Delegates ,smart pointers and GUI

[Andre Poenitz]

Signals and slots are not "in C++". Trolltech provides them by adding
two new keywords to C++. You can't do what they did without their
language extension.

Of course you can. The "language extensions" are defined as empty
macros. moc can generate some (C++) glue code by scanning for those,
but you could pretty much do the same manually. In the end it's plain
C++ that gets compiled.

Andre'