TdxUndoRedoManager Class

The TdxUndoRedoManager class provides the undo and redo capabilities for the layout control.

Declaration

delphi

TdxUndoRedoManager = class(
    TPersistent
)

Remarks

This class allows you to manage a list of operations that can be sequentially undone or redone. In particular, you can perform the following operations using this interface:

Determine the number of available redo and undo operations (see the RedoCount and UndoCount properties).
Check whether the last redo or undo operation can be performed (see the CanRedo and CanUndo methods).
Perform the last redo or undo operation (see the Redo and Undo methods).
Clear the buffer of redo and undo operations (see the Clear method).

The TdxUndoRedoManager object is referenced by the control’s UndoRedoManager property.

Inheritance

TObject TPersistent TdxUndoRedoManager