Member Avatar for abcdabid

Hi all


I am trying to create ClistCtrl with check boxes and different columns in it.

BUT

ListCtrl m_listBox;

int

i;
CString strTemp;

m_listBox.Create(WS_CHILD|WS_VISIBLE|LBS_STANDARD|WS_HSCROLL, CRect(10,10,200,200),this, 111);


m_listBox.InsertColumn(0, _T("Column 1") , LVCFMT_LEFT, 50, 0);
m_listBox.InsertColumn(1, _T("Column 2") , LVCFMT_CENTER, 100, 1);
m_listBox.InsertColumn(2, _T("Column 3") , LVCFMT_RIGHT, 100, 2);

m_listBox.SetExtendedStyle(m_listBox.GetExtendedStyle()|LVS_EX_CHECKBOXES | LVS_REPORT );



for(i = 0; i < 10; i ++)
{

strTemp.Format(_T("item"), i + 1);
m_listBox.InsertItem(i, strTemp, 0);

strTemp.Format(_T("Subitem"), i + 1);
m_listBox.SetItemText(i, 1, strTemp);

strTemp.Format(_T("SubSubitem"), i + 1);
m_listBox.SetItemText(i, 2, strTemp);

}

after using this code i can see repetition of "item" with check boxes in single column.
please tell me what is wrong OR just write few lines of code for me.

regards

Abid

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Dani AI

Generated

Two separate issues are visible in the original post.

First, the repeated "item" text is just the Format() misuse that already flagged — you need a format specifier (for example "%d") to insert the loop index into the string. Second, the reason you only see a single column with no headers is that the control is being created without the list‑view "report" style (or that LVS_REPORT was accidentally mixed into the extended styles). A plain listbox or a control created without LVS_REPORT will not show the header or multiple columns.

A minimal set of fixes (create the control as a report view, set only list‑view extended styles, and use a proper Format string):

m_listBox.Create(WS_CHILD | WS_VISIBLE | LVS_REPORT | WS_BORDER | WS_HSCROLL | WS_VSCROLL,
                 CRect(10,10,200,200), this, 111);

m_listBox.SetExtendedStyle(m_listBox.GetExtendedStyle() |
                          LVS_EX_CHECKBOXES | LVS_EX_FULLROWSELECT);

strTemp.Format(_T("Item %d"), i + 1);

Troubleshooting checklist:

  • Make sure the member is a CListCtrl (not a CListBox) and that you create it with LVS_REPORT (or set the resource control to "Report" in the dialog editor).
  • Do not OR LVS_REPORT into SetExtendedStyle — LVS_REPORT is a window style, LVSEX* constants are extended styles.
  • Call InsertColumn to add headers (widths > 0), then InsertItem / SetItemText for rows. Columns can be inserted before or after items, but the control must be in report mode to show the header.
  • If you change styles, recreate the control (styles are fixed at creation).

Following those three changes — correct Format string, LVS_REPORT at creation, and proper extended styles — will produce the multi‑column list with checkboxes and visible headers.

Recommended Answers

All 4 Replies

Member Avatar for Ancient Dragon

>>strTemp.Format(_T("item"), i + 1);

Format() function is very similar to sprintf() -- you need to add %d if you want the string to contain the value of i+1. strTemp.Format(_T("item %d"), i + 1);

Member Avatar for abcdabid

i have tried it but does not work. i am using visual studio 2005 :(

Member Avatar for Ancient Dragon

what do you mean "it doesn't work".

Member Avatar for abcdabid

i mean it does not work. i want 3 columns in my Clistctrl but i can see only on column. no heading of columns but only list of
item
item
item
item
item
item
item
item

hope you understand

:(

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