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Detlef V. Calculating status...

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Delete one undo step from undo stack

Feb 8, 2011 6:01 AM

Hi,

I need to delete a single undo step (the last step) from the undo stack of InDesign.

If I use "cmdHistory->Discard(docUIDRef);" the whole undo stack is discarded.

Or is there a way to avoid a command sequence to be added to the undo stack - which would be the bettest way for my problem.

Thanks for any help

Detlef

331 Views 3 Replies Latest reply: Detlef V., Feb 9, 2011 1:58 AM

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1. Peter Schülke,

Feb 8, 2011 11:00 PM in reply to Detlef V.

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Have you seen iActionManager->PerformAction( iActiveContext, kUndoActionID )
But be aware the user can afterwards execute redo...

Best
Peter

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2. Detlef V.,

Feb 8, 2011 11:27 PM in reply to Peter Schülke

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Hi Peter,

thanks for your response.
Unfortunately I don't want to perform an undo - I need to delete it from the undo stack.

The user must not have any possibility to undo the commands executed within the last command sequence.

Detlef

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3. Detlef V.,

Feb 9, 2011 1:58 AM in reply to Detlef V.

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Hi,

now I thought that I found the solution, and it seemed to be that easy:

IAutoUndoSequence* updateSequence = CmdUtils::BeginAutoUndoSequence(frontDocUIDRef.GetDataBase());
...
...
...
CmdUtils::EndAutoUndoSequence(updateSequence);

The sequence is not added to the undo stack. And if there was no other undo step on the stack before the operation everything is fine.
But if there was something on the undo stack, and the step before is undone, the sequence also gets undone. Which in fact is not what I wanted.

So if there is any help, any idea - it would really be helpful.

Detlef

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