List-View 排序方案一

List-View 排序方案一

 

最近需要解决List-View排序的问题，网上很多资料， 却很少有说明使用条件的，所以程序调试出问题，查阅MSDN， 有些心得，分享一下。

 

此排序方案适用条件：

仅使用于Common List-View, 而不支持Virtual List-View（或许需改进），即不支持Owner Data(窗口风格不支持LVS_OWNERDATA), 支持该风格的待续。

 

代码（部分来源于网络）。

 

struct DictListData

{

            CListCtrl * plistctrl;  

            int                                                         isub;       

            int                                                         iseq;      

};

 

BEGIN_MESSAGE_MAP()

            ON_NOTIFY(LVN_COLUMNCLICK, IDC_LIST, OnColumnclickList)

END_MESSAGE_MAP()

 

 

static int CALLBACK CompareFunc(LPARAM lParam1,LPARAM lParam2,LPARAM lParamSort)

{

            DictListData * pListData = (DictListData *)lParamSort;

            CListCtrl * pDictlistCtrl = pListData->plistctrl;

            int isub = pListData->isub;

            LVFINDINFO findInfo;

            findInfo.flags = LVFI_PARAM;

            findInfo.lParam = lParam1;

            int iItem1 = pDictlistCtrl->FindItem(&findInfo, -1);

            findInfo.lParam = lParam2;

            int iItem2 = pDictlistCtrl->FindItem(&findInfo, -1);

 

            CString strItem1 = pDictlistCtrl->GetItemText(iItem1,isub);

            CString strItem2 = pDictlistCtrl->GetItemText(iItem2,isub);

 

            if(pListData->iseq)

            {

                        return strcmp(strItem2, strItem1);

            }         

            else

            {

                        return -strcmp(strItem2, strItem1);

            }

}

 

void CXXXDlg::OnColumnclickList1(NMHDR* pNMHDR, LRESULT* pResult)

{

            NM_LISTVIEW * pNMListView = (NM_LISTVIEW * )pNMHDR;

            // TODO: Add your control notification handler code here

            DictListData *tmpp = new DictListData;

            tmpp->plistctrl = &m_List;            //Your list need to be sorted

            tmpp->isub = pNMListView->iSubItem;

            int sortnum = (int)GetProp(m_List.GetSafeHwnd(),"SORT_COLUMN");

            int sortasc = (int)GetProp(m_List.GetSafeHwnd(),"SORT_DIRECTION");

            if(sortnum == pNMListView->iSubItem)

            {

                        sortasc = (sortasc + 1) % 2;

                        SetProp(m_List.GetSafeHwnd(),"SORT_DIRECTION",(HANDLE)sortasc);

            }

 

            SetProp(m_List.GetSafeHwnd(),"SORT_COLUMN",(HANDLE)pNMListView->iSubItem);

            tmpp->iseq = sortasc;

            m_List.SortItems(CompareFunc,(LPARAM)tmpp);

 

            for (UINT i = 0; i < m_ExistingList.size(); i++)  // The  enter point

            {

                        m_List.SetItemData(i,i);

            }

 

            *pResult = 0;

}