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LEADTOOLS Raster Imaging C DLL Help

L_AnnGetUndoDepth

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#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetUndoDepth(hObject, puUsedLevels, puMaxLevels)

HANNOBJECT hObject;

/* handle to the automation object */

L_UINT *puUsedLevels;

/* address of a variable to be updated */

L_UINT *puMaxLevels;

/* address of a variable to be updated */

Retrieves the number of user actions that can be reversed using the L_AnnUndo function.

Parameter

Description

hObject

Handle to the automation object.

puUsedLevels

Address of a variable to be updated with the number or user actions that can be reversed using L_AnnUndo. This number will be between 0 and the number retrieved in puMaxLevels.

puMaxLevels

Address of a variable to be updated with the maximum number of user actions that can be undone using L_AnnUndo. This is the value that was set using L_AnnSetUndoDepth.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

If puUsedLevels is updated with a value of 0, no user actions can be undone using the L_AnnUndo function.

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.

Platforms

Win32, x64.

See Also

Functions:

L_AnnSetUndoDepth, L_AnnUndo

Topics:

Annotation Functions: Working with the Toolbar

 

Implementing Annotations

 

Automated User Interface for Annotations

 

Implementing an Automated Annotation Program

 

Obtaining Annotation Object Information

Example

For an example, refer to L_AnnUndo.

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