Hi Bastien,
I had a similar error when my model contained a non-valid UTF8 character
which got decoded to this: �
In the WTableView it did not produce an error until I sorted. Then I got
same error as you.
Could it be that your model contains any of these characters?
-Magnus
On 17/10/2011 11:51, Bastien AMIEL wrote:
> The exception is not generated by a lexical_cast that I do on my code,
> but by WT converting some (bad) data I send.
> This exception is generated when i use a custom WItemDelegate, I create
> it like this :
>
> mtableView->setItemDelegateForColumn(3, new
> WidgetCustomItemDelegate(this));
>
>
> The update function of my own WItemItemDelegate look like this :
>
> ---------------------------------------
> Wt::WWidget*WidgetCustomItemDelegate::update(Wt::WWidget*widget,constWt::WModelIndex&index,Wt::WFlags<Wt::ViewItemRenderFlag>flags)
>
>
> {
>
> WString path;
>
> WString displayRole;
>
> if ( index.data(UserRole).type() == typeid(WString))
>
> {
>
> path = boost::any_cast<WString>(index.data(UserRole));
>
> }
>
> if ( index.data(DisplayRole).type() == typeid(WString))
>
> {
>
> displayRole = boost::any_cast<WString>(index.data(DisplayRole));
>
> }
>
> bool isNew = false;
>
> if (!(flags & RenderEditing))
>
> {
>
> if (!widget)
>
> {
>
> isNew = true;
>
> Wt::WText * text = new Wt::WText();
>
> Wt::WContainerWidget * container = new
> Wt::WContainerWidget();
>
> Wt::WHBoxLayout * layout = new Wt::WHBoxLayout();
>
> layout->setContentsMargins(2,4,2,6);
>
> container->setLayout(layout);
>
> layout->addWidget(text);
>
> container->setObjectName("container");
>
> text->setText(displayRole);
>
> text->setToolTip(path);
>
> text->clicked().connect(this,
> &WidgetCustomItemDelegate::clicked);
>
> widget = container;
>
> }
>
> if (!index.isValid())
>
> return widget;
>
> Wt::WContainerWidget * container =
> dynamic_cast<Wt::WContainerWidget *>(widget->find("container"));
>
> if (container)
>
> {
>
> Wt::WText * text = dynamic_cast<Wt::WText
> *>(container->widget(0));
>
> if (text)
>
> {
>
> text->setText(displayRole);
>
> text->setToolTip(path);
>
> }
>
> }
>
> }
>
> return widget;
> }
> --------------------------------
>
> Is there anything wrong with this update function ? I tried to look the Wt
> way to use WItemDelegate cause I didn't understand how it should be used.
> ( I need this item delegate to be able to connect a click event on a
> tableView item. )
>
>
>
> Le 14/10/2011 19:32, Mohammed Rashad a écrit :
>> please post the code which contains boost::lexical_cast<>
>> you may be converting fundamental datatypes such string to int or
>> something like that
>>
>> On Fri, Oct 14, 2011 at 5:57 PM, Koen Deforche <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Hey Bastien,
>>
>> 2011/10/14 Bastien AMIEL <[email protected]
>> <mailto:[email protected]>>:
>> > Hi,
>> >
>> > I get a crash (that reset the current session) while i'm using
>> WTableView
>> > with some Custom WItemDelegate.
>> > The crash does not come as soon as I open the page, it happens
>> after some
>> > elements are deleted and added to a different WTableView.
>> > I do not use InternalPath.
>> > I display UTF8 characters.
>> >
>> > I get this log :
>> >
>> > [error] "Error during event handling: bad lexical cast: source
>> type value
>> > could not be interpreted as target"
>> > [fatal] "bad lexical cast: source type value could not be
>> interpreted as
>> > target"
>> > [notice] "Session destroyed (#sessions = 0)"
>> >
>> >
>> > Any idea of what could cause this kind of problem ?
>>
>> I would try to find out by breaking on an exception being thrown (in
>> gdb: catch throw) and then see what happens ?
>>
>> boost::lexical_cast<> is used all over the place, so it's a bit hard
>> to guess where it comes from.
>>
>> Regards,
>> koen
>>
>>
>> ------------------------------------------------------------------------------
>> All the data continuously generated in your IT infrastructure
>> contains a
>> definitive record of customers, application performance, security
>> threats, fraudulent activity and more. Splunk takes this data and
>> makes
>> sense of it. Business sense. IT sense. Common sense.
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>>
>>
>>
>>
>> --
>> Regards,
>> Mohammed Rashad K M
>> M.S. (By Research) student
>> Lab for Spatial Informatics
>> Department of CSE
>> International Institute of Information Technology
>> Hyderabad, India
>>
>>
>>
>> ------------------------------------------------------------------------------
>> All the data continuously generated in your IT infrastructure contains a
>> definitive record of customers, application performance, security
>> threats, fraudulent activity and more. Splunk takes this data and makes
>> sense of it. Business sense. IT sense. Common sense.
>> http://p.sf.net/sfu/splunk-d2d-oct
>>
>>
>> _______________________________________________
>> witty-interest mailing list
>> [email protected]
>> <mailto:[email protected]>
>> https://lists.sourceforge.net/lists/listinfo/witty-interest
>
>
>
> ------------------------------------------------------------------------------
> All the data continuously generated in your IT infrastructure contains a
> definitive record of customers, application performance, security
> threats, fraudulent activity and more. Splunk takes this data and makes
> sense of it. Business sense. IT sense. Common sense.
> http://p.sf.net/sfu/splunk-d2d-oct
>
>
>
> _______________________________________________
> witty-interest mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/witty-interest
------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2d-oct
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