Overlapped 建構函式
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
初始化 Overlapped 類別的新執行個體。
多載
| 名稱 | Description |
|---|---|
| Overlapped() |
初始化一個新的、空的類別實例 Overlapped 。 |
| Overlapped(Int32, Int32, Int32, IAsyncResult) |
已淘汰.
已淘汰.
已淘汰.
初始化類別的新實例 Overlapped ,設定指定的檔案位置、32 位元整數的代言柄,該事件在 I/O 操作完成時會被通知,並透過介面回傳操作結果。 |
| Overlapped(Int32, Int32, IntPtr, IAsyncResult) |
初始化類別的新實例 Overlapped ,包含指定的檔案位置、I/O 操作完成時會發出的事件代柄,以及回傳操作結果的介面。 |
Overlapped()
Overlapped(Int32, Int32, Int32, IAsyncResult)
警告
This constructor is not 64-bit compatible and has been deprecated. Use the constructor that accepts an IntPtr for the event handle instead.
警告
This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. https://go.microsoft.com/fwlink/?linkid=14202
警告
This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. http://go.microsoft.com/fwlink/?linkid=14202
初始化類別的新實例 Overlapped ,設定指定的檔案位置、32 位元整數的代言柄,該事件在 I/O 操作完成時會被通知,並透過介面回傳操作結果。
public:
Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult ^ ar);
[System.Obsolete("This constructor is not 64-bit compatible and has been deprecated. Use the constructor that accepts an IntPtr for the event handle instead.")]
public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult? ar);
[System.Obsolete("This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. https://go.microsoft.com/fwlink/?linkid=14202")]
public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult? ar);
[System.Obsolete("This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. http://go.microsoft.com/fwlink/?linkid=14202")]
public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult ar);
public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult ar);
[System.Obsolete("This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. https://go.microsoft.com/fwlink/?linkid=14202")]
public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult ar);
[<System.Obsolete("This constructor is not 64-bit compatible and has been deprecated. Use the constructor that accepts an IntPtr for the event handle instead.")>]
new System.Threading.Overlapped : int * int * int * IAsyncResult -> System.Threading.Overlapped
[<System.Obsolete("This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. https://go.microsoft.com/fwlink/?linkid=14202")>]
new System.Threading.Overlapped : int * int * int * IAsyncResult -> System.Threading.Overlapped
[<System.Obsolete("This constructor is not 64-bit compatible. Use the constructor that takes an IntPtr for the event handle. http://go.microsoft.com/fwlink/?linkid=14202")>]
new System.Threading.Overlapped : int * int * int * IAsyncResult -> System.Threading.Overlapped
new System.Threading.Overlapped : int * int * int * IAsyncResult -> System.Threading.Overlapped
Public Sub New (offsetLo As Integer, offsetHi As Integer, hEvent As Integer, ar As IAsyncResult)
參數
- offsetLo
- Int32
檔案位置的最低字,開始傳輸時。
- offsetHi
- Int32
檔案位置的最高字,開始傳輸。
- hEvent
- Int32
當 I/O 操作完成時會被通知的事件的 handle。
- ar
- IAsyncResult
一個實作 IAsyncResult 介面並提供 I/O 操作狀態資訊的物件。
- 屬性
備註
利用這個 WaitHandle.Handle 屬性取得任何由 WaitHandle 該類別衍生的管理同步事件的代柄。
你的實作 IAsyncResult 提供了 I/O 操作的狀態資訊。 將參數傳 ar 給建構子,之後再用該 AsyncResult 屬性取回。 如果為 or 方法指定Pack了回調方法,回調可以透過解壓接收到的NativeOverlapped結構來取得你的IAsyncResultUnsafePack資料。
適用於
Overlapped(Int32, Int32, IntPtr, IAsyncResult)
初始化類別的新實例 Overlapped ,包含指定的檔案位置、I/O 操作完成時會發出的事件代柄,以及回傳操作結果的介面。
public:
Overlapped(int offsetLo, int offsetHi, IntPtr hEvent, IAsyncResult ^ ar);
public Overlapped(int offsetLo, int offsetHi, IntPtr hEvent, IAsyncResult? ar);
public Overlapped(int offsetLo, int offsetHi, IntPtr hEvent, IAsyncResult ar);
new System.Threading.Overlapped : int * int * nativeint * IAsyncResult -> System.Threading.Overlapped
Public Sub New (offsetLo As Integer, offsetHi As Integer, hEvent As IntPtr, ar As IAsyncResult)
參數
- offsetLo
- Int32
檔案位置的最低字,開始傳輸時。
- offsetHi
- Int32
檔案位置的最高字,開始傳輸。
- hEvent
-
IntPtr
nativeint
當 I/O 操作完成時會被通知的事件的 handle。
- ar
- IAsyncResult
一個實作 IAsyncResult 介面並提供 I/O 操作狀態資訊的物件。
備註
要取得由 WaitHandle 該類別衍生的管理同步物件的句柄,請使用該 WaitHandle.SafeWaitHandle 屬性取得 SafeWaitHandle 物件,然後呼叫該 DangerousGetHandle 方法。
你的實作 IAsyncResult 提供了 I/O 操作的狀態資訊。 將參數傳 ar 給建構子,之後再用該 AsyncResult 屬性取回。 如果為 or 方法指定Pack了回調方法,回調可以透過解壓接收到的NativeOverlapped結構來取得你的IAsyncResultUnsafePack資料。