treeview directory/file list

This is a discussion on treeview directory/file list within the Windows Programming forums, part of the Platform Specific Boards category; Essentially, I'm asking the same question that was asked way back in this thread. The one reply in that thread ...

  1. #1
    carry on JaWiB's Avatar
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    treeview directory/file list

    Essentially, I'm asking the same question that was asked way back in this thread. The one reply in that thread makes my eyes hurt, so I really hope someone gives me a better answer.

    Is there a quick way to create a tree view that lists the directories on a hard drive? Or do you have to do it all manually (ie, with FindFirstFile/FindNextFile)
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  2. #2
    erstwhile
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    You could alternatively use an invisible listbox to list files and directories(msdn example) and then just fill your listview from its contents. You'd still be left with a little fiddling to do, like converting to long path names and differentiating between files and directories from the listbox contents.
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  3. #3
    carry on JaWiB's Avatar
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    Well I started working on this and I decided to try to use FindFirst/NextFile. What I was thinking was I would fill the tree with all the folders in the C drive, then fill those folders with the ones inside them. Each time the user expanded a directory, I figure, I could fill those folders and so forth (if that makes any sense).

    The problem I'm having is handling the TVM_ITEMEXPANDING notification. I tried this:
    Code:
    case WM_NOTIFY: //handle treeview messages
        {
          if(wParam==ID_BROWSE_TREE)
          {
            LPNMHDR nm = (LPNMHDR)lParam;
            if  (nm->code==TVN_ITEMEXPANDING)
            {
              LPNMTREEVIEW nmtv = (LPNMTREEVIEW)lParam;
              MessageBox(NULL,nmtv->itemNew.pszText,"Test",MB_OK);
                    
            }
          }
        }
    But there's no text in the message box
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  4. #4
    carry on JaWiB's Avatar
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    So it seems it's more complicated than just doing that I used TreeView_GetItem to get it to work:
    Code:
    TVITEM parent; 
              char buf[MAX_PATH];
              parent.hItem = nmtv->itemNew.hItem;
              parent.mask = TVIF_TEXT;
              parent.pszText = buf;
              parent.cchTextMax = MAX_PATH;
              TreeView_GetItem(hTree,&parent);
    My directory tree view now works great, except I need to handle folders collapsing and delete sub-folders (or I get duplicates). Hopefully I wont have any serious issues when I do that
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  5. #5
    Yes, my avatar is stolen anonytmouse's Avatar
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    Quote Originally Posted by WiBJa
    But there's no text in the message box
    Quote Originally Posted by MSDN TVN_ITEMEXPANDING
    The itemNew member is a TVITEM structure that contains valid information about the parent item in the hItem, state, and lParam members.
    If you need the text, you will have to call TreeView_GetItem with the appropriate mask.

    There is a Win32 Shell Tree-View at CodeProject.

  6. #6
    carry on JaWiB's Avatar
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    Whoa you posted almost exactly as I did...weird
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  7. #7
    Yes, my avatar is stolen anonytmouse's Avatar
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    What are the chances of that?

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