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c++qtsymbianqwidgetqtgui

Qt5: error: 'WA_LockPortraitOrientation' is not a member of 'Qt'

I'm trying to compile a Qt4/Symbian project to Qt5, while preserving support for Qt4/Symbian.

Currently the MainWindow::setOrientation auto-generated boilerplate function is giving me trouble.

It gives me these compiler errors:

error: 'WA_LockPortraitOrientation' is not a member of 'Qt'
error: 'WA_LockLandscapeOrientation' is not a member of 'Qt'
error: 'WA_AutoOrientation' is not a member of 'Qt'
Solution

  • Yes, those were removed in Qt 5 as you noted yourself.

    The reason is that these are Symbian-only features and such things just confuse the Qt users if they only work on a certain platform, especially if that platform is not even supported by Qt 5, inherently.

    The corresponding gerrit change can be found in here:

    https://codereview.qt-project.org/#change,11280

    You need to change these lines

    #if QT_VERSION < 0x040702
    // Qt < 4.7.2 does not yet have the Qt::WA_*Orientation attributes

    to these:

    #if (QT_VERSION < QT_VERSION_CHECK(4, 7, 2)) || (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
    // Qt < 4.7.2 does not yet have the Qt::WA_*Orientation attributes
    // Qt 5 has removed them.

    The nice way for conditionally allowing certain features based on the Qt version would be this:

    #if (QT_VERSION < QT_VERSION_CHECK(4, 7, 2)) || (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
...
#endif

    It is cleaner and nicer than hard-coding hex values. It is also the recommended way that existing Qt modules follow, like QtSerialPort.