virtual L_INT LAnnAutomation::GetUndoDepth(puUsedLevels, puMaxLevels)
Retrieves the number of user actions that can be reversed using the LAnnAutomation::Undo function.
Address of a variable to be updated with the number or user actions that can be reversed using LAnnAutomation::Undo. 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 LAnnAutomation::Undo. This is the value that was set using LAnnAutomation::SetUndoDepth.
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 LAnnAutomation::Undo function.
Win32, x64.
This example uses the following member variables:
m_AnnotationWindow should be created and initialized prior to the example
L_INT LAnnAutomation_GetUndoDepthExample(LAnnotationWindow m_AnnotationWindow)
{
L_INT nRet;
L_UINT uUsedLevels, uMaxLevels;
L_TCHAR szMsg[100];
nRet = m_AnnotationWindow.GetAutomationObject().GetUndoDepth(&uUsedLevels, &uMaxLevels);
if(nRet != SUCCESS)
return nRet;
wsprintf(szMsg,TEXT("UsedLevels[%d]\nMaxLevels[%d]"), uUsedLevels, uMaxLevels);
AfxMessageBox(szMsg);
return SUCCESS;
}
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