Can't create macro for QTextStream manipulator functions

ocgltd

I'm creating some macros to ease transition from Qt5 to Qt6 for some of my shared code. For some reason, the QTextStream manipulator functions just don't want to be used in a macro!

Here's example 1, and under Qt6 the Qt::endl line causes compiler error: "MyLib::Qt has not been declared". This code is in my compat.h file which does not set a namespace. Why is it even referencing MyLib:: ?? Notice the SkipEmbyParts macro works fine.

// Example 1
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
#define QT_COMPAT_SKIPEMPTYPARTS                   QString::SkipEmptyParts
#define QT_COMPAT_ENDL                             "\n"
#else
#define QT_COMPAT_SKIPEMPTYPARTS                   Qt::SkipEmptyParts
#define QT_COMPAT_ENDL                             Qt::endl
#endif

And here's example number 2, in this case the ::Qt::flush causes compiler error: "Unexpected qualified id before '::' token". I tried to prefix my manipulator with :: so that no higher level namespace would be assumed...but that chokes too.

// Example 2
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
#define QT_COMPAT_FLUSH                            flush
#else
#define QT_COMPAT_FLUSH                            ::Qt::flush
#endif

Can someone help me fix my macros?

ocgltd

Ok, my error. I was USING the macro incorrectly in one spot, writing MyLib::QT_COMPAT_FLUSH. Once I just used the macro name all worked as expected.

SGaist

Hi,

Can you provide a minimal buildable example showing this ?

ocgltd

Ok, my error. I was USING the macro incorrectly in one spot, writing MyLib::QT_COMPAT_FLUSH. Once I just used the macro name all worked as expected.