Hi there,
first post. I am just starting with Wt.
I was trying the Images layout found at
http://www.webtoolkit.eu/widgets/layout/imagesWt's example gallery.
When trying to compile the second example the following signal/slot
connection
image->mouseMoved().connect(std::bind([=] (const Wt::WMouseEvent& e) {
out->setText("You're pointing the background at "
"(" + boost::lexical_cast<std::string>(e.widget().x) +
"," + boost::lexical_cast<std::string>(e.widget().y) +
").");
}, std::placeholders::_1));
results in series of compiler errors starting with
error C2903: 'result' : symbol is neither a class template nor a function
template
which, as far as I've been able to know, are related to the C++
implementation (C++11 I think). I am using MS VS2010.
I spent some time looking for a workaround. Despite not fully understanding
why this happens, the only simple solution (compiling and working) I found
is the following:
image->mouseMoved().connect(
boost::bind( &MyClass::OnMouseMoved, this, _1 ) );
void MyClass::OnMouseMoved( const Wt::WMouseEvent& e )
{
m_Out->setText("You're pointing the background at "
"(" + boost::lexical_cast<std::string>(e.widget().x) +
"," + boost::lexical_cast<std::string>(e.widget().y) +
").");
}
Don't know whether others have experienced this before, but hope it helps.
Kind regards,
JON HAITZ
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