窗体form失去焦点时(非激活状态)，发生什么事件 VCL组件开发及应用http://www.delphi2007.net/DelphiVCL/html/delphi_20061222233159173.html
由非激活状态变为激活状态是onActivate对吧
那么由激活状态变为非激活状态则对应哪个事件呢？onDeactivate么？我试了好像没用，鼠标点桌面或其他窗口，则form窗体变为非激活，应该触发啥事件？
FormDeactivate
FormDeactivate的触发时机：
when the form transitions from being the active form to another form in the same application becoming the active form.
特别说明：
If activation goes to another application, this event is not triggered.
处理办法：
To determine if another application has become active, Use the TApplication object's OnDeactivate event.
--------------------------------------------------
1、
procedure OnLoseFocus(Sender: TObject);
begin
Form1.Caption := FormatDateTime('HH:MMMM:SS', Now);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
......
@Application.OnDeactivate := @OnLoseFocus;
......
end;
2、可以捕获WM_KillFocus来处理失去焦点的事件
procedure TForm1.NewWindowProc(var Message: TMessage);
begin
if Message.Msg = WM_KillFocus then
Caption := FormatDateTime('HH:MMMM:SS', Now);
OldWindowProc(Message);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
......
OldWindowProc := sELF.WindowProc;
Self.WindowProc := NewWindowProc;
......
end;
不好意思，上次给的事件必须是在进程内部的
按照你的意思
你可以添加 ApplicationEvents 控件
然后在OnDeactivate 事件添加即可