| WIDGET_BASE resizing problem [message #12458] |
Tue, 04 August 1998 00:00 |
Hans-Martin v.Stockha
Messages: 4
Registered: June 1996
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Junior Member |
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Hi,
is there a known maximum depth of a widget_base hierarchy up to wich
resizing of the innermost base is done correctly?
I found some funny and sometimes unpredictable behavior with dynamic
resizing of widget_bases after adding and deleting a control item to it.
Maybe, anybody can explain to me, why resizing will work for the first
three, but not for the fourth level in the following example:
; create a small widget hierarchy
base = widget_base(/COLUMN)
ob2 = WIDGET_BASE(base, /COLUMN)
ob3 = WIDGET_BASE(ob2, /COLUMN)
ob4 = WIDGET_BASE(ob3, /COLUMN)
widget_control, base, /REALIZE
; add any control item on level 1
a=widget_draw(base) & widget_control,a,/destroy
; add any control item on level 2
a=widget_draw(ob2) & widget_control,a,/destroy
; add any control item on level 3
a=widget_draw(ob3) & widget_control,a,/destroy
; add any control item on level 4
; ==> base ob4 will not shrink back to its original size !!
a=widget_draw(ob4) & widget_control,a,/destroy
Within a more complex dialog, i.e. one with even deeper nestings,
resizing is correct up to the fifth level, but just in one single
base.
Thanks for any help,
Hans-Martin von Stockhausen.
PS: I am using IDL5.1 on Solaris/Sparc and NT4.0.
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