Question in Clistctrl

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Problem:

I am inserting the values in CListCtrl with

C++

int iItem = m_listModules.InsertItem(9999, csTmp);

//where csTemp is 45.

//using LVN_INSERTITEM which takes it to the function Func1() which has

NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
   
    onInsertItem(pNMListView->iItem, &m_listModules)

onInsertItem(int iItem, CListCtrl *pListCtrl)
{
     CString csRunFile;
    long ldataitem = long(pListCtrl->GetItemData(iItem));

}

This is the flow of code

Now in ldataitem i m getting 0 as a return where as i am inserting 45.

please help

Thanks in advance..

Posted 29-Aug-11 4:56am

ppontheweb.hi

Updated 29-Aug-11 4:59am

DaveAuld

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

André Kraak · Answer 1 · 2011-08-29T05:43:00

Solution 1

You should be using the GetItem[^] function.

The function GetItemData[^] returns the 32-bit application-specific value associated with the specified item. You have set no such value in the code you shown.

Answer to OP comment:

You need to specify which items information you want to retrieve, this is done in the LVITEM structure you pass to the GetItem function.
Look at the LVITEM[^] documentation.

You can use the following code:

C++

onInsertItem( int iItem, CListCtrl* pListCtrl )
{
	LVITEM plvItem;
	long lDataItem = 0;

	plvItem.mask = LVIF_TEXT;
	plvItem.iItem = iItem;
	if( pListCtrl != NULL && pListCtrl->GetItem( &plvItem ) )
		lDataItem = atol( plvItem.pszText );
}

Posted 29-Aug-11 5:43am

André Kraak

Updated 29-Aug-11 23:34pm

v3

Comments

ppontheweb.hi 29-Aug-11 11:58am

I have tried

LVITEM* plvItem = new LVITEM();
bool ldataitem = pListCtrl->GetItem(plvItem);

In this ldataitem is true and plvItem is 0 or null. it is not returning any thing.. LVITEM is totally blank.

André Kraak 29-Aug-11 12:36pm

I have updated the solution with the answer to your comment.

ppontheweb.hi 30-Aug-11 3:32am

Hi Andre in the get item plvItem->pszText is null. I used pointer instead of object

André Kraak 30-Aug-11 5:34am

Try the code right after your InsertItem statement. At this point you can be sure about the item index (iItem). Make sure that it is not -1 as the insert will have failed.

I also see I made a mistake is the code I have given. pListCtrl->GetItem( plvItem ) should be pListCtrl->GetItem( &plvItem ). I have updated the solution.

ppontheweb.hi 30-Aug-11 5:46am

InsertItem is giving 0 but GetItem is returning false...

ppontheweb.hi · Answer 2 · 2011-09-01T22:35:00

Solution 2

SQL

I used GetItemText instead of GetItemData and it solved my purpose.

Thanks

Posted 1-Sep-11 22:35pm

ppontheweb.hi

Question in Clistctrl

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Question in Clistctrl

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