CanUndoRedoCallback Delegate

Add an instance to the UndoManager to vote on whether an undo or redo operation can continue.

Namespace:  Microsoft.VisualStudio.Modeling
Assembly:  Microsoft.VisualStudio.Modeling.Sdk.12.0 (in Microsoft.VisualStudio.Modeling.Sdk.12.0.dll)

Syntax

'Declaration
Public Delegate Function CanUndoRedoCallback ( _
    isUndo As Boolean, _
    transactionItem As TransactionItem _
) As Boolean

public delegate bool CanUndoRedoCallback(
    bool isUndo,
    TransactionItem transactionItem
)

public delegate bool CanUndoRedoCallback(
    bool isUndo, 
    TransactionItem^ transactionItem
)

type CanUndoRedoCallback = 
    delegate of  
        isUndo:bool * 
        transactionItem:TransactionItem -> bool

JScript does not support delegates.

Parameters

• isUndo
  Type: System.Boolean

  true if this is an undo operation; false if this is a redo operation.

• transactionItem
  Type: Microsoft.VisualStudio.Modeling.TransactionItem

  A TransactionItem identifying the transaction.

Return Value

Type: System.Boolean

Remarks

Add an instance to the UndoManager to vote on whether an undo or redo operation can continue.

See Also

Reference

Microsoft.VisualStudio.Modeling Namespace