procedure Collapse(Recurse: Boolean);
void __fastcall Collapse(bool Recurse);
Collapses a node.
When a node is collapsed, all of its subnodes are hidden. The plus button may be displayed, depending on whether the tree view's ShowButtons property is set. If Recurse is true, then all subnodes will be collapsed as well. When the node is next expanded the children will still be collapsed. If Recurse is false, the child nodes won't be collapsed and the next time the node is expanded, the children will be in the same state as when Collapse was called.