解决ListCtrl控件第一列文字不能居中显示的问题/修改网格线

把CListCtrl设置为Report风格，但是插入第一列的时候（InsertColumn）的时候会发现文字不能居中。即使使用了LVCFMT_CENTER，其他列都可以正常居中，但第一列仍然靠左显示。

插入第一列后，改变它的参数：

LVCOLUMN lvc;
lvc.mask = LVCF_FMT;
GetColumn(0, &lvc);
lvc.fmt &=~ LVCFMT_JUSTIFYMASK; 
lvc.fmt |= LVCFMT_CENTER;
SetColumn(0, &lvc);

第一列式不能设置格式的，MSDN里有说明： If a column is added to a list-view control with index 0 (the leftmost column) and with LVCFMT_RIGHT or LVCFMT_CENTER specified, the text is not right-aligned or centered. The text in the index 0 column is left-aligned. Therefore if you keep inserting columns with index 0, the text in all columns are left-aligned. If you want the first column to be right-aligned or centered you can make a dummy column, then insert one or more columns with index 1 or higher and specify the alignment you require. Finally delete the dummy column.

大致意思是这样的：索引为0的列（最左边的列）如果设置了LVCFMT_RIGHT或LVCFMT_CENTER属性，上面的文字并不会右对齐或居中对齐。索引为0 的列是左对齐。如果你要想第一列右对齐或者居中对齐，你可以这样做，先保留索引为0的列，其他的列均指定右对齐或居中对齐属性，最后删除索引为0的列。

下面是实例代码：

m_list.SetExtendedStyle(LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES);
CString str[] ={_T(""), _T("AAA"), _T("BBB"), _T("CCC"), _T("DDDD"), _T("EEE")};
for(int i=0; i<sizeof(str)/sizeof(str[0]); i++)
{
    m_list.InsertColumn(i, str[i], LVCFMT_CENTER, 100);
    m_list.InsertItem(i, _T(""));
    m_list.SetItemText(i, 0, _T("AAA"));
}
m_list.DeleteColumn(0);

修改网格线颜色：

 const MSG *msg = GetCurrentMessage();
    DefWindowProc(msg->message, msg->wParam, msg->lParam); //这两句不能省，否则程序会因消息循环出现异常

    // Draw the lines only for LVS_REPORT mode
    if ((GetStyle() & LVS_TYPEMASK) == LVS_REPORT)
    {
        // Get the number of columns
        CClientDC dc(this);
        CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);
        int nColumnCount = pHeader->GetItemCount();

        // The bottom of the header corresponds to the top of the line
        RECT rect;
        pHeader->GetClientRect(&rect);
        int top = rect.bottom;

        // Now get the client rect so we know the line length and
        // when to stop
        GetClientRect(&rect);

        // The border of the column is offset by the horz scroll
        int borderx = 0 - GetScrollPos(SB_HORZ);

        CPen listSepPen(PS_SOLID, 1, RGB(0, 0, 0)); //定制你的分割线的颜色
        CPen *pOldPen = dc.SelectObject(&listSepPen);

        for (int i = 0; i < nColumnCount; i++)
        {
            // Get the next border
            borderx += GetColumnWidth(i);

            // if next border is outside client area, break out
            if (borderx >= rect.right) break;

            // Draw the line.
            dc.MoveTo(borderx, top);
            dc.LineTo(borderx, rect.bottom);
        }

        // Draw the horizontal grid lines

        // First get the height
        if (!GetItemRect(0, &rect, LVIR_BOUNDS))
            return;

        int height = rect.bottom - rect.top;

        GetClientRect(&rect);
        int width = rect.right;

        for (int i = 1; i <= GetCountPerPage(); i++)
        {
            dc.MoveTo(0, top + height*i);
            dc.LineTo(width, top + height*i);
        }

        dc.SelectObject(pOldPen);