Listener output

[Barry Denton]

Bill Baxter Wrote:

> Barry Denton wrote:
> > Barry Denton Wrote:
> > 
> >> Jarrett Billingsley Wrote:
> >>
> >>> "Barry Denton" <basse42 at yahoo.com> wrote in message 
> >>> news:fubgb0$22go$1 at digitalmars.com...
> >>>> I have a Listener added to a button as so :-
> >>>>
> >>>> button.addListener(DWT.Selection, new class Listener {
> >>>>        void handleEvent(Event event) {
> >>>>            itemWords [5] = "item has changed " ;//~ 
> >>>> System.currentTimeMillis();
> >>>>            minitable.clear(5);  }  });
> >>>>
> >>>> When pressed the button outputs this:-
> >>>>
> >>>> Event {missing or misplaced '}'}Event {type=13 Button {Change item} 
> >>>> time=1679601378 data={null} x=0 y=0 width=0 height=0 detail=0}
> >>>> .
> >>>> Now all is as it should be except for the  {missing or misplaced '}'}
> >>> Tango's formatting uses a pair of curly braces like "{}".  Your output is 
> >>> supposed to go "{Event {type=13....", but Tango sees the opening '{', tries 
> >>> to parse it as a format specifier, and fails, leaving you with an error 
> >>> message embedded in the output.
> >>>
> >>> The question I have is: where is this output being generated?  This code 
> >>> doesn't seem to generate it.
> >>>
> >>> I ask because it's a simple fix: instead of doing something like 
> >>> "Stdout.formatln(x.toString())", just use "Stdout.formatln("{}", x)", that 
> >>> is, escape the string by making it a parameter to be formatted. 
> >>>
> >>>
> >> Thanks but this did not work .Did I mess it up?
> >>  button.addListener(DWT.Selection, new class Listener {
> >>         void handleEvent(Event event) {
> >>             itemWords [5] = ("item has changed " ~ clock.stringof~"  "~ cast(char)clock);
> >>             Stdout.formatln("{}""{}" ,event.mangleof, event.stringof).newline;
> >>             Stdout.formatln("{}""{}" ,clock.mangleof, clock.stringof).newline;
> >>             Stdout.print(itemWords).newline;
> >>             minitable.clear(5); 
> >>
> > Tried this but still there
> > 
> > button.addListener(DWT.Selection, new class Listener {
> >         void handleEvent(Event event) {
> >             itemWords [5] = ("item has changed " ~ clock.stringof~"  "~ cast(char)clock);
> >             Stdout.formatln("{}""{}" ,event.mangleof, event.stringof).newline;
> >             Stdout.formatln("{}""{}" ,clock.mangleof, clock.stringof).newline;
> >             Stdout.formatln("{}",event);
> >             Stdout.print(itemWords).newline;
> >             minitable.clear(5); 
> > Output
> > C3dwt7widgets5Event5Eventevent
> > 
> > PS5tango4time9WallClock9WallClockclock
> > 
> > Event {missing or misplaced '}'}Event {type=13 Button {Change item at index 5} time=1753196186 data={null} x=0 y=0 width=0 height=0 detail=0}
> > [ item 0  , item 1  , item 2  , item 3  , item 4  , item has changed clock  , item 6  , item 7  , item 8  , item 9   ]
> > Event {missing or misplaced '}'}Event {type=36 Table {} time=1753196186 data={null} x=0 y=0 width=0 height=0 detail=0}
> > 
> 
> The problem is in dwt's dwt/widgets/Event.d, toString method:
> 
> override public char[] toString () {
>      return Format( "Event {type={} {} time={} data={} x={} y={} 
> width={} height={} detail={}}",
>          type, widget, time, data, x, y, width, height, detail ); 
> //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ 
> //$NON-NLS-6$ //$NON-NLS-7$
> }
> 
> It needs to escape the first and last '{'s.
> Can you fix it, Frank?
> 
> --bb
Will result be rest of  fields then filled in ?