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Re: Scrolling in draw widgets - newbie's question [message #31677 is a reply to message #31676]

Tue, 13 August 2002 07:24

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

Evgeny Turchin wrote:
>
> Hello, All !
> Here's the text of my program:
>
> base = WIDGET_BASE(XSIZE=650, YSIZE=400)
> draw1 = WIDGET_DRAW(base, XSIZE = 550, X_SCROLL_SIZE=200, YSIZE = 550,
> Y_SCROLL_SIZE=200, XOFFSET=5, /APP_SCROLL)
> WIDGET_CONTROL, /REALIZE, base
> WIDGET_CONTROL, draw1, GET_VALUE = index
> WSET, index
> ImageIsRead=DIALOG_READ_IMAGE(FILE=FileName, FILTER_TYPE='.tif, .tiff', $
> IMAGE=PhotoArray)
> TVSCL, PhotoArray
>
> The image is successfuly loaded in the viewport but the scrolling does not
> work. Does anybody know
> how to solve the problem and create the widget where scrolling is possible
> in graphic viewport?
> I'm using IDL 5.4 for Win32.

Try this instead:

base = widget_base()
draw = widget_draw(base, xsize=1024, ysize=1024, $
x_scroll_size=512, y_scroll_size=512)
widget_control, base, /realize
plot, indgen(10)

Also see the SWINDOW procedure:

http://www.astro.washington.edu/deutsch-bin/idllibsrch?keywo rd=swindow

Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/

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		Re: Scrolling in draw widgets - newbie's question By: David Fanning on Tue, 13 August 2002 09:29
		Re: Scrolling in draw widgets - newbie's question By: Liam E. Gumley on Tue, 13 August 2002 07:24

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