IVsSelectionEvents.OnElementValueChanged Method

Article
05/06/2010

Reports that an element value has changed.

Namespace: Microsoft.VisualStudio.Shell.Interop
Assembly: Microsoft.VisualStudio.Shell.Interop (in Microsoft.VisualStudio.Shell.Interop.dll)

Syntax

'Déclaration
Function OnElementValueChanged ( _
    elementid As UInteger, _
    varValueOld As Object, _
    varValueNew As Object _
) As Integer
'Utilisation
Dim instance As IVsSelectionEvents
Dim elementid As UInteger
Dim varValueOld As Object
Dim varValueNew As Object
Dim returnValue As Integer

returnValue = instance.OnElementValueChanged(elementid, _
    varValueOld, varValueNew)

int OnElementValueChanged(
    uint elementid,
    Object varValueOld,
    Object varValueNew
)

int OnElementValueChanged(
    [InAttribute] unsigned int elementid, 
    [InAttribute] Object^ varValueOld, 
    [InAttribute] Object^ varValueNew
)

abstract OnElementValueChanged : 
        elementid:uint32 * 
        varValueOld:Object * 
        varValueNew:Object -> int

function OnElementValueChanged(
    elementid : uint, 
    varValueOld : Object, 
    varValueNew : Object
) : int

Parameters

elementid
Type: System.UInt32
[in] DWORD value representing a particular entry in the array of element values associated with the selection context. For valid elementid values, see VSConstants.VSSELELEMID.

varValueOld
Type: System.Object
[in] VARIANT that contains the previous element value. This parameter contains element-specific data, such as a pointer to the IOleCommandTarget interface if elementid is set to SEID_ResultsList or a pointer to the IOleUndoManager interface if elementid is set to SEID_UndoManager.

varValueNew
Type: System.Object
[in] VARIANT that contains the new element value. This parameter contains element-specific data, such as a pointer to the IOleCommandTarget interface if elementid is set to SEID_ResultsList or a pointer to the IOleUndoManager interface if elementid is set to SEID_UndoManager.

Return Value

Type: System.Int32
If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Remarks

COM Signature

From vsshell.idl:

HRESULT IVsSelectionEvents::OnElementValueChanged(
   [in] VSSELELEMID elementid,
   [in] VARIANT varValueOld,
   [in] VARIANT varValueNew
);

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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