#include "ltwrappr.h"

virtual L_INT LVectorEllipticalArc::UnlockObject(pEllipticalArc)

Sets the object information of the class object.

This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.



Pointer to a VECTORELLIPTICALARC structure that contains the vector object information to set.


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


This function is used to update the object information of the class object.

To use this method, declare a variable of type VECTORELLIPTICALARC and pass the address to the LVectorEllipticalArc::LockObject () function. After modifying the vector object settings, call LVectorEllipticalArc::UnlockObject (). LVectorEllipticalArc::LockObject () and LVectorEllipticalArc::UnlockObject () should always be called in pairs.

Before an object has been added to the LVectorBase object, using LVectorBase::AddObject or LVectorLayer::AddObject, LVectorEllipticalArc::UnlockObject () can be used to change ALL properties of an object. However, once the object has been added to the LVectorBase object, some properties cannot be changed using LVectorEllipticalArc::UnlockObject (). Specifically, nPointCount, *Point, pszText, and pbyType cannot be changed. However, as long as the number of points does not change, the coordinates of the individual points can always be modified using LVectorEllipticalArc::UnlockObject ().

To get the current object information for a class object, call LVectorEllipticalArc::LockObject.

Required DLLs and Libraries

See Also




For an example, refer to LVectorEllipticalArc::LockObject.

Help Version 21.0.2021.4.7
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Vector C++ Class Library Help