Hey,
setImplementation() should be the first call in a WCompositeWidget, it
seemed that you called it twice before ? Perhaps yes, this is not something
that is handled correctly.
Regards,
koen
2013/2/22 Stefan Ruppert <s...@myarm.com>
> Hi,
>
> ok I have found the problem. It was in the WImagePair class:
>
> The following code produced the core:
> WImagePair::WImagePair(WImage* image1, WImage* image2,
> bool clickIsSwitch, WContainerWidget *parent)
> : WCompositeWidget(parent),
> impl_(new WContainerWidget()),
> icon1_(image1),
> icon2_(image2)
> {
> setImplementation(impl_);
> impl_->addWidget(icon1_);
> impl_->addWidget(icon2_);
> impl_->setLoadLaterWhenInvisible(false);
> setImplementation(impl_);
>
> ...
> }
>
>
> And this fixes the core ;-)
>
> WImagePair::WImagePair(WImage* image1, WImage* image2,
> bool clickIsSwitch, WContainerWidget *parent)
> : WCompositeWidget(parent),
> impl_(new WContainerWidget()),
> icon1_(image1),
> icon2_(image2)
> {
> impl_->addWidget(icon1_);
> impl_->addWidget(icon2_);
> setImplementation(impl_);
> /* ^^^^^^^^^^^^^^^
> Seems to me that the setImplementation() method has changed... */
>
> impl_->setLoadLaterWhenInvisible(false);
>
> ...
> }
>
> Stefan
>
> Am 22.02.2013 12:03, schrieb Stefan Ruppert:
> > Hi,
> >
> > I found the cause of the crash. Within our Wt app we wanted to use the
> > WIconPair class. But with a sligthly modified WImage class. Therefore I
> > copied the WIconPair to WImagePair which gets just already created
> > WImage objects.
> >
> > The custom Image class adds support for showing a disabled (grey'd icon)!
> >
> > Adding a WImagePair object to a layout manager results in the previous
> > mentioned core dump!
> >
> > I have attached the apropriate sources.
> >
> > class LeftViewShowImage : public Image
> > {
> > public:
> > LeftViewShowImage(const Wt::WString& tooltip)
> > : Image(tooltip,
> > Wt::WLink(Wt::WApplication::resourcesUrl() +
> > "icons/leftviewshow.png"),
> > Wt::WLink(Wt::WApplication::resourcesUrl() +
> > "icons/leftviewshow_d.png"),
> > 16, 16) {}
> > };
> >
> > class LeftViewHideImage : public Image
> > {
> > public:
> > LeftViewHideImage(const Wt::WString& tooltip)
> > : Image(tooltip,
> > Wt::WLink(Wt::WApplication::resourcesUrl() +
> > "icons/leftviewhide.png"),
> > Wt::WLink(Wt::WApplication::resourcesUrl() +
> > "icons/leftviewhide_d.png"),
> > 16, 16) {}
> > };
> >
> > mToggleLeftView =
> > new WImagePair(new LeftViewHideImage(WString::tr("leftview-hide-text")),
> > new LeftViewShowImage(WString::tr("leftview-show-text")));
> >
> > mToggleLeftView->icon1Clicked().connect(this, &Browser::toggleLeftView);
> > mToggleLeftView->icon2Clicked().connect(this, &Browser::toggleLeftView);
> >
> > HBoxLayout* hbox1 = new WHBoxLayout();
> >
> > adding this widget to a layout causes the crash!
> > ====> hbox1->addWidget(mToggleLeftView);
> >
> > Any idea?
> >
> >
> > Regards,
> > Stefan
> >
> >
> > Am 22.02.2013 10:53, schrieb Stefan Ruppert:
> >> Hi all,
> >>
> >> I'm currently trying to upgrade to Wt 3.3.0 from Wt 3.2.3. Compiling
> >> just went fine. But during initialization I get the following core dump:
> >>
> >> It seems to me that some Widget/Layout we are using is not supported
> >> anymore!?
> >>
> >> assert(false) within WContainerWidget::createLayoutItemImpl()!
> >>
> >> Any idea?
> >>
> >> Regards,
> >> Stefan
> >>
> >>
> >> #0 0x00007ffff6045425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
> >> #1 0x00007ffff6048b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
> >> #2 0x00007ffff603e0ee in ?? () from /lib/x86_64-linux-gnu/libc.so.6
> >> #3 0x00007ffff603e192 in __assert_fail () from
> >> /lib/x86_64-linux-gnu/libc.so.6
> >> #4 0x00007ffff733faa7 in Wt::WContainerWidget::createLayoutItemImpl
> >> (this=<optimized out>, item=0x7fffd4031570) at
> >> /home/ruppert/work/wt/wt-3.3.0-rc2/src/Wt/WContainerWidget.C:176
> >> #5 0x00007ffff74d9dc5 in Wt::WWidget::createSDomElement (this=0x3762,
> >> app=0x376a) at /home/ruppert/work/wt/wt-3.3.0-rc2/src/Wt/WWidget.C:325
> >> #6 0x00007ffff72b1f16 in Wt::StdWidgetItemImpl::createDomElement
> >> (this=<optimized out>, fitWidth=<optimized out>, fitHeight=<optimized
> >> out>, app=0x7fffd4031570) at
> >> /home/ruppert/work/wt/wt-3.3.0-rc2/src/Wt/StdWidgetItemImpl.C:112
> >> #7 0x00007ffff72ac267 in Wt::StdGridLayoutImpl2::createElement
> >
> >
> >
> >
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