Undo/redo history

[Xsinode]

How I can use any command without adding it to undo/redo history ?

[Hirazi Blue]

I assume you want to disable the logging of the commands in a script?
If so look for "Disabling Command Logging Temporarily" on this page

[Xsinode]

No. I want to perform operation (using script) not adding to undo/redo history.
For example: First i'm create cube and then im use custom operator. When i'm using ctrl+z (for undo). Softimage undoing cube creation instead of custom operator.
Sorry for english.

[Mathaeus]

afaik, command has to be "registered" in order to undo the entire thing at once. Perhaps easiest way is to put your script into plugin, generated by XSI plugin wizard - it creates complete 'car hull' for your engine.

[luceric]

in the script, you have to set the undo level to 0, which will clear the undo history and turn off the recording of undo.

you cannot just suspend undo recording temporarily without clearing the existing undo stack, because what's already in the undo queue cannot correctly work anymore.

[Xsinode]

Thanks for answers

[csaez]

There's a way to encapsulate your script into one big undo step by using the BeginUndo/EndUndo commands.

Code: Select all

Application.BeginUndo()
# YOUR CODE HERE
Application.EndUndo()

If you're using python it is possible to wrap this up as a convenient decorator or context manager, here is an old blog post about this (shameless plug).

Hope this helps,
Cheers

[Xsinode]

Thanks for answers