How to MSChart updates work in VB5?
in [Visual Basic]
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From: Steve on 18 Jun 2010 11:03 "Bob Butler" <noway(a)nospam.ever> wrote in message news:o2LSn.8252$1Q5.1793(a)newsfe08.iad... > > "Steve" <sredmyer(a)sndirect.com> wrote in message > news:hvfthk$2if$1(a)news.eternal-september.org... >> >> <tadamsmar(a)yahoo.com> wrote in message >> news:56fc3fe5-6f45-4bd8-8e0d-18c92bcece7e(a)z8g2000yqz.googlegroups.com... >>> On Jun 17, 4:36 pm, ralph <nt_consultin...(a)yahoo.net> wrote: >>>> On Thu, 17 Jun 2010 12:57:00 -0700 (PDT), "tadams...(a)yahoo.com" >>>> >>>> <tadams...(a)yahoo.com> wrote: >>>> >The subroutine aquired more data and tries to update the chart, but I >>>> >did not get a redisplay of the chart till the subroutine ended. >>>> >>>> How is this routine acquiring "more" data? >>>> >>>> >I can get visible updates using a timer. >>>> >>>> Then do the same. Break up the subroutine so that is a series of >>>> "Events". >>> >>> How do you kick off an event from a subroutine? What is the call for >>> that? Thanks! >>> >>> I have a subroutine Command1_Click. I can kick it off with a command >>> button or via a timer, but how do I put it on the event queue using >>> calls in a subroutine? >> >> All one must do to "fire" an event handler is to call the event handlers >> routine. >> ie. >> Call Command1_Click() >> >> Simple as that > > A better option, IMO, would be to use > Command1.Value = True > > Agreed.
From: tadamsmar on 18 Jun 2010 11:59 On Jun 18, 11:03 am, "Steve" <sredm...(a)sndirect.com> wrote: > "Bob Butler" <no...(a)nospam.ever> wrote in message > > news:o2LSn.8252$1Q5.1793(a)newsfe08.iad... > > > > > > > > > "Steve" <sredm...(a)sndirect.com> wrote in message > >news:hvfthk$2if$1(a)news.eternal-september.org... > > >> <tadams...(a)yahoo.com> wrote in message > >>news:56fc3fe5-6f45-4bd8-8e0d-18c92bcece7e(a)z8g2000yqz.googlegroups.com.... > >>> On Jun 17, 4:36 pm, ralph <nt_consultin...(a)yahoo.net> wrote: > >>>> On Thu, 17 Jun 2010 12:57:00 -0700 (PDT), "tadams...(a)yahoo.com" > > >>>> <tadams...(a)yahoo.com> wrote: > >>>> >The subroutine aquired more data and tries to update the chart, but I > >>>> >did not get a redisplay of the chart till the subroutine ended. > > >>>> How is this routine acquiring "more" data? > > >>>> >I can get visible updates using a timer. > > >>>> Then do the same. Break up the subroutine so that is a series of > >>>> "Events". > > >>> How do you kick off an event from a subroutine? What is the call for > >>> that? Thanks! > > >>> I have a subroutine Command1_Click. I can kick it off with a command > >>> button or via a timer, but how do I put it on the event queue using > >>> calls in a subroutine? > > >> All one must do to "fire" an event handler is to call the event handlers > >> routine. > >> ie. > >> Call Command1_Click() > > >> Simple as that > > > A better option, IMO, would be to use > > Command1.Value = True > > Agreed.- Hide quoted text - > > - Show quoted text - Thanks, that makes it easy to play around with my existing code. I have a prototype that updates a chart when I hit one of 3 command buttons (an array of 3 buttons) The handler acquires 1 second of data from a A/D converter and displays it on a plot. Now I think I have a different problem. I don't think an MSChart updates if there are more events on the queue. If I put this in Form_Load: Command1(0).Value = True DoEvents Command1(1).Value = True I don't get one plot followed by another as I would expect. Instead, I just get the last plot from Command1(1). Also, if I just hit two of the buttons one after the others quickly so that the plot does not get a chance to update, then I only get a display of the last plot. I can't find a way to get MSChart to update on the display before going to the next event.
From: tadamsmar on 21 Jun 2010 08:34
On Jun 18, 11:59 am, "tadams...(a)yahoo.com" <tadams...(a)yahoo.com> wrote: > On Jun 18, 11:03 am, "Steve" <sredm...(a)sndirect.com> wrote: > > > > > > > "Bob Butler" <no...(a)nospam.ever> wrote in message > > >news:o2LSn.8252$1Q5.1793(a)newsfe08.iad... > > > > "Steve" <sredm...(a)sndirect.com> wrote in message > > >news:hvfthk$2if$1(a)news.eternal-september.org... > > > >> <tadams...(a)yahoo.com> wrote in message > > >>news:56fc3fe5-6f45-4bd8-8e0d-18c92bcece7e(a)z8g2000yqz.googlegroups.com.... > > >>> On Jun 17, 4:36 pm, ralph <nt_consultin...(a)yahoo.net> wrote: > > >>>> On Thu, 17 Jun 2010 12:57:00 -0700 (PDT), "tadams...(a)yahoo.com" > > > >>>> <tadams...(a)yahoo.com> wrote: > > >>>> >The subroutine aquired more data and tries to update the chart, but I > > >>>> >did not get a redisplay of the chart till the subroutine ended. > > > >>>> How is this routine acquiring "more" data? > > > >>>> >I can get visible updates using a timer. > > > >>>> Then do the same. Break up the subroutine so that is a series of > > >>>> "Events". > > > >>> How do you kick off an event from a subroutine? What is the call for > > >>> that? Thanks! > > > >>> I have a subroutine Command1_Click. I can kick it off with a command > > >>> button or via a timer, but how do I put it on the event queue using > > >>> calls in a subroutine? > > > >> All one must do to "fire" an event handler is to call the event handlers > > >> routine. > > >> ie. > > >> Call Command1_Click() > > > >> Simple as that > > > > A better option, IMO, would be to use > > > Command1.Value = True > > > Agreed.- Hide quoted text - > > > - Show quoted text - > > Thanks, that makes it easy to play around with my existing > code. I have a prototype that updates a chart when > I hit one of 3 command buttons (an array of 3 buttons) > > The handler acquires 1 second of data from a A/D converter and > displays it on a plot. > > Now I think I have a different problem. > > I don't think an MSChart updates if there are more events on the > queue. > > If I put this in Form_Load: > > Command1(0).Value = True > DoEvents > Command1(1).Value = True > > I don't get one plot followed by another as I would expect. > Instead, I just get the last plot from Command1(1). > > Also, if I just hit two of the buttons one after the others quickly so > that the plot does not get a chance to update, then I only get a > display of the last plot. > > I can't find a way to get MSChart to update on the display before > going to the next event.- Hide quoted text - > > - Show quoted text - If I update with a timer, the update always works. The subroutine acquires data from 1 second from an A/D and then plots it with MSChart If I run the subroutine from command button handlers, then the I only get one update of the plot if I hit the buttons repeatedly at a high rate exceeding 1 per second. But I can turn on a timer for one iteration (set interation to a non-zero value and then set it to zero when the timer runs) and call the subroutine from the timer and I alway get a new plot. |