| Re: sending events [message #25027] |
Tue, 15 May 2001 21:54 |
![marc schellens[1] is currently offline](theme/default/images/xoffline.png.pagespeed.ic.XRkd1fkXye.png "marc schellens[1] is currently offline")
marc schellens[1]
Messages: 183
Registered: January 2000
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Senior Member |
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Ivan Zimine wrote:
>
> Marc Schellens wrote:
>>
>> Hello everybody,
>>
>> talking to a colleague, I came to the
>> question, when one would need widget_control,ID,SENT_EVENT=...
>>
>> The only advantage over calling the eventhandler directly
>> I can think of, is that you don't need eventhandlers name
>> (Ok, it might indeed be a big andvantage, if you program
>> in a team).
>> Do I miss something?
>> Is there another reason/situation were sending events is
>> really needed?
>
> talking to another widget program.
Ok, I see the point here, as you don't need the eventhandler
names.
Thanks to both of you!
:- marc
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| Re: sending events [message #25028 is a reply to message #25027] |
Tue, 15 May 2001 21:48  |
marc schellens[1]
Messages: 183
Registered: January 2000
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Senior Member |
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"Dominic R. Scales" wrote:
>
> Hi marc,
> There are many situations where you need to generate and send
> an event. Here's an example:
>
> I sometimes send events to the eventhandler, when for instance,
> a choice made in one menu influences an other. Say, our user can
> choose a certain set of properties from a non-exclusuive check
> button list (nex_list). A separate list of exclusive check buttons
> contains operations to be performed on the data (ex_list).
>
> Some combinations in nex_list force the choice of a specific
> operation from ex_list, while others can be used with any operation.
>
> When I'm finished doing whatever a click in nex_list requires I
> can check the combination of properties set. If it requires a
> specific setting in ex_list I send an event and choose the appropriate
> operation in ex_list. My user doesn't have to remember checking ex_list
> if there is only one possibility left.
>
> Cheers,
> Dominic
>
> PS Hm, re-reading it, I don't know if it is clear enough. Oh, well...
Ok, but in this case you could also call the eventhandler directly...
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| Re: sending events [message #25040 is a reply to message #25028] |
Tue, 15 May 2001 00:18 |
Ivan Zimine
Messages: 40
Registered: February 1999
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Member |
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Marc Schellens wrote:
>
> Hello everybody,
>
> talking to a colleague, I came to the
> question, when one would need widget_control,ID,SENT_EVENT=...
>
> The only advantage over calling the eventhandler directly
> I can think of, is that you don't need eventhandlers name
> (Ok, it might indeed be a big andvantage, if you program
> in a team).
> Do I miss something?
> Is there another reason/situation were sending events is
> really needed?
talking to another widget program.
have a look at http://www.dfanning.com/programs/xcolors.pro
--
Ivan Zimine | ivan.zimine@physics.unige.ch
Dpt. of Radiology | (+41 22) 372 70 70
Geneva University Hospitals |
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| Re: sending events [message #25041 is a reply to message #25040] |
Mon, 14 May 2001 23:44 |
Dominic R. Scales
Messages: 12
Registered: April 2001
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Junior Member |
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Hi marc,
There are many situations where you need to generate and send
an event. Here's an example:
I sometimes send events to the eventhandler, when for instance,
a choice made in one menu influences an other. Say, our user can
choose a certain set of properties from a non-exclusuive check
button list (nex_list). A separate list of exclusive check buttons
contains operations to be performed on the data (ex_list).
Some combinations in nex_list force the choice of a specific
operation from ex_list, while others can be used with any operation.
When I'm finished doing whatever a click in nex_list requires I
can check the combination of properties set. If it requires a
specific setting in ex_list I send an event and choose the appropriate
operation in ex_list. My user doesn't have to remember checking ex_list
if there is only one possibility left.
Cheers,
Dominic
PS Hm, re-reading it, I don't know if it is clear enough. Oh, well...
--
Dipl. Phys. Dominic R. Scales | Aero-Sensing Radarsysteme GmbH
Tel: +49 (0)8153-90 88 90 | c/o DLR Oberpfaffenhofen
Fax: +49 (0)8153-908 700 | 82234 Wessling, Germany
WWW: aerosensing.de | email: Dominic.Scales@aerosensing.de
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