Win32 listbox 怎样获取行选中事件？

如下代码段， WndProc 哪个case里做处理？wm_command？ 还是 wm_notify?
最好贴下case 处理代码。

 HWND hListBox=0;  
    hListBox = CreateWindow(WC_LISTBOX,  
        NULL,  
        WS_CHILD|WS_VSCROLL | WS_TABSTOP | LBS_STANDARD
        ,
        x, 23,
        100, rcClient.bottom - rcClient.top - 100,
        parentWnd, (HMENU)IDC_ListBox,   
        (HINSTANCE) GetWindowLong(parentWnd, GWL_HINSTANCE),   
        NULL);
    ShowWindow(hListBox,SW_SHOW);

    SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"Clear");
    SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"你好");
    SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"我好");
    SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"他好");

http://stackoverflow.com/questions/20984949/c-getting-information-from-a-listbox-with-lb-getcursel-and-lb-gettext

处理WM_COMMAND

 INT_PTR CALLBACK ListBoxExampleProc(HWND hDlg, UINT message, 
    WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_INITDIALOG:
        {
            // Add items to list. 
            HWND hwndList = GetDlgItem(hDlg, IDC_LIST1);  
            for (int i = 0; i < ARRAYSIZE(Roster); i++) 
            { 
                int pos = (int)SendMessage(hwndList, LB_ADDSTRING, 0, 
                    (LPARAM) Roster[i].achName); 
                // we do not need the rest from Microsoft's example
            } 
            // Set input focus to the list box.
            SetFocus(hwndList); 
            return TRUE;               
        } 

    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case IDOK:
        case IDCANCEL:
          EndDialog(hDlg, LOWORD(wParam));
          return TRUE;

        case IDC_LIST1:
            {
                switch (HIWORD(wParam)) 
                { 
                case LBN_DBLCLK:
                    {
                        HWND hwndList = GetDlgItem(hDlg, IDC_LIST1); 

                        // Get selected index.
                        int lbItem = (int)SendMessage(hwndList, LB_GETCURSEL, 0, 0); 

                        // display item's text 
                        TCHAR buff[MAX_PATH];
                        SendMessage(hwndList, LB_GETTEXT, lbItem, (LPARAM)buff);

                        SetDlgItemText(hDlg, IDC_EDIT1, buff); 
                        return TRUE; 
                    } 
                }
            }
            return TRUE;
        }
    }
    return FALSE;
}

示例如下:
注释很清楚。

     case WM_COMMAND:
        switch(LOWORD(wParam))
        {
            case IDC_LIST:
                // It's our listbox, check the notification code
                switch(HIWORD(wParam))
                {
                    case LBN_SELCHANGE:
                        // Selection changed, do stuff here.
                    break;
                }
            break;
            // ... other controls
        }
    break;