LAnnAutomation::Undo

#include "ltwrappr.h"

virtual L_INT LAnnAutomation::Undo(uLevels=1)

L_UINT uLevels;

/* number of undo operations */

Reverses the last user action that was executed using the automated annotation functions.

Parameter	Description
uLevels	Number of undo operations to be done.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function can be used repeatedly to reverse the number of actions specified by the LAnnAutomation::SetUndoDepth function. When the stack is empty, it returns an error.

There is only one undo depth value per root container. (Subcontainers do not have their own separate values.)

Required DLLs and Libraries

LTANN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	LAnnAutomation::GetAutoContainer, LAnnAutomation::SetTool, LAnnotation::GetUserMode, LAnnAutomation::SetUndoDepth, LAnnAutomation::GetTool, LAnnContainer::SetUserMode, Class Members
Topics:	Annotation Functions: Working with the Toolbar
	Implementing Annotations
	Automated User Interface for Annotations

Example

This example reverses the last user action in automation

mode.

L_INT LAnnAutomation_UndoExample(LAnnAutomation  * pAnnAutomation)
{
    return pAnnAutomation->Undo(); 
}