How do I know System.Windows.Forms.TextBox in System.Windows.Forms lose
Active?

I mean When a textbox get focus, then user click on another form/application
to make another form/application activate and make this form/application
deactivate, how to I know that in textbox? What event/message was sent to
textbox?

---Frank

Hi Frank,

The TextBox will never know as strictly speaking it's none of its business. The TextBox will only be notified if it loses focus to another control in the same form. You can use the Control.Leave event for this.

If your Form loses focus (ie clicking on another application) you can detect this in the Form.Deactivated event. You can then do something with the TextBox if needed.


--
Happy coding!
Morten Wennevik [C# MVP]

"Morten Wennevik" <(E-Mail Removed)>
???????p.sqcluwa5klbvpo@stone...
> Hi Frank,
>
> The TextBox will never know as strictly speaking it's none of its
> business. The TextBox will only be notified if it loses focus to another
> control in the same form. You can use the Control.Leave event for this.
>
> If your Form loses focus (ie clicking on another application) you can
> detect this in the Form.Deactivated event. You can then do something with
> the TextBox if needed.
>

OK, it's a way.

However, for an IE Hosted usercontrol. How can I known IE loses focus?

---Frank

I'm afraid I don't know. You may want to start a new thread with this question.

On Fri, 06 May 2005 12:33:51 +0200, Frank Lee <(E-Mail Removed)> wrote:

>
> "Morten Wennevik" <(E-Mail Removed)>
> ???????p.sqcluwa5klbvpo@stone...
>> Hi Frank,
>>
>> The TextBox will never know as strictly speaking it's none of its
>> business. The TextBox will only be notified if it loses focus to another
>> control in the same form. You can use the Control.Leave event for this.
>>
>> If your Form loses focus (ie clicking on another application) you can
>> detect this in the Form.Deactivated event. You can then do something with
>> the TextBox if needed.
>>
>
> OK, it's a way.
>
> However, for an IE Hosted usercontrol. How can I known IE loses focus?
>
> ---Frank
>
>
>



--
Happy coding!
Morten Wennevik [C# MVP]