Base class providing generic properties for various kinds of graphic objects. 為各種圖形對象提供一般屬性的基類(lèi)。
To create a watermark that appears on every page in a document, insert a drawing object in a header or footer. 如果要創(chuàng )建在文檔中每一頁(yè)上都能顯示的水印,可在頁(yè)眉或頁(yè)腳中插入圖形對象。