绘制的线宽
QAxObject *range = pSheet->querySubObject("Range(const QString&)", “A1:B2”);
range->dynamicCall("BorderAround", iStyle, iWidth, iColorIndex);
iStyle值:0- no line; 1-solid; 2-big dot;3-small dot;4-dash dot; 5-dash dot dot
iWidth即宽度值
iColorIndex边框颜色1-black;2-white;3-red;4-green;5-blue; 6-yellow; 7-pink;8-dark blue;