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Re: cannt disable widget timer event? [message #47213 is a reply to message #47212]

Mon, 30 January 2006 21:32

Weihua FANG
Messages: 26
Registered: January 2006

Junior Member

Hi, David,

here is a examle of my code. I cancel timer event by setting a negative
value. How will you do that?

PRO timer_example_event, ev

WIDGET_CONTROL, ev.ID, GET_UVALUE=uval
IF (TAG_NAMES(ev, /STRUCTURE_NAME) EQ 'WIDGET_TIMER') THEN BEGIN
PRINT, 'Timer Fired'
WIDGET_CONTROL, ev.TOP, TIMER=1
ENDIF

CASE uval OF
'timer' : BEGIN
WIDGET_CONTROL, ev.TOP, Timer = 1
END
'otherjobs' : BEGIN
print, 'other jobs here'
END
'stoptimer' : BEGIN
; set a negative value to slope timer
WIDGET_CONTROL, ev.TOP, TIMER=-1
END
ELSE:
ENDCASE

END

PRO timer_example

base = WIDGET_BASE(/COLUMN, UVALUE='base')
b1 = WIDGET_BUTTON(base, VALUE='Fire event', UVALUE='timer')
b2 = WIDGET_BUTTON(base, VALUE='Other job', UVALUE='otherjobs')
b3 = WIDGET_BUTTON(base, VALUE='Stop Timer', UVALUE='stoptimer')
WIDGET_CONTROL, base, /REALIZE
XMANAGER, 'timer_example', base, /NO_BLOCK

END

David Fanning 写道：

> Weihua FANG writes:
>
>> just found that setting timer to a negative value would disable timer
>> event. :-)
>
> Uh, huh. And how is that different from NOT setting
> the next timer event?
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: cannt disable widget timer event? By: David Fanning on Mon, 30 January 2006 21:48
		Re: cannt disable widget timer event? By: Weihua FANG on Mon, 30 January 2006 21:32
		Re: cannt disable widget timer event? By: David Fanning on Mon, 30 January 2006 20:03
		Re: cannt disable widget timer event? By: Weihua FANG on Mon, 30 January 2006 19:10
		Re: cannt disable widget timer event? By: David Fanning on Mon, 30 January 2006 18:53
		Re: cannt disable widget timer event? By: Weihua FANG on Mon, 30 January 2006 18:30
		Re: cannt disable widget timer event? By: David Fanning on Mon, 30 January 2006 05:21
		Re: cannt disable widget timer event? By: Weihua FANG on Tue, 07 February 2006 02:43

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