[Xpert]how to deal with the clipBoxes

[hzeng]

Hi,    Thanks. And I have another problem about the clipBoxes. In the Xv driver,the clipBoxes is determinded by the drwwindow, and in every founction interface, there are both drw_x,drw_y,drw_w,drw_h and the clipBoxes. I am not clear the use of clipBoxes, how can I fully use the clipBoxes when the driver support clip? Thanks again! Hzeng