[Solved] How to enable QT_DEPRECATED in Qt 5.4.0 build

njozwiak

Hi all,

How do I enable the QT_DEPRECATED flag when I build Qt 5.4.0? I am trying to build zbar against Qt, but it uses deprecated members and functions.

In file included from qt/QZBarThread.h:30:0,
             from qt/QZBar.cpp:28:
./include/zbar/QZBarImage.h: In constructor ‘zbar::QZBarImage::QZBarImage(const QImage&)’:
./include/zbar/QZBarImage.h:57:38: error: ‘const class QImage’ has no member named ‘numBytes’
     unsigned long datalen = qimg.numBytes();
                                  ^
qt/QZBar.cpp: In constructor ‘zbar::QZBar::QZBar(QWidget*)’:
qt/QZBar.cpp:52:39: error: ‘x11Info’ was not declared in this scope
     thread->window.attach(x11Info().display(), winId());
                                   ^
...

QtGui/qimage.h:

...
#if QT_DEPRECATED_SINCE(5, 0)
    QT_DEPRECATED inline int numColors() const;
    QT_DEPRECATED inline void setNumColors(int);
    QT_DEPRECATED inline int numBytes() const;
#endif
...

Thanks

SGaist

Hi,

IIRC, you need to use QT_DISABLE_DEPRECATED_BEFORE with a value 0x040900

Hope it helps

njozwiak

Hi,

Thanks for the response. Could you give a little more detail? How would the QT_DISABLE_DEPRECATED_BEFORE flag be set?

Thanks

SGaist

Add

DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x040900

to your pro file and your should be good to go