ITextDocument::Undo method (tom.h)

Performs a specified number of undo operations.

Syntax

HRESULT Undo(
  long Count,
  long *pCount
);

Parameters

Count

Type: long

The specified number of undo operations. If the value of this parameter is tomFalse, undo processing is suspended. If this parameter is tomTrue, undo processing is restored.

pCount

Type: long*

The actual count of undo operations performed. This parameter can be NULL.

Return value

Type: HRESULT

If all of the Count undo operations were performed, it returns S_OK. If the method fails, it returns S_FALSE, indicating that less than Count undo operations were performed. For more information on COM error codes, see Error Handling in COM.

Requirements

See also

Conceptual

ITextDocument

Redo

Reference

Text Object Model