[Qt-interest] Build problem when using QtSingleApplication solution

[Marcus Williams]

Hi -

I'm trying to use the QtSingleApplication - I can build the component 
and its examples. The examples work.

However... if I try to use it in a qt application that extends 
QApplication (so we have a MyApp class that extends QApplication) I get 
the following build error when we change it to extending 
QtSingleApplication:

1>moc_MyApp.obj : error LNK2001: unresolved external symbol "public: 
static struct QMetaObject const QtSingleApplication::staticMetaObject" 
(?staticMetaObject at QtSingleApplication@@2UQMetaObject@@B)
1>D:\Projects\hii-testtrunk\MVS\VS2008\MVS\Debug\MVS.exe : fatal error 
LNK1120: 1 unresolved externals

I can solve this by building the singleapplications moc file 
(moc_qtsingleapplication.cpp) as part of our project, but I'm not sure 
this is what I should be doing as this doesnt seem necessary in the 
example code. I have built the QtSingleApplication as a dll, and I have 
linked against the QtSingleApplication lib file during the link step for 
building MyApp.

So a few questions: should this be necessary? and is the LGPL 
"triggered" by building the moc file into our code or is this covered by 
the LGPL exception distributed with the QtSingleApplication solution?

Thanks

Marcus