List Control subitem disappear?

Question

4.50/5 (2 votes)

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Hi,

The following is code to insert an item to listcontrl.
When i add LVIF_PARAM to lvi.mask, only first subitem is shown. (list control is set as report view mode). What is problem here??

m_lstCtrl.InsertColumn(0, L"First name" , LVCFMT_LEFT, onePercent * 35);
m_lstCtrl.InsertColumn(1, L"Middle name", LVCFMT_CENTER, onePercent * 35);
m_lstCtrl.InsertColumn(2, L"Last name", LVCFMT_LEFT, onePercent * 30);

LVITEM lvi;
// Insert #0
// Check if image available
lvi.mask = LVIF_TEXT | LVIF_PARAM ;
lvi.iItem = 0;				
lvi.iSubItem = 0;	
lvi.lParam = 100;
lvi.pszText =L"First";
m_lstCtrl.InsertItem(&lvi);
// Insert #1
lvi.iSubItem  = 1;
lvi.pszText = L"Middle";
m_lstCtrl.SetItem(&lvi);
// Insert #2
lvi.iSubItem = 2;
lvi.pszText = L"Last";
m_lstCtrl.SetItem(&lvi);

Thank.

Quy

Posted 10-May-11 20:27pm

quyps

Updated 11-May-11 7:34am

v2

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Comments

Richard MacCutchan 11-May-11 3:55am

Check the return values from your function calls for any errors. Also ensure that the item value in the SetItem() calls is the same as the return from InsertItem().

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Olivier Levrey · Accepted Answer · 2011-05-10T22:15:00

Solution 1

A quick google search reveals that a lot of people has problems using LVIF_PARAM with sub items. It may be a bug.

Try not to use LVIF_PARAM. You can for example add a list of your param and maintain both this list and the list control.

I know this solution is just a workaround but you will probably loose less time like that.

Posted 10-May-11 22:15pm

Olivier Levrey

Comments

quyps 11-May-11 13:40pm

it will do if i keep my list of param and list control in same order. thanks

quyps · Accepted Answer · 2011-05-10T23:01:00

Thank for the replies.
It is actually not a bug, I figured it out. This is a little subtle :)
LVITEM.mask (probably whole LVITEM struct) should be independently applied for every subitems. My mistake in above code is that I didnt reset lvi.mask.

so here is (at least in my case) a working version.

m_lstCtrl.InsertColumn(0, L"First name" , LVCFMT_LEFT, onePercent * 35);
m_lstCtrl.InsertColumn(1, L"Middle name", LVCFMT_CENTER, onePercent * 35);
m_lstCtrl.InsertColumn(2, L"Last name", LVCFMT_LEFT, onePercent * 30);
 
LVITEM lvi;
// Insert First#0
// Check if image available
lvi.mask = LVIF_TEXT | LVIF_PARAM ;
lvi.iItem = 0;				
lvi.iSubItem = 0;	
lvi.lParam = 100;
lvi.pszText =L"First";
m_lstCtrl.InsertItem(&lvi);

// Insert Middle#1
lvi.mask = LVIF_TEXT;
lvi.iSubItem  = 1;
lvi.pszText = L"Middle";
m_lstCtrl.SetItem(&lvi);

// Insert Last#2
lvi.mask = LVIF_TEXT;
lvi.iSubItem = 2;
lvi.pszText = L"Last";
m_lstCtrl.SetItem(&lvi);

Quy