https://bugs.kde.org/show_bug.cgi?id=34362





--- Comment #34 from rickst29 <rickstockton reno-computerhelp com>  2011-11-15 00:10:16 ---
I'm happy to declare this bug RESOLVED by upstream changes, coming in Qt5. For
reference, my Qt changeset was:
http://codereview.qt-project.org/#change,8548,patchset=6 and the corresponding
Qt BUGID was https://bugreports.qt.nokia.com//browse/QTBUG-22642.

Because Qt5 will include support for up to 31 buttons, KWin (and other KDE
programs) may use those buttons- if the user's platform and pointer device are
recognized as "Gamer-Button Equipped" by Qt itself.

Here is the new set of button names within qnamespace.h:

    enum MouseButton {
        NoButton         = 0x00000000,
        LeftButton       = 0x00000001,
        RightButton      = 0x00000002,
        MidButton        = 0x00000004, // ### Qt 5: remove me
        MiddleButton     = MidButton,
        XButton1         = 0x00000008,
        BackButton       = XButton1,
        ExtraButton1     = XButton1,
        XButton2         = 0x00000010,
        ForwardButton    = XButton2,
        ExtraButton2     = XButton2,
        TaskButton       = 0x00000020,
        ExtraButton3     = TaskButton,
        ExtraButton4     = 0x00000040,
        ExtraButton5     = 0x00000080,
        ExtraButton6     = 0x00000100,
        ExtraButton7     = 0x00000200,
        ExtraButton8     = 0x00000400,
        ExtraButton9     = 0x00000800,
        ExtraButton10    = 0x00001000,
        ExtraButton11    = 0x00002000,
        ExtraButton12    = 0x00004000,
        ExtraButton13    = 0x00008000,
        ExtraButton14    = 0x00010000,
        ExtraButton15    = 0x00020000,
        ExtraButton16    = 0x00040000,
        ExtraButton17    = 0x00080000,
        ExtraButton18    = 0x00100000,
        ExtraButton19    = 0x00200000,
        ExtraButton20    = 0x00400000,
        ExtraButton21    = 0x00800000,
        ExtraButton22    = 0x01000000,
        ExtraButton23    = 0x02000000,
        ExtraButton24    = 0x04000000,
        MaxMouseButton   = ExtraButton24,

    };
    Q_DECLARE_FLAGS(MouseButtons, MouseButton)

You see several 'alias' names in this list. I advise the following usage: 

1: Use 'MiddleButton' instead of 'MidButton'.

2: Use 'BackButton' and 'ForwardButton' -- these names are more widely accepted
and used than the alternatives (Xbutton1, Xbutton2, ExtraButton1,
ExtraButton2).

3. For all higher buttons, including the so-called 'TaskButton', use the
'ExtraButton_nn' name.

And do remember: This is upcoming in Qt5 ONLY; it will NOT be made available in
the Qt 4.x Release Series.

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