Jerry,
To tell you the truth, I've not done much with AcitveX controls. However, if
you have an application object, you can add a property called AutoYield to
it. The application object presumably has global scope so your forms should
see the new AutoYield property (if you don't have an application object, use
_VFP).
Again from Hacker's: (refer to the previous quote)
"In Visual FoxPro 5.0, Microsoft introduced the AutoYield property and
corresponding DoEvents command to solve this problem. When you have a form
with an ActiveX control, set the application's AutoYield property to .F. and
process the messages received by the control by issuing DoEvents when you're
ready to handle them."
>From this and the first quote, it looks like the ActiveX control will
interrupt whatever VFP code is executing when it decides to issue a message,
which of course could cause havoc with your code. AutoYield=.F. prevents
this by making the ActiveX control wait its turn. Then when you're ready to
process the message, issue a DODEVENTS.
At least that is what I infer from these two quotes.
Buy Hacker's it can be a life saver.
Jim
-----Original Message-----
From: profox-admin At leafe .DO.T com [mailto:profox-admin@leafe.com]On Behalf Of
Jerry Ott
Sent: Friday, February 28, 2003 4:53 PM
To: profox At leafe .DO.T com
Subject: Re: AutoYield Property
Jim
Thanks for the info. I'm still in the dark about the quote "set the
application's AutoYield to .F." A VFP form does not have an AutoYield
property. Is issuing _vfp.autoyield = .f. what they are referring to? If
so, where does this get inserted into the code?
TIA
Jerry,
>
> AutoYield is a property of _VFP added in 5.0. If you have a copy of
Hacker's
> (If you don't have a copy, BUY IT), there is a topic that explains how it
is
> used.
>
> Here is a quote from Hacker's:
> "The challenge of working with ActiveX controls is that, at times, they
seem
> to have a mind of their own. When AutoYield is left at the default
setting,
> clicking on an ActiveX control sends that click directly to the control
and
> it responds with its native behavior. If your code happens to be in the
> middle of doing something else, well, too bad"
>
> Jim
>
> -----Original Message-----
> From: profox-admin@leafe.com [mailto:profox-admin At leafe .DO.T com]On Behalf Of
> Jerry Ott
> Sent: Friday, February 28, 2003 4:09 PM
> To: profox@leafe.com
> Subject: AutoYield Property
>
>
> I have purchased the OCX TookBox from DBI to get at their HTML viewer.
>
> They tell me that AutoYield needs to be set to .f. in the load of each
form
> for the controls to work correctly. VFP forms do not have an AutoYield
> property. Setting _vfp.autoyield = .f. doesn't seem to help.
>
> Anybody got any ideas?
>
> TIA
>
> Jerry
©2003 Jim McKinniss |
