ListCtrl排序

源代码及可执行文件下载地址: http://files.cnblogs.com/rainboy2010/CSortListCtrl_Demo.zip

   

界面设计中我们经常会用到ListCtrl控件,那么问题来了，如何实现ListCtrl排序呢？在这里提供一个CListCtrl的继承类CSortListCtrl类,支持某一列按照字符串,十进制或十六进制排序，默认按照字符串方式进行排序。

enum ITEM_COMPARE_TYPE

{

	/// String comparison.

	ICT_STRING,

	/// Integer comparison.

	ICT_INTEGER,

	/// Hexadecimal comparison.

	ICT_HEXADECIMAL

};

首先需要添加点击列表头的响应函数

void CSortListCtrl::OnLvnColumnclick(NMHDR *pNMHDR, LRESULT *pResult)

{

    LPNMLISTVIEW pNMLV = reinterpret_cast<LPNMLISTVIEW>(pNMHDR);



    int iColumnNumber=pNMLV->iSubItem;

    _ASSERTE(iColumnNumber >= 0);

    if (m_iColumnNumber == iColumnNumber)

    {

        m_bAscending = ! m_bAscending;

        SetSortImage(m_bAscending?0:1);

    }

    else

    {

        if(m_iColumnNumber>=0)

        {

           SetSortImage(-1);

        }

        m_iColumnNumber=iColumnNumber;

        m_bAscending=TRUE;

        SetSortImage(0);

    }



    LISTVIEW_SORT_PARAMS lvSortParams;

    lvSortParams.hwndList=m_hWnd;

    lvSortParams.iColumnNumber=iColumnNumber;

    lvSortParams.eCompareType=GetSortType(iColumnNumber);

    lvSortParams.bAscending=m_bAscending;

    SortItemsEx(&ListViewCompareFunc,(DWORD_PTR)&lvSortParams);



    *pResult = 0;

}

然后实现ListCtrl的排序函数

排序函数的形式为: int CALLBACK CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)

当在OnLvnColumnclick中使用SortItems或SortItemsEx时,此时参数lParam1,lParam2,lParamSort所对应的意义有所不同，具体含义可参考MSDN解释

int CALLBACK CSortListCtrl::ListViewCompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)

{

    LISTVIEW_SORT_PARAMS* plvSortParams=( LISTVIEW_SORT_PARAMS*)lParamSort;

    TCHAR szItemText1[MAX_PATH]={0};

    TCHAR szItemText2[MAX_PATH]={0};



    ListView_GetItemText(plvSortParams->hwndList,lParam1,plvSortParams->iColumnNumber,szItemText1,MAX_PATH);

    ListView_GetItemText(plvSortParams->hwndList,lParam2,plvSortParams->iColumnNumber,szItemText2,MAX_PATH);



    int iResult;

    switch(plvSortParams->eCompareType)

    {

    case ICT_STRING:

        iResult=_tcscmp(szItemText1,szItemText2);

        break;

    case ICT_INTEGER:

        {

            int iItemValue1 = _ttoi(szItemText1);

            int iItemValue2 = _ttoi(szItemText2); 

            iResult=Comparetor(iItemValue1,iItemValue2);

        }

        break;

    case ICT_HEXADECIMAL:

        {

            unsigned uItemValue1 = _tcstoul(szItemText1, NULL, 16);

            unsigned uItemValue2 = _tcstoul(szItemText2, NULL, 16);

            iResult = Comparetor(uItemValue1, uItemValue2);

        }

        break;

    default:

        iResult = 0;

        break;



    }



    return (plvSortParams->bAscending?iResult:-iResult);

}