>Hi,
>
>While a form's timer is running a long process, is it possible to click on a checkbox in order to tell the timer to stop, or any workaround to produce an event and to be able to stop it ?
>
>I have been trying different things with doevents and autoyield property but the form does not respond to 'Clicks'
>
>Thanks
>Juan C. Jaramillo

I have used code similar to this.

*  Pause for key and mouse strokes
IF VERSION(5)<>700
	DOEVENTS
ENDIF

LOCAL lnKey, oCTRL
* if mouse clicked...
lnKey = INKEY(0.001,"MH")
IF lnKey=151

	oCTRL = SYS(1270)		&& Get object under mouse.
	DO CASE
		CASE TYPE("oCTRL")<>"O" OR ISNULL(oCTRL)
			* no object - ignore
		CASE LOWER(oCTRL.NAME)=="cmdstop"
			*  Stop button clicked during run
			oCTRL.CLICK()
	ENDCASE
ENDIF

It does require the it is in a processing loop. (DO WHILE...)