CObArray::InsertAt

  • 项目

voidInsertAt(intnIndex**,CObject*newElement,intnCount=1);**
throw(CMemoryException);

voidInsertAt(intnStartIndex**,CObArray*pNewArray);**
throw(CMemoryException);

Parameters

nIndex

An integer index that may be greater than the value returned by GetUpperBound.

newElement

The CObject pointer to be placed in this array. A newElement of value NULL is allowed.

nCount

The number of times this element should be inserted (defaults to 1).

nStartIndex

An integer index that may be greater than the value returned by GetUpperBound.

pNewArray

Another array that contains elements to be added to this array.

Remarks

The first version of InsertAt inserts one element (or multiple copies of an element) at a specified index in an array. In the process, it shifts up (by incrementing the index) the existing element at this index, and it shifts up all the elements above it.

The second version inserts all the elements from another CObArray collection, starting at the nStartIndex position.

The SetAt function, in contrast, replaces one specified array element and does not shift any elements.

The following table shows other member functions that are similar to CObArray::InsertAt.

Class Member Function
CByteArray void InsertAt( int nIndex, BYTE newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CByteArray* pNewArray );
    throw(CMemoryException);
CDWordArray void InsertAt( int nIndex, DWORD newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CDWordArray* pNewArray );
    throw(CMemoryException);
CPtrArray void InsertAt( int nIndex, void* newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CPtrArray* pNewArray );
    throw(CMemoryException);
CStringArray void InsertAt( int nIndex, LPCTSTR newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CStringArray* pNewArray );
    throw(CMemoryException);
CUIntArray void InsertAt( int nIndex, UINT newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CUIntArray* pNewArray );
    throw(CMemoryException);
CWordArray void InsertAt( int nIndex, WORD newElement, int nCount=1 );
    throw(CMemoryException);

void InsertAt( int nStartIndex, CWordArray* pNewArray );
    throw(CMemoryException);

Example

See CObList::CObList for a listing of the CAge class used in all collection examples.

// example for CObArray::InsertAt

    CObArray array;
   
    array.Add( new CAge( 21 ) ); // Element 0
    array.Add( new CAge( 40 ) ); // Element 1 (will become 2).
    array.InsertAt( 1, new CAge( 30 ) );  // New element 1
#ifdef _DEBUG
    afxDump.SetDepth( 1 );
    afxDump << "InsertAt example: " << &array << "\n";
#endif

The results from this program are as follows:

InsertAt example: A CObArray with 3 elements
    [0] = a CAge at $45C8 21
    [1] = a CAge at $4646 30
    [2] = a CAge at $4606 40

CObArray Overview |  Class Members |  Hierarchy Chart

See Also   CObArray::SetAt, CObArray::RemoveAt