Question in Clistctrl

Question

0.00/5 (No votes)

See more:

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

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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