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Walking thru a CListCtrl

How can I get the values of each row's columns and add them to an array so I can refer to them in my app when needed?? I have a CListCtrl that will have 5 columns per row and ??? rows. I know I can get the number of rows from CLitsCtrl.GetItemCount(), but the GetItem macro has me a bit baffled, I would think that it would take an Index as a parameter but it takes a LV_ITEM structure. Need explained..

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galkin

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jcorbin

ASKER

I tried this to get the contents of the ListCtrl and write it to a file

int j;
      char myCol;
      LV_ITEM * myRow;
      CFileException e;
      CString FilePath = "crontab.txt";
      CStdioFile f;

      if(!f.Open(FilePath, CFile::modeCreate|CFile::modeWrite|CFile::typeText|CFile::modeNoTruncate, &e))
      {
            afxDump << "File could not be opened " << e.m_cause << "\n";
      }

      for (j=0;j<m_CronList.GetItemCount();j++)
      {
      f.SeekToEnd();
      myRow->iItem = j;
      myRow->iSubItem = 0;
      myCol = m_CronList.GetItem(myRow);

But myCol is returning junk, is my declaration of the LV_ITEM correct?? Sorry I am a VB & Java programmer, just learning to use MFC..

John

WBerthin

I have successfully used the CListCtrl function
CString GetItemText( int nItem, int nSubItem ) const;
to do this, type of thing.

(read nItem as row and nSubItem as Column)

Let me know if you need to see more code.

jcorbin

ASKER

Yes I'd like to see the code, I tried this

CString myRow;
myRow = m_MyListView.GetItemText(1,1);

and it returned nothing even tho there is text in the 1st and 2nd columns....

John

WBerthin

I cannot immediately see the problem with trying
CString myRow = m_MyListView.GetItemText(1,1);

BUT I'll see if I can help here, John.
Is the m_MyListView in your code a object of CListCtrl type?

My code below copies the full contents of a list control item
from a source item to a destination item including all
columns (in report style). The code looks like this
and works just fine for me:

//THE SOURCE ITEM'S INDEX IS nSource
//THE DESTINATION ITEM'S INDEX IS nDestination
//m_ListControl IS A CListCtrl OBJECT
//IN A CLASS DERIVED FROM CView

//GET THE INFORMATION ON THE ITEM TO BE COPIED
char szLabel[256];
LV_ITEM lvi;
ZeroMemory(&lvi, sizeof(LV_ITEM));
lvi.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_STATE | LVIF_PARAM;
lvi.stateMask = LVIS_DROPHILITED | LVIS_FOCUSED | LVIS_SELECTED;
lvi.pszText = szLabel;
lvi.iItem = nSource;
lvi.cchTextMax = 255;
m_ListControl.GetItem(&lvi);

//AT THIS POINT lvi CONTAINS THE INFORMATION ON THE ITEM
//TO BE COPIED

//CREATE THE NEW ITEM
lvi.iItem = nDestination;
m_ListControl.InsertItem(&lvi);

//NOW THE NEW ITEM CONTAINS A COPY OF THE INFORMATION
//EXCEPT FOR THE COLUMN INFORMATION IN REPORT VIEW

//THEN I EXTRACT THE TEXT INFORMATION COLUMN BY
//COLUMN FROM ONE ITEM AND COPY IT TO THE OTHER
CHeaderCtrl* pHeader = (CHeaderCtrl*)m_ListControl.GetDlgItem(0);
int nColumnCount = pHeader->GetItemCount();
lvi.mask = LVIF_TEXT;
lvi.iItem = nDestination;
for(int col=1; col<nColumnCount; col++)
{
strcpy(lvi.pszText, (LPCTSTR)(m_ListControl.GetItemText(nSource, col)));
lvi.iSubItem = col;
m_ListControl.SetItem(&lvi);
)

//NOW nDestination IS A COMPLETE COPY OF nSource
//INCLUDING ALL COLUMNS

I assume
strcpy(lvi.pszText, (LPCTSTR)(m_ListControl.GetItemText(nSource, col)));
could copy those columns into any char* or CString array
with minor modification.

Please let me know how you make out with that.