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CW_DEFROI (some help for dumb person doing first widget prog...) [message #44749]

Fri, 15 July 2005 09:05

Peter Clinch
Messages: 98
Registered: April 1996

Member

I realise the ultimate solution is get a book and learn to do it
properly, but for now I crave a little indulgence to help me get
something up and running ASAP by the good ol' "cut and paste examples
method"...

I've used the GUI builder to set up a basic Draw widget and menu setup.
The program reads in the .bmp files it's required to get, after which
I need an ROI to be drawn in the image. CW_DEFROI looks like the
badger, and I add /BUTTON and /MOTION keywords to the Widget_Draw call
in the original .pro file

Next up, in my event handler for the menu option that will activate the
ROI selection, I start with

wDraw=widget_info(event.top, find_by_uname="Draw")

CentreROI=CW_DEFROI(wDraw)

that creates the relevant ROI widget, and the cursor position is updated
when the mouse is over the image, but it doesn't appear to draw anything
on the image. Can anyone one tell me exactly how I'm being Dumb here?

Thanks, Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net p.j.clinch@dundee.ac.uk http://www.dundee.ac.uk/~pjclinch/

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[Message index]

		CW_DEFROI (some help for dumb person doing first widget prog...) By: Peter Clinch on Fri, 15 July 2005 09:05
		Re: CW_DEFROI (some help for dumb person doing first widget prog...) By: Peter Clinch on Tue, 19 July 2005 01:34
		Re: CW_DEFROI (some help for dumb person doing first widget prog...) By: David Fanning on Mon, 18 July 2005 12:34
		Re: CW_DEFROI (some help for dumb person doing first widget prog...) By: Peter Clinch on Mon, 18 July 2005 04:00

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