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This is a great example for the new Print Workflow concept which shows how to modify the print content by adding a watermark and a logo. The article which introduces this sample mentions the ability to also modify the print ticket. Documentation for the WorkflowPrintTicket class indicates that it makes changing print ticket values easily. Although I can use the GetParameterInitializer(string, string) method to retrieve a value that I need to change, it seems that the PrintTicketValue class does not have methods to change the values. Including such an example to update the PrintTicket would be very helpful.

UPDATE:
I found the resolution to my question in lines 163 and 164 of WFBackgroundTasks/WfBackgroundTask.cs.

// Send the print ticket to get the Target
PrintWorkflowTarget target = printTaskSubmittedArgs.GetTarget(null);

I suggest that the comment could be updated to:

// Send an updated print ticket when getting the target to change the job ticket details
PrintWorkflowTarget target = printTaskSubmittedArgs.GetTarget(null);

hi
i am trying to build and test the project , but i got the error below.

Severity Code Description Project File Line Suppression State
Error Your project file doesn't list 'win10' as a "RuntimeIdentifier". You should add 'win10' to the "RuntimeIdentifiers" property in your project file and then re-run NuGet restore. WorkflowAndWSDACombinedSample

We implemented PWA based on this project but had a concern with the XPS print job generation. I created a MS Word document with different orientations and paper sizes and attempted to print it using the XpsOMRuntimeComponent project. It printed the job with all pages having the same orientation and paper size. We found changes were necessary in the PrintWorkflowXpsReceiver.cpp AddPage() method to properly apply the different orientations and paper sizes in the document.

After getting the page and dimensions, please get the print ticket by adding these lines:

// Get the print ticket resource
ComPtr<IXpsOMPrintTicketResource> xpsPrintTicketResource;
RETURN_HR_IF_FAILED(xpsOMPageReference->GetPrintTicketResource(&xpsPrintTicketResource));

Then modify the package writer AddPage() call to provide the print ticket resource:

// Finished modifying, so add page to package
RETURN_HR_IF_FAILED(_xpsOMPackageWriter->AddPage(xpsOMPage.Get(), &pageDimensions, nullptr, nullptr, xpsPrintTicketResource.Get(), nullptr));

an attempt was made to reference a token that does not exist error.
Event viewer does not show anything what would be the cause?

There are important files that Microsoft projects should all have that are not present in this repository. A pull request has been opened to add the missing file(s). When the pr is merged this issue will be closed automatically.

Microsoft teams can learn more about this effort and share feedback within the open source guidance available internally.

Problem Description

For example, when calling the SendInkLevelQuery method below, PrinterContextNativeRuntimeComponent.dll causes an Access Violatuon exception. Please confirm this issue.
https://github.com/microsoft/print-oem-samples/blob/master/PrinterContextNativeRuntimeComponent/PrintHelper.cpp#L132-L136

Investigation / Cause of Problem

You will be able to observe the AV at callstack below. The issue was happened in IUnknown::Release method of IPrintQueue object, because the reference counter has alredy been zero when Release was invoked.

PrinterContextNativeRuntimeComponent.dll!Microsoft::WRL::ComPtr::InternalRelease() line 176 C++
PrinterContextNativeRuntimeComponent.dll!Microsoft::WRL::ComPtr::~ComPtr() line 232 C++
PrinterContextNativeRuntimeComponent.dll!PrinterContextNativeRuntimeComponent::Printing::PrinterExtension::PrinterQueueEventHelperEventArgs::~PrinterQueueEventHelperEventArgs() C++
PrinterContextNativeRuntimeComponent.dll!PrinterContextNativeRuntimeComponent::Printing::PrinterExtension::PrinterQueueEventHelperEventArgs::[Platform::Object]::__abi_Release() C++
PrinterContextNativeRuntimeComponent.dll!__abi_winrt_ptr_dtor(const volatile Platform::Object ^ const __objArg) line 400 C++
PrinterContextNativeRuntimeComponent.dll!PrinterContextNativeRuntimeComponent::Printing::PrinterExtension::PrinterQueueEventHelperCallback::OnBidiResponseReceived(wchar_t * bstrResponse, HRESULT hrStatus) line 59 C++
PrinterContextNativeRuntimeComponent.dll!PrinterContextNativeRuntimeComponent::Printing::PrinterExtension::PrinterQueueEventHelperCallback::Invoke(long dispIdMember, const _GUID & riid, unsigned long lcid, unsigned short wFlags, tagDISPPARAMS * pDispParams, tagVARIANT * pVarResult, tagEXCEPINFO * pExcepInfo, unsigned int * puArgErr) line 128 C++
oleaut32.dll!00007fffe9c3aba4() unknown
oleaut32.dll!00007fffe9c39d50() unknown
rpcrt4.dll!00007fffe94942fb() unknown
combase.dll!00007fffe8bf99f2() unknown
oleaut32.dll!00007fffe9bb3410() unknown
combase.dll!00007fffe8bee1a3() unknown
combase.dll!00007fffe8bedf94() unknown
combase.dll!00007fffe8bfd246() unknown
combase.dll!00007fffe8b9a3a5() unknown
combase.dll!00007fffe8bfceab() unknown
combase.dll!00007fffe8bc6ee0() unknown
combase.dll!00007fffe8bc67c1() unknown
combase.dll!00007fffe8bcf6cd() unknown
combase.dll!00007fffe8bce0dd() unknown
combase.dll!00007fffe8bcfebe() unknown
combase.dll!00007fffe8bcf896() unknown
Windows.UI.dll!00007fffdb6c509c() unknown
Windows.UI.dll!00007fffdb6c4edb() unknown
Windows.UI.Xaml.dll!00007fffda7c4f00() unknown
Windows.UI.Xaml.dll!00007fffda7c4e9f() unknown
twinapi.appcore.dll!00007fffe4964c2a() unknown
twinapi.appcore.dll!00007fffe4937a66() unknown
SHCore.dll!00007fffe95dc315() unknown
kernel32.dll!00007fffe89c7974() unknown
ntdll.dll!00007fffea2da271() unknown

Value Name Type
◢ temp 0x000001cc5dae1150 {...} IPrinterQueue *
◢ IDispatch {...} IDispatch
◢ IUnknown {...} IUnknown

__vfptr 0x0000000000000000 {???, ???, ???} void * *

Workaround

To avoild the AV, I added m_printerQueue->AddRef() methodimmediately after the Attach in the PrinterQueueEventHelperEventArgs.

            m_printerQueueEventHR = hresult;
            IPrinterQueue* qtmp = (IPrinterQueue*)(void*)printerQueue;
            m_printerQueue.Attach(qtmp);
            m_printerQueue->AddRef(); // Workaround
            m_printerQueueEventResponse = str;