References ▼
Retrieves the number of user actions that can be reversed using the L_AnnUndo function.
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnGetUndoDepth(hObject, puUsedLevels, puMaxLevels)
Handle to the automation object.
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.
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.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
If puUsedLevels is updated with a value of 0, no user actions can be undone using the L_AnnUndo function.
Win32, x64.
For an example, refer to L_AnnUndo.
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