#include "ltwrappr.h"
virtual L_INT LVectorBase::Empty(L_VOID)
Deletes all layers and objects from the class object's associated vector.
This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Calling this function will not affect other settings such as camera, transformation, etc.
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. |
Functions: |
LVectorBase::IsEmpty, LVectorBase::Copy, LVectorFile::LoadFile, LVectorBase::AddLayer, LVectorBase::AddObject |
Topics: |
This example removes all layers and objects.
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LVectorBase__EmptyExample()
{
L_INT nRet;
LVectorBase Vector;
L_BOOL bEmpty;
L_TCHAR* pszMsg;
nRet = Vector.Load(MAKE_IMAGE_PATH(TEXT("random.dxf")));
if(nRet != SUCCESS)
return nRet;
nRet = Vector.IsEmpty(&bEmpty);
if(nRet != SUCCESS)
return nRet;
pszMsg = bEmpty? TEXT("Vector is Empty"): TEXT("Vector has layers/objects");
MessageBox(NULL, pszMsg, NULL, MB_OK);
nRet = Vector.Empty();
if(nRet != SUCCESS)
return nRet;
nRet = Vector.IsEmpty(&bEmpty);
if(nRet != SUCCESS)
return nRet;
pszMsg = bEmpty? TEXT("Vector is Empty"): TEXT("Vector has layers/objects");
MessageBox(NULL, pszMsg, NULL, MB_OK);
return SUCCESS;
}
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