SetTopBorder
指定在具有相同段落边框设置的一组段落上方显示的边框。 💡 连续的相同样式段落被视为一个整体，因此边框添加到整个块而不是块中的每个段落。
示例
在文档中为段落上方添加顶部边框。
// How do I draw a line above a paragraph in a document?
// Separate a paragraph from the content above it using a visible border line in a document.
let doc = Api.GetDocument();
let myStyle = doc.CreateStyle("My document style");
let paraPr = myStyle.GetParaPr();
paraPr.SetTopBorder("single", 24, 0, 255, 111, 61);
let paragraph = doc.GetElement(0);
paragraph.SetStyle(myStyle);
paragraph.AddText("This is the first paragraph. ");
paragraph.AddText("The paragraph properties styled above set a border above it.");