Collapses the specified item.
TreeView controls
treeviewname.CollapseItem ( itemhandle )
Argument |
Description |
|---|---|
treeviewname |
The TreeView control in which you want to collapse an item |
itemhandle |
The handle of the item you want to collapse |
Integer. Returns 1 if it succeeds and -1 if an error occurs.
If there is only one level-one entry, you can use the RootTreeItem handle as the argument to collapse the tree so that only the top-level node is displayed. However, CollapseItem collapses only the current item, so that if the children of the top-level item were expanded when the tree was collapsed, they will still be expanded when the top-level item is expanded.
If there is more than one level-one entry, using the RootTreeItem handle as the argument collapses only the first level-one entry.
This example collapses an item in a TreeView control:
long ll_tvi
ll_tvi = tv_list.FindItem(currenttreeitem!, 0)
tv_list.CollapseItem(ll_tvi)
This example collapses the top-level item in a TreeView control that has only one level-one entry:
long ll_tvi
ll_tvi = tv_list.FindItem(roottreeitem!, 0)
tv_list.CollapseItem(ll_tvi)
