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Re: get image from widget_draw [message #54246]

Fri, 01 June 2007 04:15

Jo Klein
Messages: 54
Registered: January 2006

Member

Your image variable doesn't persist between executions of pic_event. Put
a breakpoint in and see how the content of it vanishes. The
quick-and-dirty solution is to store it in a common block (sorry David
:) ), but there are better approaches e.g. storing your data in a uvalue.
Jo

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Re: get image from widget_draw [message #54250 is a reply to message #54246]

Fri, 01 June 2007 01:05

skymaxwell@gmail.com is currently offline

skymaxwell@gmail.com
Messages: 127
Registered: January 2007

Senior Member

i saved image through TVRD function. Now i want output it to my
widget_draw. Use TVSCL (also try TV) procedure. My widget_draw become
full black color. in IDLDE i haven't any errors. so here is part of my
source code

PRO PIC_EVENT

WIDGET_CONTROL,pic,GET_VALUE=w_ID
WIDGET_CONTROL,event.id,GET_UVALUE=widget
WSET,w_ID
image=MAKE_ARRAY(3,600,400)
...

IF (widget EQ 'button_save') THEN BEGIN
image=TVRD(TRUE=1)
help,image
ENDIF

IF (widget EQ 'button_show') THEN BEGIN
TVSCL,image,TRUE=1
ENDIF
END

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Re: get image from widget_draw [message #54251 is a reply to message #54250]

Thu, 31 May 2007 18:16

Jim Pendleton
Messages: 13
Registered: July 2001

Junior Member

<skymaxwell@gmail.com> wrote in message
news:1180636301.310368.117810@o5g2000hsb.googlegroups.com...
> hello
> how get image from widget_draw ?
>

There's a utility on the ITT IDL codebank for copying a draw widget to the
system clipboard, if
that's what you're looking for. See

http://www.ittvis.com/codebank/search.asp?FID=372

Jim P.

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Re: get image from widget_draw [message #54254 is a reply to message #54251]

Thu, 31 May 2007 11:55

Jo Klein
Messages: 54
Registered: January 2006

Member

WSET to its window id, then use TVRD or TVREAD.
Jo

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Re: get image from widget_draw [message #54376 is a reply to message #54246]

Fri, 01 June 2007 11:13

skymaxwell@gmail.com
Messages: 127
Registered: January 2007

Senior Member

i'm not sure...you mean this one ?

IF (widget EQ 'button_save') THEN BEGIN
;image=TVRD(TRUE=1)
WIDGET_CONTROL,pic,GET_UVALUE=image
;help,image

ENDIF

IF (widget EQ 'button_show') THEN BEGIN
;TVSCL,image,TRUE=1
WIDGET_CONTROL,pic,SET_UVALUE=image
ENDIF

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