| Passing info and destroying widgets... [message #15898] |
Mon, 21 June 1999 00:00  |
dirk
Messages: 15
Registered: March 1998
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Junior Member |
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Here's something i can't figure out... I'm following the advice of DF and
communicating between my widgets with info structures. All is well, but now i
want to pass the info structure from the event handler back to the parent widget
with
WIDGET_CONTROL, event.top, SET_UVALUE=lines, /NO_COPY
and then destroy the widget. But you can't do this, because WIDGET_CONTROL (i
think) dereferences event.top so that
WIDGET_CONTROL, event.top, /DESTROY
fails since it doesn't know where to look. (you can't even put in a dummy to hold
the event.top number, the widget itself is gone from that id)
Unfortunately, you can't /DESTROY the top widget first and expect to set it's
UVALUE later, either. So what do i do here? I tried putting a flag in my
info structure to trigger the base widget destruction back in the widget
definition level (not in the event handler), but i can't figure out when the
program would be able to look at that newly inserted flag.
Thanks for your help. - Dirk
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