/// <summary>
/// Invoked when the app is launched via an activation contract. In this case we care about ActivationKind.PrintTaskSettings
/// </summary>
/// <param name="args">Information about why this was invoked</param>
protected override void OnActivated(IActivatedEventArgs args)
{
if (args.Kind == ActivationKind.PrintTaskSettings)
{
Frame rootFrame = new Frame();
if (null == Window.Current.Content)
{
rootFrame.Navigate(typeof(MainPage));
Window.Current.Content = rootFrame;
}
Window.Current.Activate();
MainPage mainPage = (MainPage)rootFrame.Content;
// Get the PrinterExtensionContext from the activation arguments
IntPtr ptr = GetPrinterExtensionContextAsIntPtr(args);
// Create the Print Helper
PrintHelperClass printHelper = new PrintHelperClass(InitializationType.PrinterExtensionContextType, (ulong)ptr);
// Can use the Windows Runtime Component above to GetPrinterName() and do BiDi queries etc.
}
if (args.Kind == ActivationKind.PrintWorkflowForegroundTask)
{
Frame rootFrame = new Frame();
if (null == Window.Current.Content)
{
rootFrame.Navigate(typeof(WorkflowPage));
Window.Current.Content = rootFrame;
}
// Ensure the current window is active
ActivateWindowAndSetDesiredSize();
// Get the main page
WorkflowPage workflowPage = (WorkflowPage)rootFrame.Content;
// Workflow stuff here
// Make sure the page knows it's handling a foreground task activation
workflowPage.LaunchType = WorkflowPage.WorkflowPageLaunchType.ForegroundTask;
// Get the activation arguments
PrintWorkflowUIActivatedEventArgs printTaskUIEventArgs = args as PrintWorkflowUIActivatedEventArgs;
// Get the session manager
PrintWorkflowForegroundSession taskSessionManager = printTaskUIEventArgs.PrintWorkflowSession;
// Add the callback handlers - these are on the main page
taskSessionManager.SetupRequested += workflowPage.OnSetupRequested;
taskSessionManager.XpsDataAvailable += workflowPage.OnXpsDataAvailable;
taskSessionManager.Start();
}
}
protected virtual Task HandleActivation(PrintWorkflowUIActivatedEventArgs args)
{
return(Task.CompletedTask);
}