LVectorLayer::EnumObjectsCallBack
#include "ltwrappr.h"
virtual L_INT LVectorLayer::EnumObjectscallBack(pVector, pObject)
pVECTORHANDLE pVector; |
/* pointer to the class object's associated vector handle */ |
pVECTOROBJECT pObject; |
/* pointer to a vector object */ |
Processes each vector object enumerated by the LVectorLayer::EnumObjects function.
Parameter |
Description |
pVector |
Pointer to the class object's associated vector image that contains the objects to enumerate. |
pObject |
Pointer to the vector object being processed. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
The LVectorLayer::EnumObjects function calls this function as it gets a pointer to each vector object.
To use this function, derive a class from LVectorLayer and override the EnumObjectsCallBack member function. Note that LVectorLayer::EnumObjectsCallBack does not return an LVectorObject object.
You can attach the pVECTOROBJECT pObject to an LVectorObject class object and call LVectorObject::LockObject and LVectorObject::UnlockObject to get detailed information about each vector object.
Required DLLs and Libraries
LVKRN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
See Also
Functions: |
Example
//Example76
// This example copies all objects from active layer of vector source to vector dest (active layer)
class LMyVectorLayer: public LVectorLayer
{
public:
LVectorBase *m_pVectorDst;
public:
LMyVectorLayer() {};
virtual ~LMyVectorLayer(){};
virtual L_INT EnumObjectsCallBack(pVECTORHANDLE pVector, pVECTOROBJECT pObject);
};
L_INT LMyVectorLayer::EnumObjectsCallBack(pVECTORHANDLE pVector, pVECTOROBJECT pObject)
{
LVectorBase VectorBase(pVector);
LVectorObject VectorObject(pObject, &VectorBase);
m_pVectorDst->CopyObject(&VectorObject);
VectorBase.SetHandle(NULL, FALSE);
return SUCCESS ;
}
L_VOID Example76(HWND hWnd, LVectorBase *pVectorDst)
{
//Load a source vector
LVectorBase VectorSrc;
VectorSrc.Load(TEXT("square3.dxf"));
//Get the active layer of source
LMyVectorLayer VectorLayer;
VectorSrc.GetActiveLayer(&VectorLayer);
//Set the destination vector where objects from source will be copied
VectorLayer.m_pVectorDst = pVectorDst;
//Enumerate all objects in Active layer (and copy to dest vector)
VectorLayer.EnumObjects();
}