Problem with LoadFromString in 7.12 (DLL Version)

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

   I'm having a problem with LoadFromString when using the DLL version of 7.12.  The old version 5 LoadFromString and SaveToString returned a string.  This was problematic because of binary data such as images. 

The new version returns a byte array.  Which is great for me since I was converting the string to a byte array anyway.  So the following code works just fine in my ASP.NET application:

Dim buffer As Byte()

Dim DataToRead As Int32

Dim pr As New QuickPDFDLL0712.PDFLibrary("C:\Quick PDF Library 7.12\DLL\QuickPDFDLL0712.dll")

Dim encoding As New System.Text.ASCIIEncoding

pr.UnlockKey("mykey")

pr.SelectImage(pr.AddImageFromFile("C:\Files\Images\image.GIF", 0))

pr.DrawImage(100, 100, 20, 30)
pr.DrawText(150, 500, "With image")

buffer = pr.SaveToString
Response.Expires = 0
Response.Buffer = True

Response.ClearHeaders()
Response.ContentType = "application/pdf"

Response.Expires = -1
DataToRead = buffer.Length
Response.Flush()
Response.OutputStream.Write(buffer, 0, DataToRead)
Response.Flush()
Response.End()

However, the following code does not work:

Dim buffer As Byte()

Dim DataToRead As Int32

Dim pr As New QuickPDFDLL0712.PDFLibrary("C:\Quick PDF Library 7.12\DLL\QuickPDFDLL0712.dll")

Dim encoding As New System.Text.ASCIIEncoding

pr.UnlockKey("mykey")

pr.SelectImage(pr.AddImageFromFile("C:\Files\Images\image.GIF", 0))

pr.DrawImage(100, 100, 20, 30)
pr.DrawText(150, 500, "With image")

Dim holderbuffer As Byte()

holderbuffer = pr.SaveToString
Dim abc As New QuickPDFDLL0712.PDFLibrary("C:\Quick PDF Library 7.12\DLL\QuickPDFDLL0712.dll")

abc.UnlockKey("mykey")

MsgBox(abc.LoadFromString(holderbuffer))
abc.DrawText(200, 600, "New from string")
buffer = abc.SaveToString
Response.Expires = 0
Response.Buffer = True

Response.ClearHeaders()
Response.ContentType = "application/pdf"

Response.Expires = -1
DataToRead = buffer.Length
Response.Flush()
Response.OutputStream.Write(buffer, 0, DataToRead)
Response.Flush()
Response.End()

The msgbox returns a 0 for LoadFromString.  This only happens for me if I put an image in the PDF.  Without an image the function works fine.  Since I'm getting a PDF in the first case, I assume that SaveToString works fine, but it's LoadFromString that's choking on the image.

Edited by Jim Sullivan - 13 Apr 09 at 11:17AM