LVectorBase::Empty
#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.
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
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. |
See Also
Functions: |
LVectorBase::IsEmpty, LVectorBase::Copy, LVectorFile::LoadFile, LVectorBase::AddLayer, LVectorBase::AddObject |
Topics: |
Example
This example removes all layers and objects.
L_INT LVectorBase__EmptyExample() { L_INT nRet; LVectorBase Vector; L_BOOL bEmpty; L_TCHAR* pszMsg; nRet = Vector.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\test.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; }