GraphUndoManager.AddOrMerge(IMergeableUndo) Method
Definition
Important
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Adds an undo unit to the undo stack, potentially merging it with other undo units on the stack or dropping it if it's empty. If it has UndoOption.AddForce then it will always be added even if it is empty. This is handy for compound operations like moving nodes, drag/drop or label editing where you merge a series of undo units into one atomic unit and you need to have a sure way of starting with the Add unit even if it's initially empty.
public:
bool AddOrMerge(Microsoft::VisualStudio::GraphModel::IMergeableUndo ^ undo);public bool AddOrMerge (Microsoft.VisualStudio.GraphModel.IMergeableUndo undo);member this.AddOrMerge : Microsoft.VisualStudio.GraphModel.IMergeableUndo -> boolPublic Function AddOrMerge (undo As IMergeableUndo) As BooleanParameters
- undo
- IMergeableUndo
The Undo unit to add
Returns
true if the undo unit was added or merged successfully, false if it was disregarded