我想创建一个包含多页的文档,并且每页上都描绘了一个 wpf 窗口。
我设法使用 PrintDialog 和 PrintVisual 打印了一个窗口。然而,这似乎只适用于一页?任何想法如何构建包含多页的文档并打印完整集。
我可以插入该视觉对象(在代码中引用)并将其作为页面插入文档中并在此之后打印吗?
方法真的很糟糕吗?有没有其他方法可以解决这个问题?
Sub Print (Dim ele As FrameWorkElement)
Dim margin As Double = 30
Dim titlePadding As Double = 10
Dim printDlg As PrintDialog = New PrintDialog()
printDlg.PrintTicket.PageOrientation = PageOrientation.Landscape
If (printDlg.ShowDialog() <> True) Then Return
Dim formattedText As FormattedText = New FormattedText(Name, CultureInfo.GetCultureInfo("en-us"),
FlowDirection.LeftToRight, New Typeface("Verdana"), 25, Brushes.Black)
formattedText.MaxTextWidth = printDlg.PrintableAreaWidth
Dim scale As Double = Math.Min(printDlg.PrintableAreaWidth / (ele.ActualWidth + (Margin * 2)),
(printDlg.PrintableAreaHeight - (formattedText.Height + titlePadding)) / (ele.ActualHeight + (Margin * 2)))
Dim visual As DrawingVisual = New DrawingVisual()
Using context As DrawingContext = visual.RenderOpen()
Dim brush As VisualBrush = New VisualBrush(ele)
context.DrawRectangle(brush, Nothing, New Rect(New Point(margin, margin + formattedText.Height + titlePadding),
New Size(ele.ActualWidth, ele.ActualHeight)))
context.DrawText(formattedText, New Point(margin, margin))
End Using
visual.Transform = New ScaleTransform(scale, scale)
printDlg.PrintVisual(visual, "")
End Sub