Platforms to show: All Mac Windows Linux Cross-Platform
/DynaPDF/Create PDF with hidden data
Required plugins for this example: MBS DynaPDF Plugin, MBS Images Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /DynaPDF/Create PDF with hidden data
This example is the version from Wed, 14th Sep 2021.
Project "Create PDF with hidden data.xojo_binary_project"
FileTypes
Filetype text
End FileTypes
MenuBar MenuBar1
MenuItem UntitledMenu1 = ""
MenuItem FileMenu = "&File"
MenuItem FileQuit = "Quit"
MenuItem UntitledMenu5 = ""
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu0 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "Clear"
MenuItem UntitledMenu4 = ""
MenuItem UntitledMenu3 = ""
MenuItem UntitledMenu2 = ""
End MenuBar
Class App Inherits Application
EventHandler Sub Open()
const Compressed = false
dim pdf as new MyDynapdfMBS
dim d as new date
dim f as FolderItem = SpecialFolder.Desktop.Child("Create PDF with hidden data.pdf")
pdf.SetLicenseKey "Pro" // For this example you can use a Pro or Enterprise License
call pdf.CreateNewPDF f
call pdf.SetDocInfo pdf.kdiSubject, "My first Xojo output"
call pdf.SetDocInfo pdf.kdiProducer, "Xojo test application"
call pdf.SetDocInfo pdf.kdiTitle, "My first Xojo output"
// We want to use top-down coordinates
call pdf.SetPageCoords pdf.kpcTopDown
// disable compression of PDF, so we can read stuff in editor
if Compressed then
call pdf.SetCompressionLevel(pdf.kclMax)
else
call pdf.SetCompressionLevel(pdf.kclNone)
end if
call pdf.Append
// hide data in ICC profile
dim prof as LCMS2ProfileMBS = LCMS2ProfileMBS.CreateSRGBProfile // from LCMS2 Plugin
dim sigm as MemoryBlock = "TEST"
dim sigd as MemoryBlock = "This is hidden text appended to ICC Profile."
call prof.WriteRawTag( sigm.Int32Value(0), sigd)
dim data as string = prof.SaveProfileToString
dim h as integer = pdf.CreateICCBasedColorSpaceEx(data)
call pdf.SetExtColorSpace(h)
// write something on page
call pdf.SetFont "Times", pdf.kfsItalic, 40.0, true, pdf.kcpUnicode
call pdf.WriteFText pdf.ktaCenter, "My first Xojo output!"
call pdf.SetFont "Times", pdf.kfsItalic, 20.0, true, pdf.kcpUnicode
call pdf.WriteText 50.0, 180.0, "File created: " + d.LongDate
call pdf.EndPage
// attach file
// put attachment there without compression
call pdf.AttachFileEx("This is hidden text in an attached file.", "attachment.txt", "", Compressed)
call pdf.CloseFile
f.Launch
quit
End EventHandler
End Class
Class MyDynaPDFMBS Inherits DynaPDFMBS
EventHandler Function Error(ErrorCode as integer, ErrorMessage as string, ErrorType as integer) As integer
// output all messages on the console:
System.DebugLog str(ErrorCode)+": "+ErrorMessage
// and display dialog:
Dim d as New MessageDialog //declare the MessageDialog object
Dim b as MessageDialogButton //for handling the result
d.icon=MessageDialog.GraphicCaution //display warning icon
d.ActionButton.Caption="Continue"
d.CancelButton.Visible=True //show the Cancel button
// a warning or an error?
if BitAnd(ErrorType, me.kE_WARNING) = me.kE_WARNING then
// if user decided to ignore, we'll ignore
if IgnoreWarnings then Return 0
d.Message="A warning occurred while processing your PDF code."
// we add a third button to display all warnings
d.AlternateActionButton.Caption = "Ignore warnings"
d.AlternateActionButton.Visible = true
else
d.Message="An error occurred while processing your PDF code."
end if
d.Explanation = str(ErrorCode)+": "+ErrorMessage
b=d.ShowModal //display the dialog
Select Case b //determine which button was pressed.
Case d.ActionButton
Return 0 // ignore
Case d.AlternateActionButton
IgnoreWarnings = true
Return 0 // ignore
Case d.CancelButton
Return -1 // stop
End select
End EventHandler
Property IgnoreWarnings As Boolean
End Class
End Project
See also:
- /DynaPDF/Create PDF with Annotations
- /DynaPDF/Create PDF with Arabic
- /DynaPDF/Create PDF with Bookmarks
- /DynaPDF/Create PDF with FileLink
- /DynaPDF/Create PDF with Layers
- /DynaPDF/Create PDF with Layers Languages
- /DynaPDF/Create PDF with object2d
- /DynaPDF/Create PDF with page wrap
- /DynaPDF/Create PDF with vertical text
- /DynaPDF/Create PDF with Zapf Dingbats
The items on this page are in the following plugins: MBS DynaPDF Plugin.