# CannotTrackChange Event

> Occurs when a document change cannot be tracked, such as deleting a table column or merging cells; Cancel and Handled replace the default message box.

- **Product:** TX Text Control ActiveX
- **Section:** Documentation
- **Kind:** Event
- **Path:** TX Text Control ActiveX > API Reference > TXTextControl > CannotTrackChange Event
- **Web URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/llms-full.txt

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## On This Page

- [Syntax](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/#syntax)
- [Parameters](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/#parameters)
- [Data Types](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/#data-types)
- [See Also](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/cannottrackchange-event/#see-also)

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## Nearby

- **Previous:** [CanEdit Property](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/canedit-property/llms.txt)
- **Next:** [CanParagraphFormat Property](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/canparagraphformat-property/llms.txt)