请教List Control显示

[gxx2019]

m_ctlGrid.SetExtendedStyle(LVS_EX_FLATSB
| LVS_EX_FULLROWSELECT
| LVS_EX_HEADERDRAGDROP
| LVS_EX_ONECLICKACTIVATE
| LVS_EX_GRIDLINES);
m_ctlGrid.InsertColumn(0, _T("处理文件名"), LVCFMT_CENTER, 150, 0);
m_ctlGrid.InsertColumn(1, _T("处理状态"), LVCFMT_CENTER, 150, 0);
m_ctlGrid.InsertColumn(2, _T("开始时间"), LVCFMT_CENTER, 150, 0);
m_ctlGrid.InsertColumn(3, _T("结束时间"), LVCFMT_CENTER, 150, 0);
我想在某一栏中显示一条数据，如
CString str = ".....";
m_ctlGrid.SetItemText(1, 2, _T(str));
为什么运行后没有显示呢？

[feilinhe]

m_ctlGrid.SetItemText(1, 2, _T(str)); 值钱先加上个
m_ctlGrid.InsertItem(行号,_T(""));其实就是第“行号”第0列

[muzizongheng]

InsertItem(LVIF_IMAGE | LVIF_TEXT, 0, strItem, 0, LVIS_SELECTED, 0/*i%6*/, NULL);
SetItemText(0, 2, strItem);
InsertItem(LVIF_IMAGE | LVIF_TEXT, 1, strItem, 0, LVIS_SELECTED, 0/*i%6*/, NULL);
SetItemText(1, 2, strItem);