the problem you have is caused by the fact that QuickPDF does not implement Colorspaces. The image in PDF file seems to be a kind of monochrome bitmap which change it's color based on ColorSpace implementation.

 

/Marian

 

in Dave's test document can you see a black&white area on the Bottom-Right side of the document. In Acrobat it is rendered in color.

 

Was that the only problem you had Dave? Cause everithing else was indeed very well rendered with QuickPDF library.

 

I've found the problem...

 

The RenderDocumentToFile() and DARenderPageToString() return differents data.

 

 

Try this sample in VB6:

 

 

Private Sub Form_Load()

 

Dim nDocumentID As Long, nPageID As Long
Dim hImageFile As Long
Dim sDocumentString As String

'Direct Access Mode
Dim oIsed As New iSED.QuickPDF

oIsed.UnlockKey ("354538350271B47ED3104F7CEC6FED8E")

nDocumentID = oIsed.DAOpenFile("c:\test.pdf", "")
nPageID = oIsed.DAFindPage(nDocumentID, 1)
sDocumentString = oIsed.DARenderPageToString(nDocumentID, nPageID, 1, 96)

hImageFile = FreeFile()
Open "c:\outputDA.jpg" For Binary As hImageFile
Put #hImageFile, , sDocumentString
Close #hImageFile

oIsed.DACloseFile (nDocumentID)

MsgBox "Done with Direct Access Mode!"

'STD Access Mode
oIsed.LoadFromFile ("c:\test.pdf")
Call oIsed.RenderDocumentToFile(96, 1, 1, 1, "c:\outputSTD.jpg")
oIsed.RemoveDocument (oIsed.DocumentID(1))

MsgBox "Done with STD Access Mode!"

 

End Sub

 

 

 

The DARenderPageToString() returns a grayscaled image

 

Marian do you know how we can resolve this point ?

 

Best regards,

 

Loïc Carrère

 

>Was that the only problem you had Dave? Cause everithing else was >indeed very well rendered with QuickPDF library.

Create please some screenshots and send them please to support(at)quickpdf.org (or publish them in this forum).

 

In this case the problem is caused by the fact that jumping to Indirect PDF objects is not implemented inside DA* functions. The PDF contents are supposing tp make use of an Indirect ColorSpace object which will never work because of missing implementation.

Dave, this is just a "current state" of QuickPDF answer.

At the moment there are 3x problems which may affect you:

 

1) DA function are not properly implemented. It seems that these were the original PDF manipulation functions and lack of several important improvements. This can be fixed in case you are willing to sponsor this correction and the result will be exposed in source code but only to you.

 

This case you can use QuickPDF with gpViewer activeX control and you will receive the same result as: STD Access Mode functions.

 

A solution is relative simple to implement.

2) The QuickPDF does not implement color space functions. As result some of the colors are not matched within an embedded index table.

 

As result some colored areas are wrong and produce very unpleasant results.

 

Solution complexity: moderate.

 

3) The QuickPDF does not implement ICC color profiles. This is not a very critical problem but may cause that colors are different rendered between QuickPDF and Acrobat programs (Foxit renders well).

 

As result some of the colors are slightly different with relative great difference when converting CMYK to RGB colors in Magenta/Blue range.

 

Solution complexity: development has moderate complexity but require intensive study of color profile specifications.

 

Info: PDF specs are relative well defined. Most of the problems are caused by a weak implementation or the size of PDF specification !!!