void CPage6::OnItemexpanding(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);
HTREEITEM hItem = pNMTreeView->itemNew.hItem;
CString strPathName = GetPathFromItem (hItem);
if (!IsMediaValid (strPathName))
{
HTREEITEM hRoot = GetDriveNode (hItem);
m_FileTree.Expand (hRoot, TVE_COLLAPSE);
DeleteChildren (hRoot);
AddDummyNode (hRoot);
*pResult = TRUE;
return;
}
if (!IsPathValid (strPathName))
{
if(strPathName != MYCOMPUTER && strPathName != "")
{
m_FileTree.DeleteItem (hItem);
*pResult = TRUE;
return;
}
}
CWaitCursor wait;
if (pNMTreeView->action == TVE_EXPAND)
{
if(strPathName != MYCOMPUTER)
{
DeleteChildren (hItem);
if (!AddDirectoryNodes (hItem, strPathName))
*pResult = TRUE;
}
}
else {
if(strPathName != MYCOMPUTER)
{
DeleteChildren (hItem);
if (IsDriveNode (hItem))
AddDummyNode (hItem);
else
SetButtonState (hItem, strPathName);
}
}
m_LocalPath = strPathName;
*pResult = 0;
}
void FolderTree::DoExpand(HTREEITEM hItem)
{
FolderTreeItemInfo* pItem = (FolderTreeItemInfo*) GetItemData(hItem);
//Reset the drive node if the drive is empty or the media has changed
if (IsMediaValid(pItem->m_sFQPath))
{
//Delete the item if the path is no longer valid
if (IsFolder(pItem->m_sFQPath))
{
//Add the new items to the tree if it does not have any child items
//already
if (!GetChildItem(hItem))
DisplayPath(pItem->m_sFQPath, hItem);
}
else if (hItem == m_hMyComputerRoot)
{
//Display an hour glass as this may take some time
//CWaitCursor wait;
//Enumerate the local drive letters
auto shared = sp->getViewItems(sp->curProfile);
DisplayDrives(m_hMyComputerRoot, FALSE, shared);
}
else if ((hItem == m_hNetworkRoot) || (pItem->m_pNetResource))
{
//Display an hour glass as this may take some time
//CWaitCursor wait;
//Enumerate the network resources
EnumNetwork(hItem);
}
else
{
//Before we delete it see if we are the only child item
HTREEITEM hParent = GetParentItem(hItem);
//Delete the item
DeleteItem(hItem);
//Remove all the child items from the parent
SetHasPlusButton(hParent, false);
}
}
else
{
//Display an hour glass as this may take some time
//CWaitCursor wait;
//Collapse the drive node and remove all the child items from it
Expand(hItem, TVE_COLLAPSE);
DeleteChildren(hItem, true);
}
}
