主题：[求助]学习piao据打印的例子，为什么是竖着打印的？

Dim doc As New PrintDoc
Dim ra As New prt.RenderArea
doc.PageSetting.Width = 150
doc.PageSetting.Height = 80
doc.AutoRotate = False '禁止自动旋转打印内容
ra.Width = "Parent.Width"
ra.Height = "Parent.Height"
ra.Style.Borders.All = New prt.Linedef(5, Color.Red)
doc.Body.Children.Add(ra)
doc.Print()