#include "ltwrappr.h"

virtual L_INT LVectorLine::UnlockObject(pLine)

Sets the object information of the class object.

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



Pointer to a VECTORLINE 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 VECTORLINE and pass the address to the LVectorLine::LockObject () function. After modifying the vector object settings, call LVectorLine::UnlockObject (). LVectorLine::LockObject LVectorLine::LockObject () and [LVectorLine:UnlockObject () should always be called in pairs.

Before an object has been added to the LVectorBase object, using LVectorBase::AddObject or LVectorLayer::AddObject, LVectorLine::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 LVectorLine::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 LVectorLine::UnlockObject ().

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

LVectorLine::LockObject and LVectorLine::UnlockObject must be called in pairs.

Required DLLs and Libraries

See Also




For an example, refer to LVectorLayer::AddObject.

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