Issues with GetAppLicenseAsync in MFC C++ Application.

Question

In the application, there is an MFC project and a Windows Runtime Component (Universal Windows) project, see my previous question (https://learn.microsoft.com/en-us/answers/questions/2105663/issues-with-requestpurchaseasync-in-mfc-c-applicat?comment=question#comment-1826305). Now, there is a new method in Class1 to check if User Has Subscription on addons, implemented as follows:

bool Class1::CheckIfUserHasSubscription()

{

Windows::Services::Store::StoreContext^ storeContext;

storeContext = StoreContext::GetDefault();

create_task(storeContext->GetAppLicenseAsync()).then([this](StoreAppLicense^ license)

{

    auto addOnLicenses = license->AddOnLicenses;

    for (const auto& addOnLicense : addOnLicenses)

    {

        if (addOnLicense->Value->IsActive)

            return true;

    }

}, task_continuation_context::get_current_winrt_context());

return false;

}

After using the RequestPurchaseAsync method to "purchase" a license, the CheckIfUserHasSubscription() method is called. Despite successfully purchasing, the method returns false. It appears that the loop "for (const auto& addOnLicense : addOnLicenses)" is not executed and the check in the loop is not performed. What could be the mistake? Thank you.

Answer 1

Hi,

Have you checked if addOnLicense->Value->IsActive value is true?

create_task(...).then(...) is an asynchronous operation and does not block the function return false
You can use get to wait for the result:

bool WindowsRuntimeComponent1::Class1::CheckIfUserHasSubscription(){

......



 auto taskResult = create_task (
......




  if (addOnLicense->Value->IsActive)


        return true;

   else 

        return false;


}, task_continuation_context::get_current_winrt_context ());

 initWindow->Release();  

  return taskResult.get ();
}

Best regards,

Minxin Yu

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