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Refreshing toolbars
Message
De
11/07/2003 16:09:49
 
 
À
11/07/2003 11:35:29
Information générale
Forum:
Visual FoxPro
Catégorie:
Gestionnaire d'écran & Écrans
Divers
Thread ID:
00808690
Message ID:
00809399
Vues:
30
Thanks Glenn, I was afraid the the only way to properly refresh cut-copy-paste was through a timer. I was trying to avoid it because I don't like them a lot as you have to be very careful with the code inside (it keeps executing whatever the user is doing, which is a source of conflicts).

Regards,
Javier.

>Hello Javier,
>
>Well, the issue of updating the Cut/Copy/Paste toolbar is not pretty, What you need to do can be accomplished in the toolbar button class and a timer. At every timer interval call a method in the button to refresh itself. For instance in the Cut/Copy buttons the refresh method may look something like this:
>
>tbarButton::Refresh
>if type('_screen.activeform.name') = 'C' and ;
>  inlist(_screen.activeform.activecontrol.baseclass,'Textbox','Editbox')
>  this.enabled = .t.
>else
>  this.enabled = .f.
>endif
>
>
>The timer would fire every .5 seconds (500ms) and it's timer event may look like this:
>
>tbTimer::Timer
>local i
>with this.parent
>for i = 1 to this.parent.controlcount
>  if .controls(i).baseclass = 'Button'
>    .controls(i).refresh()
>  endif
>endfor
>
>
>These are just examples and not production code. You can develop your own techniques and methods from these concepts.
>
>Glenn
>
>>>Hi,
>>>
>>>>>
>>>I just wanted to know what is the recommended way to refresh a toolbar:
>>>- Timer
>>>- Inserting code in thisForm.init() and thisForm.destroy() methods.
>>>>>
>>>
>>>It depends...
>>>If the same toolbar is servicing multiple forms then I think that probably the best place is in the Form.Activate/Deactivate events.
>>>
>>>Regards,
>>>Viv
>>
>>You are right, activate and deactivate methods make more sense. The toolbar is servicing the whole application, so it has buttons related to forms and others that relate to miscelaneous things (like save as, send to ..., cut-copy-paste, ...), and these buttons are the ones who change more from enabled to disabled (think of the cut-copy-paste).
>>
>>Thanks,
>>Javier.
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