Binary Compatibility Workarounds

Binary Compatibility Workarounds

This page describes some workarounds for keeping binary compatibility in patch releases.

You should read the KDE reference: http://techbase.kde.org/Policies/Binary_Compatibility_Issues_With_C++

Declaring a slot for private classes (d-pointer)

Use a Q_PRIVATE_SLOT:

<br /> class A: public QObject<br /> {<br /> Q_OBJECT<br /> …<br /> private:<br /> Q_PRIVATE_SLOT(d_func(), void myPrivateSlot())<br /> };

/* in .cpp file '''/
<br /> void APrivate::myPrivateSlot() {…}
<br /> #include &quot;moc_a.cpp&amp;quot;<br />

Pitfalls to avoid:
Don't include `a.moc`, but `moc_a.cpp` in your .cpp file
* Q_PRIVATE_SLOT takes the complete signature of the private slot, not just its name