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| Re: 'remote control' for widgets? [message #33226 is a reply to message #33225] |
Mon, 16 December 2002 07:35   |
![s[1] is currently offline](theme/default/images/xoffline.png.pagespeed.ic.XRkd1fkXye.png "s[1] is currently offline")
s[1]
Messages: 21
Registered: December 2002
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Junior Member |
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Hi Dave & David,
thanks for the tip - I got it working now, the solution is:
a) "WIDGET_CONTROL, myWidget, SET_VALUE=myValue" to set the
slider/button/whatever
b) "WIDGET_CONTROL, myWidget, SEND_EVENT={ID:myWidget, TOP:myBase,
HANDLER:0L,VALUE:myValue}" to create the event so that all the stuff in
the event handler gets called.
That's quite cumbersome, but it works, although I would prefer a solution
like
WIDGET_CONTROL, myWidget, SET_VALUE=myValue, /CREATE_EVENT
that does the event creation automagically.
Btw, neither the "Using IDL" nor the Building IDL Apps"
manual for IDL 5.4 does mention the word "SENT_EVENT"...
Best regards,
Sebastian
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| Re: 'remote control' for widgets? [message #33230 is a reply to message #33226] |
Mon, 16 December 2002 05:10 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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s@visita2.die.upm.es (s@visita2.die.upm.es) writes:
> I try to progammatically set values of widgets like sliders or checkboxes.
> When I use "WIDGET_CONTROL,myWidget,SET_VALUE=myValue", only the widget
> gets changed, but the appropriate event is not generated.
>
> What I am looking for is a technique taht allows me to change the value of
> a widget _and_ generates the event that would have been generated if I
> had changed the widget using the mouse or keyboard.
Widget_Control, myWidget, Send_Event=thisEventStruct
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: 'remote control' for widgets? [message #33231 is a reply to message #33230] |
Mon, 16 December 2002 05:03 |
David Burridge
Messages: 33
Registered: January 1998
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Member |
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Hi Sebastian,
Have you considered using the "Send_Event" keyword to Widget_Control? You'll
have to build the event structure, but it would do exactly what you want.
For example, assuming your event below is a button (simplest example:-) you
could:
Widget_Control, myWidget, Set_Value={ID:myWidget, TOP:myTLB, HANDLER:0L,
SELECT:1L}
If you don;t know the ID of the top-level base (myTLB), you *could* use
Widget_Info to find it I guess, but the best would be to pass it through.
Does this help?
Dave
--
David Burridge
Burridge Computing, 18 The Green South
Warborough, Oxon, OX10 7DN
England
Tel: +44 (0) 1865 858279, Email: davidb@burridgecomputing.co.uk
<s@visita2.die.upm.es> wrote in message
news:Pine.LNX.4.44.0212161243430.3160-100000@visita2.die.upm .es...
> Hi all,
>
> I try to progammatically set values of widgets like sliders or checkboxes.
> When I use "WIDGET_CONTROL,myWidget,SET_VALUE=myValue", only the widget
> gets changed, but the appropriate event is not generated.
>
> What I am looking for is a technique taht allows me to change the value of
> a widget _and_ generates the event that would have been generated if I
> had changed the widget using the mouse or keyboard.
>
> Thanks for all tips,
>
> Sebastian
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.404 / Virus Database: 228 - Release Date: 15/10/2002
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| Re: 'remote control' for widgets? [message #33402 is a reply to message #33230] |
Fri, 20 December 2002 13:10 |
Stein Vidar Hagfors H[2]
Messages: 28
Registered: October 2002
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Junior Member |
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David Fanning <david@dfanning.com> writes:
> s@visita2.die.upm.es (s@visita2.die.upm.es) writes:
>
>> I try to progammatically set values of widgets like sliders or checkboxes.
>> When I use "WIDGET_CONTROL,myWidget,SET_VALUE=myValue", only the widget
>> gets changed, but the appropriate event is not generated.
>>
>> What I am looking for is a technique taht allows me to change the value of
>> a widget _and_ generates the event that would have been generated if I
>> had changed the widget using the mouse or keyboard.
>
> Widget_Control, myWidget, Send_Event=thisEventStruct
Sigh... This reminds me of a program I once wrote (xrecorder) that would
"infest" *any* widget program by installing its own routines as widget event
handlers, to record the events... You could in fact record a complete
demonstration session for any widget program, store it, and replay it (with
the correct functionality - even moving the cursor over the screen to the
right buttons etc to aid the eye, and with the recorded [editable] timing
between each event, you could even edit the script to insert comments that
would pop up on screen). The nice thing was that *nothing* had to be changed
in the original programs. The only restriction was that the *structure* of the
widget program could not (of course) be changed between recording and
replaying.
Of course, the whole darn thing broke when IDL introduced a new version with
their "real modal widgets"). Ah, those were the days, when xmanager,/modal
worked. At least *one* person got to use it for a real-world application
(demonstrating the functionality of a relatively large software suite) before
it got obsoleted, and it was a lot of fun to make!
--
------------------------------------------------------------ --------------
Stein Vidar Hagfors Haugan
ESA SOHO SOC/European Space Agency Science Operations Coordinator for SOHO
NASA Goddard Space Flight Center, Tel.: 1-301-286-9028
Mail Code 682.3, Bld. 26, Room G-1, Cell: 1-240-354-6066
Greenbelt, Maryland 20771, USA. Fax: 1-301-286-0264
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