请问怎么判断鼠标已经移出了treeview的范围？？？

Question

谢谢

Answer 1

onmousemove 
hittest
setcapture

Answer 2

zhuan:先覆盖一个消息方法procedure CMMouseLeave(var Msg: Tmessage);message CM_MouseLeave;
然后在消息方法里这么写：procedure TForm1.CMMouseLeave(var Msg: TMessage);
var Obj: TObject;
begin
  Obj := TObject(Msg.LParam);
  if Assigned(Obj) and (Obj is TChart) then
    //do something
  else
    inherited;
end;

Answer 3

SetCaptureControl( TreeView1 );
    //判断是不是在这个范围内，自己改一下
    if not InRange(x, TreeView1.Left, TreeView1.Left + TreeView1.Width ) then
    begin
        SetCaptureControl( nil );
    end;    if( GetCaptureControl <> nil ) then
        Debugoutput( GetCaptureControl.Name );