comp.lang.idl-pvwave archive: archive » Re: widget

Home » Public Forums » archive » Re: widget_slider with odd integers

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: widget_slider with odd integers [message #31515]

Mon, 22 July 2002 12:41

Daniel Peduzzi
Messages: 29
Registered: June 1999

Junior Member

Thierry Savin wrote in message <3D3C4643.1080709@mit.edu>...
> Hi all,
>
>
> Does anyone know how I could create a slider widget that produces only
> odd integers ?
>

If you are on a UNIX system, you could create a slider like this:

sliderID = widget_slider(base, value=some_odd_value, /drag, event_pro='slider_event')

which will cause the "slider_event" callback to be invoked whenever the
slider is dragged.

Then in your callback:

pro slider_event, event
my_odd_value= event.value / 2 * 2 + 1
widget_control, event.id, set_value=my_odd_value
return
end

This doesn't work *quite* as nicely under Windows, since drag events are
not generated...but the value will still jump to an odd value when the
thumbnail is "dropped."

Note: be careful of the maximum slider value (for example, trying to set
a slider with a max of 100 to the value 101 will result in a value of 100.)

Dan

---------------------------------------
Daniel C. Peduzzi
peduzzi@attbi.com
---------------------------------------

Report message to a moderator

[Message index]

		Re: widget_slider with odd integers By: Daniel Peduzzi on Mon, 22 July 2002 12:41
		Re: widget_slider with odd integers By: JD Smith on Mon, 22 July 2002 11:46

Previous Topic:	Re: unwanted color bands in image display
Next Topic:	Linking multiple files...

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 15:38:23 PDT 2025

Total time taken to generate the page: 2.32294 seconds