Advanced MFC Programming

Chapter 14. Views
{
bWorking=ff.FindNextFile();
if(!ff.IsDots())
{
szFileName=ff.GetFileName();
lvi.mask=LVIF_TEXT | LVIF_IMAGE;
lvi.iItem=i;
lvi.iSubItem=0;
lvi.pszText=(LPSTR)(const char *)szFileName;
lvi.iImage=ff.IsDirectory() ? 0:1;
……
GetListCtrl().InsertItem(&lvi);
Unlike tree control, there is no handle here to identify a special item. All the items are identified by
their indices, this means if we display items in “list” or “report” style, the item located at the first row is
item 0, the next row is item 1… and so on. When inserting an item, we need to specify the item index by
using member iItem of LV_ITEM structure.
We store file size (for directory, display nothing), file type (“File” or “Folder”), the updated time in a
string array that will be used to add text for the sub-items. These attributes of file can be retrieved by
calling functions CFileFind::GetLength(), CFileFind::IsDirectory() and CFileFind::
GetLastWriteTime(…). When calling the third function to obtain the update time of a file, we get a CTime
type variable. To store the time in a CString type variable in ASCII format, we need to call function
CTime::Format(…). The following portion of function CExplorerView::ChangeDir() shows how the string
array is created:
……
……
}
if(!ff.IsDirectory())
{
szText.Empty();
szText.Format("%lu Bytes", ff.GetLength());
szArray.Add(szText);
szText.Empty();
szText="File";
}
else
{
szArray.Add("");
szText="Folder";
}
szArray.Add(szText);
ff.GetLastWriteTime(time);
szText.Empty();
szText=time.Format("%d/%m/%Y %I:%M%p");
szArray.Add(szText);
}
i++;
The text of sub-items is added by calling function CListCtrl::SetItemText(…). This can also be
implemented by stuffing LV_ITEM type object (specifying item and sub-item indices) and calling function
CListCtrl::SetItem(…). The following portion of function CExplorerView::ChangeDir() shows how
this is implemented in the sample:
……
for(i=0; i