Control registry operations in Windows and .NET applications

OnPostEnumerateValueKey event/delegate/callback


Pascal    C++ (Lib)    C++ (VCL)    C++ (.NET)    C#    VB.NET   

CallbackRegistry     See also    


This callback is called after the iteration of the key value enumeration request has been processed by the system code which deals with the registry.


    property OnPostEnumerateValueKey : TCbRegPostEnumerateValueKeyEvent;
    TCbRegPostEnumerateValueKeyEvent = procedure( Sender : TObject; UserContext: pointer; Result: LongWord; Index: LongWord; KeyValueInformationClass: KEY_VALUE_INFORMATION_CLASS; KeyValueInformation: TCbRegInformation; var StopFiltering : boolean ) of object;

[C++ (Lib)]
    typedef void (*CbRegPostEnumerateValueKeyEvent)( CallbackRegistry* Sender, LPVOID UserContext, DWORD Result, DWORD Index, KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass, CbRegInformation *KeyValueInformation, BOOL * StopFiltering );

[C++ (VCL)]
    typedef void __fastcall (__closure *TCbRegPostEnumerateValueKeyEvent)( System::TObject* Sender, void *UserContext, unsigned Result, unsigned Index, Cbregapi::_KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass, TCbRegInformation *KeyValueInformation, bool &StopFiltering );

[C++ (.NET)]
    public delegate void CbRegPostEnumerateValueKeyEvent( CallbackRegistry^ Sender, Object^ UserContext, UInt32 Result, UInt32 Index, CbReg::KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass, CbRegInformation^ KeyValueInformation, bool %StopFiltering );

    delegate void CbRegPostEnumerateValueKeyEvent( CallbackRegistry Sender, Object UserContext, UInt32 Result, UInt32 Index, CbReg.KEY_VALUE_INFORMATION_CLASS KeyValueInformationClass, CbRegInformation KeyValueInformation, ref bool StopFiltering );

    Delegate Sub CbRegPostEnumerateValueKeyEvent( ByVal Sender As CallbackRegistry, ByVal UserContext As Object, ByVal Result As UInt32, ByVal Index As UInt32, ByVal KeyValueInformationClass As CbReg.KEY_VALUE_INFORMATION_CLASS, ByVal KeyValueInformation As CbRegInformation, ByRef StopFiltering As Boolean )


  • Sender - reference to the class that called the delegate/event handler
  • UserContext - the placeholder for the application-defined data
  • Result - win32 error value of the operation. This value is returned to the originator of the request in the case no other result is returned from the callback.
  • Index - the zero-based index of the subkey within the key
  • KeyValueInformationClass - the value that indicates the type of information to be returned by the system in the KeyValueInformation object
  • KeyValueInformation - the object that contains information being returned to the system
  • StopFiltering - if StopFiltering is set to true, no other callbacks for the created key handle will be called

Values of KeyValueInformationClass


This callback/event is called after each iteration of the key value enumeration request is processed by the registry manager in Windows. The name of the key should be obtained from the user context which must have been set in OnPreOpenKey/OnPreOpenKey callback/event handlers.
Read more about contexts.

Error handling

See Error handling topic for detailed information about how to report errors, which occur in the event handlers, back to CallbackRegistry.

See also

OnPreCreateKey     OnPreEnumerateValueKey     OnPreOpenKey    

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