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 <k...@emweb.be
<mailto:k...@emweb.be>> wrote:
Hey Bastien,
2011/10/14 Bastien AMIEL <bastien.am...@opencubetech.com
<mailto:bastien.am...@opencubetech.com>>:
> 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
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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
witty-interest@lists.sourceforge.net
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
witty-interest@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/witty-interest
