在两个CListctrl之间拖动数据的一段代码

直接上代码：

void CReportRogueDlg::OnBegindragNewAPList(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
	// TODO: Add your control notification handler code here

	//// Save the index of the item being dragged in m_nDragIndex
	////  This will be used later for retrieving the info dragged
	m_nDragIndex = pNMListView->iItem;
	//// Create a drag image
	POINT pt;

	int nOffset = -10; //offset in pixels for drag image (positive is up and to the left; neg is down and to the right)
	if(m_lvNewAP.GetSelectedCount() > 1) //more than one item is selected
		pt.x = nOffset;
	pt.y = nOffset;

	m_pDragImage = m_lvNewAP.CreateDragImage(m_nDragIndex, &pt);
	ASSERT(m_pDragImage); //make sure it was created
	//We will call delete later (in LButtonUp) to clean this up

	CBitmap bitmap;
	if(m_lvNewAP.GetSelectedCount() > 1) //more than 1 item in list is selected
		//bitmap.LoadBitmap(IDB_BITMAP_MULTI);
		bitmap.LoadBitmap(IDB_DRAGE_MULTI);
	else
		bitmap.LoadBitmap(IDB_DRAGE_SING);
	m_pDragImage->Replace(0, &bitmap, &bitmap);

	//// Change the cursor to the drag image
	////	(still must perform DragMove() in OnMouseMove() to show it moving)
	m_pDragImage->BeginDrag(0, CPoint(nOffset, nOffset - 4));
	m_pDragImage->DragEnter(GetDesktopWindow(), pNMListView->ptAction);

		//// Set dragging flag and others
	m_bDragging = TRUE;	//we are in a drag and drop operation
	m_nDropIndex = -1;	//we don't have a drop index yet	
	m_pDragList = &m_lvNewAP; //make note of which list we are dragging from
		
	//// Capture all mouse messages
	SetCapture ();
	*pResult = 0;
}
void CReportRogueDlg::OnMouseMove(UINT nFlags, CPoint point) 
{
	//While the mouse is moving, this routine is called.
	//This routine will redraw the drag image at the present
	// mouse location to display the dragging.
	//Also, while over a CListCtrl, this routine will highlight
	// the item we are hovering over.

	//// If we are in a drag/drop procedure (m_bDragging is true)
	if (m_bDragging)
	{
		//// Move the drag image
		CPoint pt(point);	//get our current mouse coordinates
		ClientToScreen(&pt); //convert to screen coordinates
		m_pDragImage->DragMove(pt); //move the drag image to those coordinates
		// Unlock window updates (this allows the dragging image to be shown smoothly)
		m_pDragImage->DragShowNolock(false);

		//// Get the CWnd pointer of the window that is under the mouse cursor
		CWnd* pDropWnd = WindowFromPoint (pt);
		ASSERT(pDropWnd); //make sure we have a window

		//// If we drag outside current window we need to adjust the highlights displayed
		if (pDropWnd != m_pDropWnd)
		{
			if (m_nDropIndex != -1) //If we drag over the CListCtrl header, turn off the hover highlight
			{
				TRACE("m_nDropIndex is -1\n");
				CListCtrl* pList = (CListCtrl*)m_pDropWnd;
				VERIFY (pList->SetItemState (m_nDropIndex, 0, LVIS_DROPHILITED));
				// redraw item
				VERIFY (pList->RedrawItems (m_nDropIndex, m_nDropIndex));
				pList->UpdateWindow ();
				m_nDropIndex = -1;
			}
			else //If we drag out of the CListCtrl altogether
			{
				TRACE("m_nDropIndex is not -1\n");
				CListCtrl* pList = (CListCtrl*)m_pDropWnd;
				int i = 0;
				int nCount = pList->GetItemCount();
				for(i = 0; i < nCount; i++)
				{
					pList->SetItemState(i, 0, LVIS_DROPHILITED);
				}
				pList->RedrawItems(0, nCount);
				pList->UpdateWindow();
			}
		}

		// Save current window pointer as the CListCtrl we are dropping onto
		m_pDropWnd = pDropWnd;

		// Convert from screen coordinates to drop target client coordinates
		pDropWnd->ScreenToClient(&pt);

		//If we are hovering over a CListCtrl we need to adjust the highlights
		if(pDropWnd->IsKindOf(RUNTIME_CLASS (CListCtrl)))
		{			
			//Note that we can drop here
			SetCursor(LoadCursor(NULL, IDC_ARROW));
			UINT uFlags;
			CListCtrl* pList = (CListCtrl*)pDropWnd;


			if( pList->GetDlgCtrlID() != IDC_LIST_NEWAP)
			{	
				
				// Turn off hilight for previous drop target
				pList->SetItemState (m_nDropIndex, 0, LVIS_DROPHILITED);
				// Redraw previous item
				pList->RedrawItems (m_nDropIndex, m_nDropIndex);
				
				// Get the item that is below cursor
				m_nDropIndex = ((CListCtrl*)pDropWnd)->HitTest(pt, &uFlags);
				// Highlight it
				pList->SetItemState(m_nDropIndex, LVIS_DROPHILITED, LVIS_DROPHILITED);
				// Redraw item
				pList->RedrawItems(m_nDropIndex, m_nDropIndex);
				pList->UpdateWindow();
			}
		}
		else
		{
			//If we are not hovering over a CListCtrl, change the cursor
			// to note that we cannot drop here
			SetCursor(LoadCursor(NULL, IDC_NO));
		}
		// Lock window updates
		m_pDragImage->DragShowNolock(true);
	}
		
	
	CParentsDlg::OnMouseMove(nFlags, point);
}

void CReportRogueDlg::OnLButtonUp(UINT nFlags, CPoint point) 
{
	//This routine is the end of the drag/drop operation.
	//When the button is released, we are to drop the item.
	//There are a few things we need to do to clean up and
	// finalize the drop:
	//	1) Release the mouse capture
	//	2) Set m_bDragging to false to signify we are not dragging
	//	3) Actually drop the item (we call a separate function to do that)

	//If we are in a drag and drop operation (otherwise we don't do anything)
	if (m_bDragging)
	{
		// Release mouse capture, so that other controls can get control/messages
		ReleaseCapture ();

		// Note that we are NOT in a drag operation
		m_bDragging = FALSE;

		// End dragging image
		m_pDragImage->DragLeave (GetDesktopWindow ());
		m_pDragImage->EndDrag ();
		delete m_pDragImage; //must delete it because it was created at the beginning of the drag

		CPoint pt (point); //Get current mouse coordinates
		ClientToScreen (&pt); //Convert to screen coordinates
		// Get the CWnd pointer of the window that is under the mouse cursor
		CWnd* pDropWnd = WindowFromPoint (pt);
		ASSERT (pDropWnd); //make sure we have a window pointer
		// If window is CListCtrl, we perform the drop
		if (pDropWnd->IsKindOf (RUNTIME_CLASS (CListCtrl)))
		{
			m_pDropList = (CListCtrl*)pDropWnd; //Set pointer to the list we are dropping on
			DropItemOnList(m_pDragList, m_pDropList); //Call routine to perform the actual drop
		}
	}
	
	CParentsDlg::OnLButtonUp(nFlags, point);
}
void CReportRogueDlg::DropItemOnList(CListCtrl* pDragList, CListCtrl* pDropList)
{
	//This routine performs the actual drop of the item dragged.
	//It simply grabs the info from the Drag list (pDragList)
	// and puts that info into the list dropped on (pDropList).
	//Send:	pDragList = pointer to CListCtrl we dragged from,
	//		pDropList = pointer to CListCtrl we are dropping on.
	//Return: nothing.

	////Variables

    if( pDropList->GetDlgCtrlID() == IDC_LIST_NEWAP)
		return;
	// Unhilight the drop target
	pDropList->SetItemState (m_nDropIndex, 0, LVIS_DROPHILITED);

	//Set up the LV_ITEM for retrieving item from pDragList and adding the new item to the pDropList

	if(pDragList->GetSelectedCount() == 1)
	{
		// Get item that was dragged
		CString szTextLabel = pDragList->GetItemText(m_nDragIndex, 0);

	//	CString szText = pDragList->GetItemText(m_nDragIndex, 1);
		CString szBSSID = pDragList->GetItemText(m_nDragIndex, 1);
		CString szSecurity = pDragList->GetItemText(m_nDragIndex, 2);
		CString szBand = pDragList->GetItemText(m_nDragIndex, 3);
		CString szSSID = pDragList->GetItemText(m_nDragIndex, 4);
		CString szRSSI = pDragList->GetItemText(m_nDragIndex, 5);

		if(IsExist(szBSSID,szBand))
		{
			AfxMessageBox(IDS_REPORT_ROGUEAP_EXIST);
			return;
		}
		// Delete the original item (for Move operation)
		// This is optional. If you want to implement a Copy operation, don't delete.
		// This works very well though for re-arranging items within a CListCtrl.
		// It is written at present such that when dragging from one list to the other
		//  the item is copied, but if dragging within one list, the item is moved.

		// Insert item into pDropList
		// if m_nDropIndex == -1, iItem = GetItemCount() (inserts at end of list), else iItem = m_nDropIndex
	//	lvi.plvi->iItem = (m_nDropIndex == -1) ? pDropList->GetItemCount () : m_nDropIndex;
		pDragList->DeleteItem(m_nDragIndex);
		
		int nItem = pDropList->InsertItem (0xffff,szTextLabel);
	//	pDropList->SetItemText(nItem, 1, szText);
		pDropList->SetItemText(nItem, 1, szBSSID);
		pDropList->SetItemText(nItem, 2, szSecurity);
		pDropList->SetItemText(nItem, 3, szBand);
		pDropList->SetItemText(nItem, 4, szSSID);
		pDropList->SetItemText(nItem, 5, szRSSI);

		// Select the new item we just inserted
		pDropList->SetItemState (nItem, LVIS_SELECTED, LVIS_SELECTED);
	}
	else //more than 1 item is being dropped
	{
		//We have to parse through all of the selected items from the DragList
		//1) Retrieve the info for the items and store them in memory
		//2) If we are reordering, delete the items from the list
		//3) Insert the items into the list (either same list or different list)
			
		//Retrieve the selected items
		POSITION pos = pDragList->GetFirstSelectedItemPosition(); //iterator for the CListCtrl
		while(pos) //so long as we have a valid POSITION, we keep iterating
		{
	
			m_nDragIndex = pDragList->GetNextSelectedItem(pos);
			CString szTextLabel = pDragList->GetItemText(m_nDragIndex, 0);
			
		//	CString szText = pDragList->GetItemText(m_nDragIndex, 1);
			CString szBSSID = pDragList->GetItemText(m_nDragIndex, 1);
			CString szSecurity = pDragList->GetItemText(m_nDragIndex, 2);
			CString szBand = pDragList->GetItemText(m_nDragIndex, 3);
			CString szSSID = pDragList->GetItemText(m_nDragIndex, 4);
			CString szRSSI = pDragList->GetItemText(m_nDragIndex, 5);
			
			if(IsExist(szBSSID,szBand))
			{
				AfxMessageBox(IDS_REPORT_ROGUEAP_EXIST);
				continue;
			}

			pDragList->DeleteItem(m_nDragIndex);
			pos = pDragList->GetFirstSelectedItemPosition(); //iterator for the CListCtrl
			//Get the item
			int nItem = pDropList->InsertItem (0xffff,szTextLabel);
		//	pDropList->SetItemText(nItem, 1, szText);
			pDropList->SetItemText(nItem, 1, szBSSID);
			pDropList->SetItemText(nItem, 2, szSecurity);
			pDropList->SetItemText(nItem, 3, szBand);
			pDropList->SetItemText(nItem, 4, szSSID);
			pDropList->SetItemText(nItem, 5, szRSSI);
			
			// Select the new item we just inserted
			pDropList->SetItemState (nItem, LVIS_SELECTED, LVIS_SELECTED);

		} //EO while(pos) -- at this point we have deleted the moving items and stored them in memory

	
		//Iterate through the items stored in memory and add them back into the CListCtrl at the drop index

	}
}