| Re: TVRD() and WRITE_GIF [message #18639] |
Wed, 26 January 2000 00:00 |
Ian Dean
Messages: 26
Registered: January 2000
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Junior Member |
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Yes, I agree with Mark, it would be nice if IDL could grab the whole
screen (or top-level widget and all sons/daughters).
It's OK to use a screen grabber, but when using multiple platforms, this
is not that easy, especially when the users may not be computer literate,
but can manage to select a button marked "Print Screen".
Regards,
Ian
Mark Buckley wrote:
> David Fanning <davidf@dfanning.com> wrote in message
> news:MPG.12f77018aba984c39899f9@news.frii.com...
>
>> All you are going to be able to get from within IDL is
>> the contents of a graphics or draw widget window. Usually
>> (thank Goodness!) this is what you want in your GIF file.
>>
>> When it is not (for example, when you want to see the
>> whole graphical user interface of a program), you will
>> have to get some kind of screen capture tool.
>
> Yup, that was my intention. We already have a grabber that we use
> (xv under Solaris) for some screenshots, I was just thinking that
> it would be nice to be able to do it from a button on the GUI, rather
> than firing up a seperate application.
>
> Ok, thanks for your help!
>
> cheers,
>
> Mark
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| Re: TVRD() and WRITE_GIF [message #18641 is a reply to message #18639] |
Tue, 25 January 2000 00:00  |
Ivan Zimine
Messages: 40
Registered: February 1999
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Member |
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Hi,
widget_control, drawID, get_value=win_id
;get_value returns window id (in direct graphics)!
wset, win_id ; make this window current
good luck
Ivan
Mark Buckley wrote:
>
> Hi,
>
> Hopefully this won't turn out to be a dozy question - I'm a bit out of
> practise on IDL at the moment.
>
> Anyway, what I'd like to do is grab a window image, so that I can write it
> out as a GIF.
>
> The difficulty I'm having is that as I'm using widgets, I'm not sure how to
> get the actual window ID for the
> the call to TVRD(), all I seem to get back is the draw widget contents.
>
> e.g.
>
> pro get_window
>
> base = widget_base(/column)
> junk = widget_label(base,value = "Hi")
> draw = widget_draw(base,xsize=200,ysize=300)
> .
> .
> widget_control,base,/realize
> widget_control,draw,get_value = draw_id
>
> res = tvrd()
> help,res
> end
>
> This just returns me an array of the draw widget (200x300), not the whole
> window.
>
> cheers,
>
> Mark
--
Ivan Zimine
Dpt. of Radiology (MRI), Geneva University Hospitals
email: ivan.zimine@physics.unige.ch
tel. : (+41 22) 372 70 70
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| Re: TVRD() and WRITE_GIF [message #18644 is a reply to message #18641] |
Tue, 25 January 2000 00:00 |
Mark Buckley
Messages: 7
Registered: December 1998
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Junior Member |
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David Fanning <davidf@dfanning.com> wrote in message
news:MPG.12f77018aba984c39899f9@news.frii.com...
> All you are going to be able to get from within IDL is
> the contents of a graphics or draw widget window. Usually
> (thank Goodness!) this is what you want in your GIF file.
>
> When it is not (for example, when you want to see the
> whole graphical user interface of a program), you will
> have to get some kind of screen capture tool.
Yup, that was my intention. We already have a grabber that we use
(xv under Solaris) for some screenshots, I was just thinking that
it would be nice to be able to do it from a button on the GUI, rather
than firing up a seperate application.
Ok, thanks for your help!
cheers,
Mark
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| Re: TVRD() and WRITE_GIF [message #18645 is a reply to message #18641] |
Tue, 25 January 2000 00:00 |
Lazzar
Messages: 9
Registered: February 1999
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Junior Member |
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If your working on a MS Windows platform an easy way to do a screen capture of
the current window is ALT-print screen. This places a copy of the current
window to the clipboard then you can just paste it into paint and save it.
Brian
Mark Buckley wrote:
> Hi,
>
> Hopefully this won't turn out to be a dozy question - I'm a bit out of
> practise on IDL at the moment.
>
> Anyway, what I'd like to do is grab a window image, so that I can write it
> out as a GIF.
>
> The difficulty I'm having is that as I'm using widgets, I'm not sure how to
> get the actual window ID for the
> the call to TVRD(), all I seem to get back is the draw widget contents.
>
> e.g.
>
> pro get_window
>
> base = widget_base(/column)
> junk = widget_label(base,value = "Hi")
> draw = widget_draw(base,xsize=200,ysize=300)
> .
> .
> widget_control,base,/realize
> widget_control,draw,get_value = draw_id
>
> res = tvrd()
> help,res
> end
>
> This just returns me an array of the draw widget (200x300), not the whole
> window.
>
> cheers,
>
> Mark
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| Re: TVRD() and WRITE_GIF [message #18646 is a reply to message #18641] |
Tue, 25 January 2000 00:00 |
davidf
Messages: 2866
Registered: September 1996
|
Senior Member |
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Mark Buckley (mark.buckley@rl.ac.uk) writes:
> Hopefully this won't turn out to be a dozy question.
Are there dozy questions!? Well, if there are, I suppose
I specialize in answering them. They are my favorite kind. :-)
> Anyway, what I'd like to do is grab a window image, so that I can write it
> out as a GIF.
All you are going to be able to get from within IDL is
the contents of a graphics or draw widget window. Usually
(thank Goodness!) this is what you want in your GIF file.
When it is not (for example, when you want to see the
whole graphical user interface of a program), you will
have to get some kind of screen capture tool. On my
PC I like HyperSnap, which is a $25 program that you
can find out more about here:
http://www.hyperionics.com/
There are many shareware or free tools that do a similar
job. I like HyperShap because you can include pull-down
menus and the cursor in captured images. This makes it
nice for illustrating how widget programs work in HTML
documentation.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@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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