Aspose::Cells::Startup();

	// Create a new Workbook
	Workbook workbook;

	// Get the first worksheet
	Worksheet sheet = workbook.GetWorksheets().Get(0);

	Vector<uint8_t> buffer = GetDataFromFile(U16String(u"background.jpg"));

	// Set the background image for the worksheet
	sheet.SetBackgroundImage(buffer);

	// Save the Excel file
	workbook.Save(u"outputBackImageSheet.xlsx");

	// Save the HTML file
	workbook.Save(u"outputBackImageSheet.html", SaveFormat::Html);

	std::cout << "Files saved successfully." << std::endl;

	Aspose::Cells::Cleanup();
	return 0;
}

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