请问ole 操作word如何实现左右两个文本一个靠左一个靠右?

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比方我要在页眉部分靠左边显示文档名,靠右边显示页号。代码如下:

  Variant vSection=m_doc.OlePropertyGet("Sections").OleFunction("Item",1);
  Variant vHeader=vSection.OlePropertyGet("Headers").OleFunction("Item",
                wdHeaderFooterPrimary);
Variant vParagraph=vHeader.OlePropertyGet("Range").
                OlePropertyGet("Paragraphs").OleFunction("Item",1);

 Variant  vRange=vParagraph.OlePropertyGet("Range");
 Variant format=vRange.OlePropertyGet("ParagraphFormat");
    format.OlePropertySet("Alignment", wdAlignParagraphLeft);
  Variant endc=vRange.OlePropertyGet("End");
vRange.OlePropertySet("End",endc-1);
vRange.OleFunction("InsertBefore",WideString(left));

vRange=vParagraph.OlePropertyGet("Range");
  endc=vRange.OlePropertyGet("End");
      vRange.OleFunction("SetRange",endc,endc);
format=vRange.OlePropertyGet("ParagraphFormat");
    format.OlePropertySet("Alignment", wdAlignParagraphRight);
vRange.OleFunction("InsertBefore",WideString(right));

我想先左对齐，后右对齐，但结果全右对齐了.如何在同一行同时左对齐右对齐呢?