嗨，我目前在创建或更新日历事件时遇到了如何通过 php-ews 设置类别颜色的问题。
我正在使用 Exchange 2013 服务器。
请参阅下面的基本示例：
<?php
$ews = new ExchangeWebServices($host, $username, $password, $version);
// Start building the request.
$request = new EWSType_CreateItemType();
$request->Items = new EWSType_NonEmptyArrayOfAllItemsType();
$request->Items->CalendarItem = new EWSType_CalendarItemType();
// Set the subject.
$request->Items->CalendarItem->Subject = 'Basic Calendar Item Insertion';
// Set the start and end times.
$date = new DateTime('8:00 AM');
$request->Items->CalendarItem->Start = $date->format('c');
$date->modify('+1 hour');
$request->Items->CalendarItem->End = $date->format('c');
// Set no reminders
$request->Items->CalendarItem->ReminderIsSet = false;
// Or use this to specify when reminder is displayed (if this is not set, the default is 15 minutes)
$request->Items->CalendarItem->ReminderMinutesBeforeStart = 15;
// Build the body.
$request->Items->CalendarItem->Body = new EWSType_BodyType();
$request->Items->CalendarItem->Body->BodyType = EWSType_BodyTypeType::HTML;
$request->Items->CalendarItem->Body->_ = 'This is <b>the</b> body';
// Set the item class type (not required).
$request->Items->CalendarItem->ItemClass = new EWSType_ItemClassType();
$request->Items->CalendarItem->ItemClass->_ = EWSType_ItemClassType::APPOINTMENT;
// Set the sensativity of the event (defaults to normal).
$request->Items->CalendarItem->Sensitivity = new EWSType_SensitivityChoicesType();
$request->Items->CalendarItem->Sensitivity->_ = EWSType_SensitivityChoicesType::NORMAL;
// Add some categories to the event.
$request->Items->CalendarItem->Categories = new EWSType_ArrayOfStringsType();
$request->Items->CalendarItem->Categories->String = array('Testing', 'php-ews');
// Set the importance of the event.
$request->Items->CalendarItem->Importance = new EWSType_ImportanceChoicesType();
$request->Items->CalendarItem->Importance->_ = EWSType_ImportanceChoicesType::NORMAL;
// Don't send meeting invitations.
$request->SendMeetingInvitations = EWSType_CalendarItemCreateOrDeleteOperationType::SEND_TO_NONE;
$response = $ews->CreateItem($request);
如您所见，我可以添加多个类别。
有谁知道是否可以包含类别颜色？
我是否必须调整 php-ews 库以包含此处的 C# 示例之类的代码？