| What is wrong with these widgets? [message #9897] |
Mon, 15 September 1997 00:00 |
hegde
Messages: 17
Registered: December 1995
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Junior Member |
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Hi,
While porting my IDL4.0 program to IDL5.0, I came across this weird behavior
of widgets. The widget 'junk' ( see the code below ) starts expanding when the
label widget 'data_val' gets updated. The widget tree is as follows:
base
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------------------------
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con_base dis_base
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-------------- -----------
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junk data_val draw_area
I tested it under IRIX6.2 ( SGI Indy, Indigo2 ) and IRIX6.4 ( SGI Octane ).
Can somebody explain this?.
Thanks,
-M. Hegde
-----------------------------cut here--------------------------------------
PRO draw_event, event
; when there is a mouse event, display a random number
widget_control, event.top, get_uvalue=info
str = STRING ( format='(G13.7)',randomu(s))
widget_control, info.val, set_value=str[0]
end
PRO test_event, event
END
PRO test
; create the base
base = WIDGET_BASE ( /ROW, /NO_COPY, TITLE='Display' )
con_base = WIDGET_BASE ( base, COLUMN=1 )
dis_base = WIDGET_BASE ( base, COLUMN=1 )
width = 60
; create a dummy widget
junk = WIDGET_BASE ( con_base, ROW=2, /FRAME )
l_base = con_base
; create a label widget for display
data_val = WIDGET_LABEL ( l_base, VALUE='no data', $
XSIZE=3*width, /FRAME )
; create a drawing area
draw_area = WIDGET_DRAW ( dis_base, XSIZE=100, YSIZE=100, $
/motion_events, event_pro='draw_event' )
info = { val:data_val, draw_area:draw_area }
; realize the base
WIDGET_CONTROL, base, /REALIZE, SET_UVALUE=info
; manager it
XMANAGER, 'test', base, EVENT_HANDLER='test_event'
END
-------------------------------cut here---------------------------------------
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