c++ - No LVIF_TEXT in LVN_GETDISPINFO message using LVS_OWNERDATA mode -

c++ - No LVIF_TEXT in LVN_GETDISPINFO message using LVS_OWNERDATA mode -

i've encountered unusual behavior in mfc when using list control (clistctrl) lvs_report style in "virtual mode" i.e. lvs_ownerdata style. list view placed on modeless dialog.

in dialog's oninitdialog method add together 2 columns -- "column 1" , "column 2" in 2 different ways -- using lvcolumn , listview_insertcolumn macro (1) , using cheaderctrl class hditem construction (2).

when using first method (1), in lvn_getdispinfo message handler (message handled dialog, simple on_notify) receive mask (nmlvdispinfo.item.mask member) different bits set (lvif_text, lvif_image, lvif_state, lvif_indent etc.), after filling appropriate fields in nmlvdispinfo.item structure, works fine.

but, when using sec method (2) involving cheaderctrl class, bit in mask set lvif_indent, never receive mask else set.

here pieces of code utilize add together columns:

method 1 (1):

lvcolumn col; col.mask = lvcf_text | lvcf_width; col.psztext = _t("column 1"); col.cx = 100; listview_insertcolumn(m_mylist, 0, &col); //m_mylist of clistctrl type col.psztext = _t("column 2"); listview_insertcolumn(m_mylist, 1, &col);

and method 2 (2):

hditem hditem; hditem.mask = hdi_text | hdi_format | hdi_width; hditem.fmt = hdf_string; hditem.cxy = 100; hditem.psztext = _t("column 1"); hditem.cchtextmax = _tcslen(hditem.psztext); m_mylist.getheaderctrl()->insertitem(0, &hditem); others_info.psztext = _t("column 2"); others_info.cchtextmax = _tcslen(hditem.psztext); m_mylist.getheaderctrl()->insertitem(1, &hditem);

what perchance cause such behavior?

method 2 incorrectly using others_info operations not others. looks first insertitem using text length perchance 0. sec phone call insertitem reuses same hditem construction hasn't been changed since first call.

c++ mfc