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IVsLiteTreeList.UpdateCounter Method

Returns the current change counter for the tree list, and is used to indicate that the list contents have changed.

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

Syntax

'Declaration
Function UpdateCounter ( _
    <OutAttribute> ByRef pCurUpdate As UInteger, _
    <OutAttribute> ByRef pgrfChanges As UInteger _
) As Integer
int UpdateCounter(
    out uint pCurUpdate,
    out uint pgrfChanges
)
int UpdateCounter(
    [OutAttribute] unsigned int% pCurUpdate, 
    [OutAttribute] unsigned int% pgrfChanges
)
abstract UpdateCounter : 
        pCurUpdate:uint32 byref * 
        pgrfChanges:uint32 byref -> int
function UpdateCounter(
    pCurUpdate : uint, 
    pgrfChanges : uint
) : int

Parameters

  • pCurUpdate
    Type: UInt32%

    [out] Pointer to the update counter of the current tree list.

  • pgrfChanges
    Type: UInt32%

    [out] Specifies changes that have occurred. Values are taken from the _VSTREEITEMCHANGESMASK enumeration.

Return Value

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

Remarks

COM Signature

From vsshell.idl:

HRESULT IVsLiteTreeList::UpdateCounter(
   [out] ULONG *pCurUpdate,
   [out] VSTREEITEMCHANGESMASK *pgrfChanges
);

Returning an update counter greater than the last one cached by a given tree will force calls to GetItemCount and LocateExpandedList as needed. The pgrfChanges parameter contains values from the _VSTREEITEMCHANGESMASK enumeration. This enumeration is for future support of dynamic tree list modification. The capability is not currently enabled. While you can assign a value to pgrfChanges, the caller will ignore the parameter.

.NET Framework Security

See Also

Reference

IVsLiteTreeList Interface

Microsoft.VisualStudio.Shell.Interop Namespace