WinBioIdentifyWithCallback 函式（winbio.h）

非同步擷取生物特徵樣本，判斷是否符合現有的生物特徵範本。函式會立即返回呼叫者，在獨立執行緒執行擷取與識別，並呼叫應用程式定義的回調函式以更新操作狀態。

Important

建議您從 Windows 8 開始，不再使用此函式來啟動非同步作業。請改為執行下列動作：

實作 PWINBIO_ASYNC_COMPLETION_CALLBACK 函式，以便在作業完成時接收通知。
呼叫 WinBioAsyncOpenSession 函式。在 CallbackRoutine 參數中傳遞回呼的位址。在 NotificationMethod 參數中傳遞WINBIO_ASYNC_NOTIFY_CALLBACK。擷取非同步工作階段控制碼。
使用非同步會話的 handle 來呼叫 WinBioIdentify。作業完成時，Windows 生物特徵辨識架構會使用結果配置和初始化 WINBIO_ASYNC_RESULT 結構，並使用結果結構的指標叫用回呼。
從回呼實作呼叫 WinBioFree ，以在完成使用之後釋放 WINBIO_ASYNC_RESULT 結構。

語法

HRESULT WinBioIdentifyWithCallback(
  [in]           WINBIO_SESSION_HANDLE     SessionHandle,
  [in]           PWINBIO_IDENTIFY_CALLBACK IdentifyCallback,
  [in, optional] PVOID                     IdentifyCallbackContext
);

參數

[in] SessionHandle

識別開啟生物特徵辨識工作階段的 WINBIO_SESSION_HANDLE 值。

[in] IdentifyCallback

當識別成功或失敗時， WinBioIdentifyWithCallback 函式會呼叫回調函式的位址。您必須建立回呼。

[in, optional] IdentifyCallbackContext

指標指向一個應用程式定義的資料結構，該結構會傳入回調函式的 IdentifyCallbackContext 參數。此結構可以包含自訂回呼函式設計要處理的任何資料。

返回值

如果函式成功，則會傳回 S_OK。如果函式失敗，它會傳回指出錯誤的 HRESULT 值。可能的值包括但不限於下表中的值。如需常見錯誤碼的清單，請參閱常見的 HRESULT 值。

回傳碼	Description
E_HANDLE	工作階段控制碼無效。
E_POINTER	SessionHandle 與 IdentifyCallback 參數不能是 NULL。

備註

回呼常式必須具有下列簽章：

VOID CALLBACK IdentifyCallback(
__in_opt PVOID IdentifyCallbackContext,
__in HRESULT OperationStatus,
__in WINBIO_UNIT_ID UnitId,
__in WINBIO_IDENTITY *Identity,
__in WINBIO_BIOMETRIC_SUBTYPE SubFactor,
__in WINBIO_REJECT_DETAIL RejectDetail
);

範例

以下程式碼範例呼叫 WinBioIdentifyWithCallback 來透過生物辨識掃描識別使用者。 WinBioIdentifyWithCallback 是一個非同步函式，用來配置生物辨識子系統處理另一個執行緒的生物辨識輸入。生物辨識子系統的輸出會傳送到一個名為 IdentifyCallback 的自訂回調函式。連結至 Winbio.lib 靜態程式庫，並包含下列標頭檔：

Windows.h
標準.h
Conio.h
Winbio.h

HRESULT IdentifyWithCallback(BOOL bCancel)
{
    // Declare variables.
    HRESULT hr = S_OK;
    WINBIO_SESSION_HANDLE sessionHandle = NULL;

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type 
            WINBIO_FLAG_DEFAULT,        // Configuration and access 
            NULL,                       // Array of biometric unit IDs 
            0,                          // Count of biometric unit IDs 
            WINBIO_DB_DEFAULT,          // Database ID 
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioOpenSession failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Call WinBioIdentifyWithCallback. The method is asynchronous
    // and returns immediately.
    wprintf_s(L"\n Calling WinBioIdentifyWithCallback");
    wprintf_s(L"\n Swipe the sensor ...\n");
    hr = WinBioIdentifyWithCallback( 
            sessionHandle,              // Open biometric session
            IdentifyCallback,           // Callback function
            NULL                        // Optional context
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioIdentifyWithCallback failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Cancel user identification if the bCancel flag is set.
    if (bCancel)
    {
        wprintf_s(L"\n Starting CANCEL timer...\n");
        Sleep( 7000 );

        wprintf_s(L"\n Calling WinBioCancel\n");
        hr = WinBioCancel( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCancel failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }

    // Wait for the asynchronous identification process to complete 
    // or be canceled.
    hr = WinBioWait( sessionHandle );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioWait failed. hr = 0x%x\n", hr);
    }

e_Exit:

    if (sessionHandle != NULL)
    {
       wprintf_s(L"\n Closing the session.\n");

        hr = WinBioCloseSession(sessionHandle);
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCloseSession failed. hr = 0x%x\n", hr);
        }
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Hit any key to exit...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function is the callback for WinBioIdentifyWithCallback.
// The function filters the response from the biometric subsystem and 
// writes a result to the console window.
// 
VOID CALLBACK IdentifyCallback(
    __in_opt PVOID IdentifyCallbackContext,
    __in HRESULT OperationStatus,
    __in WINBIO_UNIT_ID UnitId,
    __in WINBIO_IDENTITY *Identity,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor,
    __in WINBIO_REJECT_DETAIL RejectDetail
    )
{
    UNREFERENCED_PARAMETER(IdentifyCallbackContext);
    UNREFERENCED_PARAMETER(Identity);

    wprintf_s(L"\n IdentifyCallback executing");
    wprintf_s(L"\n Swipe processed for unit ID %d\n", UnitId);

    // The attempt to process the fingerprint failed.
    if (FAILED(OperationStatus))
    {
        if (OperationStatus == WINBIO_E_UNKNOWN_ID)
        {
            wprintf_s(L"\n Unknown identity.\n");
        }
        else if (OperationStatus == WINBIO_E_BAD_CAPTURE)
        {
            wprintf_s(L"\n Bad capture; reason: %d\n", RejectDetail);
        }
        else
        {
            wprintf_s(L"IdentifyCallback failed.");
            wprintf_s(L"OperationStatus = 0x%x\n", OperationStatus); 
        }
    }
    // Processing succeeded and the finger swiped is written
    // to the console window.
    else
    {
        wprintf_s(L"\n The following finger was used:");
        switch (SubFactor)
        {
            case WINBIO_SUBTYPE_NO_INFORMATION:
                wprintf_s(L"\n No information\n");
                break;
            case WINBIO_ANSI_381_POS_RH_THUMB:
                wprintf_s(L"\n RH thumb\n");
                break;
            case WINBIO_ANSI_381_POS_RH_INDEX_FINGER:
                wprintf_s(L"\n RH index finger\n");
                break;
            case WINBIO_ANSI_381_POS_RH_MIDDLE_FINGER:
                wprintf_s(L"\n RH middle finger\n");
                break;
            case WINBIO_ANSI_381_POS_RH_RING_FINGER:
                wprintf_s(L"\n RH ring finger\n");
                break;
            case WINBIO_ANSI_381_POS_RH_LITTLE_FINGER:
                wprintf_s(L"\n RH little finger\n");
                break;
            case WINBIO_ANSI_381_POS_LH_THUMB:
                wprintf_s(L"\n LH thumb\n");
                break;
            case WINBIO_ANSI_381_POS_LH_INDEX_FINGER:
                wprintf_s(L"\n LH index finger\n");
                break;
            case WINBIO_ANSI_381_POS_LH_MIDDLE_FINGER:
                wprintf_s(L"\n LH middle finger\n");
                break;
            case WINBIO_ANSI_381_POS_LH_RING_FINGER:
                wprintf_s(L"\n LH ring finger\n");
                break;
            case WINBIO_ANSI_381_POS_LH_LITTLE_FINGER:
                wprintf_s(L"\n LH little finger\n");
                break;
            case WINBIO_SUBTYPE_ANY:
                wprintf_s(L"\n Any finger\n");
                break;
            default:
                break;
        }
    }
}

需求

Requirement	價值觀
最低支援的用戶端	Windows 7 [僅限桌面應用程式]
支援的最低伺服器	Windows Server 2008 R2 [僅限傳統型應用程式]
目標平臺	窗戶
Header	winbio.h（包括Winbio.h）
Library	Winbio.lib 網站
DLL	Winbio.dll

另請參閱

WinBioIdentify

意見反應

此頁面對您有幫助嗎？

Last updated on 2025-11-26

共用方式為

WinBioIdentifyWithCallback 函式（winbio.h）

語法

參數

返回值

備註

範例

需求

另請參閱

意見反應

其他資源