Begin a new undo transaction. An undo transaction is defined as all actions which take place when the user selects "undo" a single time. Note: If there is already an active transaction in progress, then this increments that transaction's action counter instead of beginning a new transaction. Note: You must call TransactObject before modifying each object that should be included in this undo transaction. Note: Only available in the editor.
Target is Kismet System Library
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In
Exec
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Context
String
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The context for the undo session. Typically the tool/editor that caused the undo operation. |
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Description
Text
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The description for the undo session. This is the text that will appear in the "Edit" menu next to the Undo item. |
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Primary Object
Object Reference
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The primary object that the undo session operators on (can be null, and mostly is). |
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Out
Exec
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Return Value
Integer
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The number of active actions when BeginTransaction was called (values greater than 0 indicate that there was already an existing undo transaction in progress), or -1 on failure. |