> The problem is that whenever one of the four (exclusive)
> buttons is selected, the event handling routine is entered twice
Jason,
You might try setting the NO_RELEASE keyword in your WIDGET_BUTTON functions.
You might find it easier (in the long run) to start using the CW_BGROUP
function for producing groups of normal, exclusive and non-exclusive buttons
(again supplying the NO_RELEASE keyword).
Good Luck,
Justin
In article <3711C6D8.2781@rmsb.u-bordeaux2.fr>, Jason Brookes
<jason.brookes@rmsb.u-bordeaux2.fr> wrote:
> Hi,
>
> I have been experiencing an annoying widget-event handling problem. I
> create a widget "sub-panel" on which the user is allowed to set
> (exclusively) one of four possible buttons, each button corresponding to
> a different image. I have included the relevant code from the widget
> creation and event handling functions below. The problem is that
> whenever one of the four buttons is selected, the event handling routine
> is entered twice, AS IF responding to both the previous mouse button
> release, and the current mouse button press (this may or may not be what
> is actually happening). For example, if button_3 is currently set, and
> the user sets button 1, the event handling routine will first execute
> the code corresponding to 'stim_3' in the CASE statement followed by the
> code corresponding to 'stim_1'. I would much rather it executed only the
> code corresponding to 'stim_1'.
>
> Hope my explanation is clear(ish). Can anybody enlighten me ?
>
> While I'm at it, is there an elegant way of updating the maximum value
> for a floating-point slider ?
>
> Cheers,
>
> Jason
>
>
> Jason A. Brookes,
> R�sonance Magn�tique des Syst�mes Biologiques,
> UMR 5536 du CNRS/Universit� Victor Segalen Bordeaux 2,
> 146 ru� L�o Saignat,
> 33076 Bordeaux,
> France.
>
> Tel: +33 (0)5 57 57 10 83
> Fax: +33 (0)5 56 96 13 41
> E-mail: jason.brookes@rmsb.u-bordeaux2.fr
>
>
>
>
>
>
> PRO sea_base_widget_event,event
>
> COMMON sea_common,im_par,sea_widget
>
> WIDGET_CONTROL,event.id,GET_UVALUE = event_val
>
> CASE event_val OF
>
> 'stim_1':$
> BEGIN
> im_par.overlay_id = 1
> WIDGET_CONTROL,sea_widget.slider[1],set_slider_max = $
> MAX(stat_map[*,*,im_par.dz,im_par.overlay_id-1])
> update_image_window
> END
>
> 'stim_2':$
> BEGIN
> im_par.overlay_id = 2
> WIDGET_CONTROL,sea_widget.slider[1],set_slider_max = $
> MAX(stat_map[*,*,im_par.dz,im_par.overlay_id-1])
> update_image_window
> END
>
> 'stim_3':$
> BEGIN
> im_par.overlay_id = 3
> WIDGET_CONTROL,sea_widget.slider[1],set_slider_max = $
> MAX(stat_map[*,*,im_par.dz,im_par.overlay_id-1])
> update_image_window
> END
>
> 'stim_4':$
> BEGIN
> im_par.overlay_id = 4
> WIDGET_CONTROL,sea_widget.slider[1],set_slider_max = $
> MAX(stat_map[*,*,im_par.dz,im_par.overlay_id-1])
> update_image_window
> END
>
> PRO ENDCASE
>
> END
>
>
> sea_base_widget
>
> sea_widget = {root:0L,slider:LONARR(2)}
>
> ....
> ....
>
> base = WIDGET_BASE(/COLUMN)
> sub_base = WIDGET_BASE(base,/ROW,/FRAME,/EXCLUSIVE)
>
> slider = CW_FSLIDER(base,TITLE = 'threshold',UVALUE ='f_stat_sld',$
> MINIMUM = 0.0,MAXIMUM = 50.0,VALUE = 25.0,FORMAT = '(F4.1)',$
> XSIZE = 256)
>
> button_1 = WIDGET_BUTTON(sub_base,UVALUE = 'stim_1',VALUE = '2.5 Hz')
> button_2 = WIDGET_BUTTON(sub_base,UVALUE = 'stim_2',VALUE = '5.0 Hz')
> button_3 = WIDGET_BUTTON(sub_base,UVALUE = 'stim_3',VALUE = '7.5 Hz')
> button_4 = WIDGET_BUTTON(sub_base,UVALUE = 'stim_4',VALUE = 'Full F')
> CASE im_par.overlay_id OF
> 1: WIDGET_CONTROL,button_1,/SET_BUTTON
> 2: WIDGET_CONTROL,button_2,/SET_BUTTON
> 3: WIDGET_CONTROL,button_3,/SET_BUTTON
> 4: WIDGET_CONTROL,button_4,/SET_BUTTON
> ENDCASE
>
> sea_widget.root = base
> sea_widget.slider[1] = slider
>
> ....
> ....
>
> XMANAGER,'sea_base_widget',sea_widget.root
>
> END
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
