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IVsTextStream.GetUndoManager Method

Returns the undo manager for this buffer.

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

Syntax

'Declaration
Function GetUndoManager ( _
    <OutAttribute> ByRef ppUndoManager As IOleUndoManager _
) As Integer
int GetUndoManager(
    out IOleUndoManager ppUndoManager
)
int GetUndoManager(
    [OutAttribute] IOleUndoManager^% ppUndoManager
)
abstract GetUndoManager : 
        ppUndoManager:IOleUndoManager byref -> int
function GetUndoManager(
    ppUndoManager : IOleUndoManager
) : int

Parameters

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 textmgr.idl:

HRESULT IVsTextStream::GetUndoManager(
   [out] IOleUndoManager **ppUndoManager
);

This method could be expensive, depending upon the underlying implementation of the buffer. That is, it could be very difficult to calculate the size of the buffer if it is a virtual-line-oriented implementation of the buffer, as in Visual Basic.

.NET Framework Security

See Also

Reference

IVsTextStream Interface

Microsoft.VisualStudio.TextManager.Interop Namespace