LVectorBase::GetGroupCount
#include "ltwrappr.h"
virtual L_INT LVectorBase::GetGroupCount()
Returns the number of groups inside the vector handle.
Returns
Number of groups.
Comments
After calling this function, LVectorBase::GetGroupByIndex can be used to iterate through the groups in a vector handle.
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::GetGroupByName, LVectorBase::GetGroupByIndex, LVectorGroup::GetGroupDesc |
Topics: |
Example
This example will copy the first group (and objects) from a vector into pVector.
L_INT LVectorBase__GetGroupCountExample(HWND hWnd, LVectorBase *pVector) { L_TCHAR szMsg[100]; LVectorGroup VectorGroup; L_INT nRet, nCount; //Load a source vector LVectorBase VectorSrc; nRet = VectorSrc.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\group.vec")); if(nRet != SUCCESS) return nRet; nCount = VectorSrc.GetGroupCount (); if (nCount > 0) { //Get first group of source nRet = VectorSrc.GetGroupByIndex(0, &VectorGroup); if (nRet == SUCCESS) { //Get the name of the first group. VECTORGROUPDESC GroupDesc; nRet = VectorGroup.GetGroupDesc(&GroupDesc); if(nRet != SUCCESS) return nRet; wsprintf(szMsg, TEXT("Group Retrieved\nName[%s]"),GroupDesc.szName); MessageBox(hWnd, szMsg, TEXT(""), MB_OK); //Create new group in destination vector LVectorGroup NewVectorGroup(&GroupDesc); nRet = pVector->AddGroup(&NewVectorGroup); if(nRet != SUCCESS) return nRet; //Copy group and objects into pVector active group nRet = pVector->CopyGroup(&NewVectorGroup, &VectorGroup); if(nRet != SUCCESS) return nRet; nRet = pVector->Save(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\erase2.vec"), FILE_VECTOR_DUMP); if(nRet != SUCCESS) return nRet; } else return nRet; } else { MessageBox(hWnd, TEXT("No groups in source"), TEXT(""), MB_OK); } return SUCCESS; }