如何用 JavaScript 通过 C++ 改变 Excel 中评论的背景
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评论被添加到单元格以记录评论内容，从细节如公式的工作方式、数据来源到审阅者的问题。在多个人在不同时间讨论或审查同一文档时，评论扮演着极其重要的角色。如何区分不同人的评论？是的，我们可以为每个评论设置不同的背景颜色。但当需要处理大量文档和评论时，手动操作是个灾难。幸运的是，Aspose.Cells 提供了一个 API，可以让你在代码中实现此功能。
如何在Excel中更改评论的颜色
当你不需要批注的默认背景色时，可以用自己关注的颜色替换它。如何更改 Excel 中批注框的背景色？
以下代码将指导你如何使用Aspose.Cells为你自己选择的评论添加喜欢的背景颜色。
这里我们为你准备了一个示例文件。该文件用于初始化下面的代码中的 Workbook 对象。
<!DOCTYPE html>
<html>
<head>
<title>Change Comment Background Color Example</title>
</head>
<body>
<h1>Change Comment Background Color Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Initialize a new workbook from the uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the newly added comment
const comment = workbook.worksheets.get(0).comments.get(0);
// change background color
const shape = comment.commentShape;
shape.fill.solidFill.color = AsposeCells.Color.Red;
// Saving the modified Excel file
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'result.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Comment background color changed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
执行上述代码，你将得到一个输出文件。
如何在Excel中评论中插入图片或图像
Microsoft Excel 允许用户极大程度地自定义电子表格的外观和感觉。甚至可以在评论中添加背景图片。添加背景图片可以是美观的选择，也可以用来强化品牌。
以下示例代码使用 Aspose.Cells API 从零开始创建一个 XLSX 文件，并在单元格 A1 添加带有图片背景的评论。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Aspose.Cells - Add Comment with Picture Example</h1>
<p>
Select an existing Excel file (optional) and an image file to attach to a comment in cell A1.
</p>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<br/><br/>
<label for="imageInput">Select image to insert in comment (required):</label>
<input type="file" id="imageInput" accept="image/*" />
<br/><br/>
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, Worksheet, Cell } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
const imageInput = document.getElementById('imageInput');
const resultDiv = document.getElementById('result');
if (!imageInput.files.length) {
resultDiv.innerHTML = '<p style="color: red;">Please select an image file to insert into the comment.</p>';
return;
}
// Instantiate or load Workbook
let workbook;
if (fileInput.files.length) {
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
workbook = new Workbook(new Uint8Array(arrayBuffer));
} else {
workbook = new Workbook();
}
// Access the first worksheet
const worksheet = workbook.worksheets.get(0);
// Get comments collection for the first sheet
const comments = worksheet.comments;
// Add a comment to cell A1 (row 0, column 0)
const commentIndex = comments.add(0, 0);
const comment = comments.get(commentIndex);
// Set comment text and font name (converted from setters to properties)
comment.note = "First note.";
comment.font.name = "Times New Roman";
// Load the selected image file and set it to the comment's shape fill imageData
const imageFile = imageInput.files[0];
const imgArrayBuffer = await imageFile.arrayBuffer();
const imageData = new Uint8Array(imgArrayBuffer);
comment.commentShape.fill.imageData = imageData;
// Save the workbook to a blob and provide a download link
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'commentwithpicture1.out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
resultDiv.innerHTML = '<p style="color: green;">Comment with picture added successfully! Click the download link to get the modified file.</p>';
});
</script>
</body>
</html>