PrintSupportExtensionSession.PrintTicketValidationRequested 事件

定义

命名空间:

Windows.Graphics.Printing.PrintSupport

当系统需要验证打印票证时引发。

// Register
event_token PrintTicketValidationRequested(TypedEventHandler<PrintSupportExtensionSession, PrintSupportPrintTicketValidationRequestedEventArgs const&> const& handler) const;

// Revoke with event_token
void PrintTicketValidationRequested(event_token const* cookie) const;

// Revoke with event_revoker
PrintSupportExtensionSession::PrintTicketValidationRequested_revoker PrintTicketValidationRequested(auto_revoke_t, TypedEventHandler<PrintSupportExtensionSession, PrintSupportPrintTicketValidationRequestedEventArgs const&> const& handler) const;

public event TypedEventHandler<PrintSupportExtensionSession,PrintSupportPrintTicketValidationRequestedEventArgs> PrintTicketValidationRequested;

function onPrintTicketValidationRequested(eventArgs) { /* Your code */ }
printSupportExtensionSession.addEventListener("printticketvalidationrequested", onPrintTicketValidationRequested);
printSupportExtensionSession.removeEventListener("printticketvalidationrequested", onPrintTicketValidationRequested);
- or -
printSupportExtensionSession.onprintticketvalidationrequested = onPrintTicketValidationRequested;

Public Custom Event PrintTicketValidationRequested As TypedEventHandler(Of PrintSupportExtensionSession, PrintSupportPrintTicketValidationRequestedEventArgs) 

事件类型

TypedEventHandler<PrintSupportExtensionSession,PrintSupportPrintTicketValidationRequestedEventArgs>

注解

在打印作业期间，可以随时引发此事件。 在代码验证打印票证后，调用 SetPrintTicketValidationStatus 以指示打印票证是否已解决、存在冲突或无效。