Add Image to existing PDF

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I try to add an image to existing pdf file with simple code (vb.net): 	
        QP.LoadFromFile("test.pdf", "")
        QP.SelectPage(1)
        Dim id As Integer = QP.AddImageFromFile("test_image.png", 0)
        Dim lWidth As Integer = QP.ImageWidth()
        Dim lHeight As Integer = QP.ImageHeight()
        QP.DrawImage(0, 450, lWidth, lHeight)
        QP.SaveToFile("test_updated.pdf")

But in the result PDFI can't see the image. If I create e new pdf and I add image I can see it.
there is sometihng bad ? 

Thanks 

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
fmenditto Members Profile Find Members Posts Beginner Joined: 15 Jun 16 Location: Tialy Status: Offline Points: 2	Post Options Post Reply Quote fmenditto Report Post Thanks(0) Quote Reply Topic: Add Image to existing PDF Posted: 15 Jun 16 at 11:40AM
	I try to add an image to existing pdf file with simple code (vb.net): QP.LoadFromFile("test.pdf", "") QP.SelectPage(1) Dim id As Integer = QP.AddImageFromFile("test_image.png", 0) Dim lWidth As Integer = QP.ImageWidth() Dim lHeight As Integer = QP.ImageHeight() QP.DrawImage(0, 450, lWidth, lHeight) QP.SaveToFile("test_updated.pdf") But in the result PDFI can't see the image. If I create e new pdf and I add image I can see it. there is sometihng bad ? Thanks

rweetch Members Profile Find Members Posts Senior Member Joined: 22 Feb 11 Status: Offline Points: 173	Post Options Post Reply Quote rweetch Report Post Thanks(0) Quote Reply Posted: 15 Jun 16 at 7:14PM
	does the PDF have mutlple streams? If so it could be drawing to a stream which is hidden by content on a higher stream.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3529	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 15 Jun 16 at 9:54PM
	Hi fmenditto, i'm missing a SelectImage - Add is not enough. Try this one (if it's not tiff) and it will work (Delphi): image := QP.AddImageFromFile(fstring, 0); QP.SelectImage(image); QP.SetPageDimensions(QP.ImageWidth,QP.ImageHeight); QP.DrawImage(0,0,QP.ImageWidth,QP.ImageHeight); A NormalizePage could be always good before ;-) Cheers and welcome here, Ingo
	Cheers, Ingo