如何实现从一个ClistCtrl(类型是ICON的),拖拽多个ICON到另一个Clistctrl?

[waterbao]

如何实现从一个ClistCtrl(类型是ICON的),拖拽多个ICON到另一个Clistctrl?单个ICON的拖拽我已经实现了,多个的我却没有实现,请高手指点了,谢谢大家了!

[waterbao]

没有人知道吗?

[waterbao]

上面的例子，不是我要的，我的意思是，托拽多个图标的时候，显示的拖拽图标也是多个的！

[vocanicy]

给你一个创建多个拖拽图标的例子

CImageList* CArrangeDlg::CreateDragImageEx(CListCtrl *pList, LPPOINT lpPoint)
{
	if (pList->GetSelectedCount() <= 0)
		return NULL; // no row selected
	
	CRect rectSingle;
	CRect rectComplete(0,0,0,0);
	
	// Determine List Control Client width size
	pList->GetClientRect(rectSingle);
	int nWidth  = rectSingle.Width();
	
	// Start and Stop index in view area
	int nIndex = pList->GetTopIndex() - 1;
	int nBottomIndex = pList->GetTopIndex() + pList->GetCountPerPage() - 1;
	if (nBottomIndex > (pList->GetItemCount() - 1))
		nBottomIndex = pList->GetItemCount() - 1;
	
	// Determine the size of the drag image (limite for rows visibled and Client width)
	while ((nIndex = pList->GetNextItem(nIndex, LVNI_SELECTED)) != -1)
	{
		if (nIndex > nBottomIndex)
			break; 
		
		pList->GetItemRect(nIndex, rectSingle, LVIR_BOUNDS);
		
		if (rectSingle.left < 0) 
			rectSingle.left = 0;
		
		if (rectSingle.right > nWidth)
			rectSingle.right = nWidth;
		
		rectComplete.UnionRect(rectComplete, rectSingle);
	}
	
	CClientDC dcClient(this);
	CDC dcMem;
	CBitmap Bitmap;
	
	if (!dcMem.CreateCompatibleDC(&dcClient))
		return NULL;
	
	if (!Bitmap.CreateCompatibleBitmap(&dcClient, rectComplete.Width(), rectComplete.Height()))
		return NULL;
	
	CBitmap *pOldMemDCBitmap = dcMem.SelectObject(&Bitmap);
	// Use green as mask color
	dcMem.FillSolidRect(0, 0, rectComplete.Width(), rectComplete.Height(), RGB(0,255,0));
	
	// Paint each DragImage in the DC
	nIndex = pList->GetTopIndex() - 1;
	while ((nIndex = pList->GetNextItem(nIndex, LVNI_SELECTED)) != -1)
	{	
		if (nIndex > nBottomIndex)
			break;
		
		CPoint pt;
		CImageList* pSingleImageList = pList->CreateDragImage(nIndex, &pt);
		
		if (pSingleImageList)
		{
			pList->GetItemRect(nIndex, rectSingle, LVIR_BOUNDS);
			pSingleImageList->Draw( &dcMem, 
				0, 
				CPoint(rectSingle.left - rectComplete.left, 
									       rectSingle.top - rectComplete.top), 
										   ILD_NORMAL);
			pSingleImageList->DeleteImageList();
			delete pSingleImageList;
		}
	}
	
	dcMem.SelectObject(pOldMemDCBitmap);
	CImageList* pCompleteImageList = new CImageList;
	pCompleteImageList->Create(rectComplete.Width(), rectComplete.Height(), ILC_COLORDDB | ILC_MASK, 0, 1);
	pCompleteImageList->Add(&Bitmap, RGB(0, 255, 0)); // Green is used as mask color
	Bitmap.DeleteObject();
	
	if (lpPoint)
	{
		lpPoint->x = rectComplete.left;
		lpPoint->y = rectComplete.top;
	}
	
	return pCompleteImageList;
}

[fronz]

mark，
不是特别在行，
不过得从消息响应入手吧。
你是用鼠标点击选，还是用圈选的？

[dyw]

http://www.codeproject.com/listctrl/dragtest.asp