SetTimer vs. Timer Control
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From: Desi on 6 Feb 2006 17:33 Can anyone share some insight on the use of SetTimer vs. Timer Control? My component has a lengthy initialization process. I want the client's object creation to return asap, and I will later notify the client when data is ready via asynchronous call-back. Using Sub Main(), would it not be just as easy to load a Form containing ONLY a timer control in comparison to creating a code-only timer? I realize the implications of a loaded Form vis a vis keeping a component loaded, but I was going to do that by design anyway for that very purpose. Thoughts appreciated. Desi
From: Tom Esh on 6 Feb 2006 21:55 On Mon, 6 Feb 2006 16:33:07 -0600, "Desi" <nospam(a)thanks.net> wrote: >Can anyone share some insight on the use of SetTimer vs. Timer Control? >My component has a lengthy initialization process. >I want the client's object creation to return asap, and I will later notify >the client when data is ready >via asynchronous call-back. Using Sub Main(), would it not be just as easy >to load a Form containing ONLY a timer control >in comparison to creating a code-only timer? I realize the implications of a >loaded Form vis a vis keeping a component loaded, >but I was going to do that by design anyway for that very purpose. > The only difference would be resource usage for the Timer control - a little for the ocx wrapper, more for the requisite form to host it. I probably wouldn't add a form just to host a Timer, but folks do it all the time. Really wouldn't be significant unless you start piling up instances. -Tom MVP - Visual Basic (please post replies to the newsgroup)
From: Michael D. Ober on 6 Feb 2006 22:04 The timer control is limited to 65 seconds. If you need longer times than that, you need to use the API SetTimer function. Mike Ober. "Tom Esh" <tjeshGibberish(a)suscom.net> wrote in message news:9v1gu11hjslv1c4b401pvhfp38knl3j7pf(a)4ax.com... > On Mon, 6 Feb 2006 16:33:07 -0600, "Desi" <nospam(a)thanks.net> wrote: > > >Can anyone share some insight on the use of SetTimer vs. Timer Control? > >My component has a lengthy initialization process. > >I want the client's object creation to return asap, and I will later notify > >the client when data is ready > >via asynchronous call-back. Using Sub Main(), would it not be just as easy > >to load a Form containing ONLY a timer control > >in comparison to creating a code-only timer? I realize the implications of a > >loaded Form vis a vis keeping a component loaded, > >but I was going to do that by design anyway for that very purpose. > > > > The only difference would be resource usage for the Timer control - a > little for the ocx wrapper, more for the requisite form to host it. I > probably wouldn't add a form just to host a Timer, but folks do it all > the time. Really wouldn't be significant unless you start piling up > instances. > > > -Tom > MVP - Visual Basic > (please post replies to the newsgroup) >
From: Tom Esh on 7 Feb 2006 02:04 On Tue, 07 Feb 2006 03:04:24 GMT, "Michael D. Ober" <obermd.@.alum.mit.edu.nospam> wrote: >The timer control is limited to 65 seconds. If you need longer times than >that, you need to use the API SetTimer function. You don't need a longer period / interval for longer times. Instead use the timer to periodically measure the ~real~ elapsed time. -Tom MVP - Visual Basic (please post replies to the newsgroup)
From: Harvey Triana on 7 Feb 2006 10:25
> The timer control is limited to 65 seconds. If you need longer times than > that, you need to use the API SetTimer function. Not always. The next sample is a timer over ten minutes... or you like Option Explicit Private t As Date Private Const DELAY As Double = 10 '//minutes Private Sub Form_Load() t = Now Timer1.Interval = 1000 Timer1.Enabled = True End Sub Private Sub Timer1_Timer() If Abs(DateDiff("s", t, Now)) >= DELAY Then Timer1.Enabled = False MsgBox "Do Something" End If End Sub <Harvey Triana /> Drilling View? Developer (52 oil wells in 2005) --------------------- Of course: http://classicvb.org/petition/index.asp ----- Original Message ----- From: "Michael D. Ober" <obermd.@.alum.mit.edu.nospam> Newsgroups: microsoft.public.vb.general.discussion Sent: Monday, February 06, 2006 10:04 PM Subject: Re: SetTimer vs. Timer Control |