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Problem with Exclusive Button Widgets under IDL for Windows (V3.6.1)
| Problem with Exclusive Button Widgets under IDL for Windows (V3.6.1) [message #3084] |
Thu, 03 November 1994 05:51 |
zawodny
Messages: 121
Registered: August 1992
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Senior Member |
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I have run into a problem using exclusive button widgets under IDL for
Windows Version 3.6.1b . My application has an exclusive base with 2
button widgets. I initialize this so one button is set. If I click on the
other unset button it generates the correct event for that button. It
apparently gets set and the proper event structure goes to the event
handler. However, this is followed by an event with an associated event
structure which is for the other button (the one that was previously set).
On the other hand, when I click on the set button it deselects as it should
without a problem (no extra events). My guess is that somewhere in the guts
of the widgets for windows code an event is generated to unset the
previously set button and that it is not being properly trapped (ignored).
I have written numerous widgets and this particular one runs perfectly
under "regular IDL" on my DEC alpha running OSF/1. I am a bit new to the
Windows widgets though. Has anyone else seen this problem? I'll try to
write a very simple illustration of the problem (duplicate it with simple
code) and also see if it is peculiar to exclusive widgets with only two
buttons. For now I have hacked my code to include a
widget_control,event.top,/clear_event
statement at an appropriate place, but this is not the answer since I can
nolonger "click ahead" and generate a widget event queue of any length.
Has anyone else run into this problem?
TIA,
--
Joseph M. Zawodny (KO4LW) NASA Langley Research Center
Internet: zawodny@arbd0.larc.nasa.gov MS-475, Hampton VA, 23681-0001
TCP/IP: ko4lw@ko4lw.ampr.org Packet: ko4lw@n4hog.va.usa
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