Solved

ListView_InsertItem - Failed

Posted on 2003-12-02
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822 Views
Last Modified: 2013-11-20
Dear Experts,

I am trying to insert a new item into a ListView control.

The following code failes...

LVITEM stLVI;
char   szBuf[6];
memset(szBuf, '\0', sizeof(szBuf));
strcpy(szBuf,"Hello");
stLVI.pszText = szBuf;
stLVI.cchTextMax = sizeof(szBuf);
stLVI.iItem = 0;
stLVI.iSubItem = 0;
stLVI.mask = LVIF_PARAM | LVIF_IMAGE | LVIF_TEXT;
stLVI.iImage = 2;
stLVI.lParam = 0;
ListView_InsertItem(listViewWindow,&stLVI);

Any suggestion?

Thanks in advance.

Regards
Anbuselvan
0
Comment
Question by:Anbuselvan
  • 3
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7 Comments
 
LVL 23

Assisted Solution

by:Roshan Davis
Roshan Davis earned 500 total points
ID: 9864197
Which style of list you are using ... "Report Style", if yes, before adding the Item you have to add the Column first... like this

      HWND listViewWindow = GetDlgItem(IDC_LIST1)->m_hWnd;

      // Add columns
      LVCOLUMN lvColumn;
      char szLabel[50];
    lvColumn.mask = LVCF_TEXT|LVCF_WIDTH;
    lvColumn.cx = 125;
    lvColumn.pszText = szLabel;

    // Column 0
    strcpy(szLabel,"Column 1");
    ListView_InsertColumn(listViewWindow,0,&lvColumn);


      LVITEM stLVI;
      char   szBuf[6];
      memset(szBuf, '\0', sizeof(szBuf));
      strcpy(szBuf,"Hello");
      stLVI.pszText = szBuf;
      stLVI.cchTextMax = sizeof(szBuf);
      stLVI.iItem = 0;
      stLVI.iSubItem = 0;
      stLVI.mask = LVIF_PARAM | LVIF_IMAGE | LVIF_TEXT;
      stLVI.iImage = 2;
      stLVI.lParam = 0;
      ListView_InsertItem(listViewWindow,&stLVI);

Good Luck
0
 

Author Comment

by:Anbuselvan
ID: 9865198
Hi roshmon,

  Thanks for your immediate suggestion.

  But, I have already three columns in my report style listview.

  The given is working fine in my dialog based application with listview control.

  But, I am doing one hook application. I need to hook one theird party application and
  clear the list items and add a new item into that.

  Here, I am facing the problem that I have mentioned.

  Any suggestion?

Thanks in advance.

Regards,
Anbuselvan
0
 
LVL 23

Accepted Solution

by:
Roshan Davis earned 500 total points
ID: 9865277
Then you have to subclass that listcontrol and add strings

These links might help you

http://www.codeproject.com/dll/subhook.asp - Cross Process Subclassing
http://www.codeproject.com/threads/winspy.asp - Three Ways to Inject Your Code into Another Process

Good luck
0
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Author Comment

by:Anbuselvan
ID: 9880698
Hi roshmon,

The given links are very useful. Thanks.

Actually my code is working fine.

But, what I notised is wrong.

The given value is inserted successfully in the list control. But, it is not visibled. So, that I couldn't realised.

I can get the list count = 1.

But, I couldn't see the values in the list control.

Any possible reason?

Thanks.

Regards,
Anbu
0
 
LVL 23

Expert Comment

by:Roshan Davis
ID: 9881051
Probably string that you are giving becoming out of scope.
I'm checking on that....
Rosh :)
0
 

Expert Comment

by:ArchMD
ID: 9995215
Hi,

Have you  created the resource using the resource editor?
If so in the general page of the properties of the control there is an checkbox called visible.
Make sure that is ticked.
Even if you are creating the control dynamically then also during create you have to specify the VISIBLE style.

Regards,
ArchMD
0

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