How to detect right-click event for Mac OS

Question

For windows and linux I am able to detect right click. But for mac I donot know how to detect right-click.

How to write java program to detect right click for Mac OS

Answer 1

Use

private static boolean isRightClick(MouseEvent e) {
    return (e.getButton()==MouseEvent.BUTTON3 ||
            (System.getProperty("os.name").contains("Mac OS X") &&
                    (e.getModifiers() & InputEvent.BUTTON1_MASK) != 0 &&
                    (e.getModifiers() & InputEvent.CTRL_MASK) != 0));
}

SwingUtilities.isRightMouseButton() will not work. It is incorrectly implemented for the Mac ctrl-click example because it checks whether e.getModifiers() & 0x4 is non-zero. But the flag used for "command" is also 0x4.

So it will report cmd-click as a right-click but won't report ctrl-click as one. Worse yet, cmd-click will also return true to SwingUtilities.isLeftMouseButton(). If your code is written to handle left-clicks one way and right-clicks another, and you use a second if rather than an else if, you're in for a nasty surprise when both execute.

For those who are interested, these are the complete getModifiers() and getModifiersEx() values for single-modifier clicks.

Left click: (button 1)
Basic: 0000010000 0000000000    16 0
Shift: 0000010001 0001000000    17 64
Ctrl:  0000010010 0010000000    18 128
Cmd:   0000010100 0100000000    20 256
Opt:   0000011000 1000000000    24 512

Mid click: (button 2)
Basic: 0000001000 1000000000    8 512
Shift: 0000001001 0001000000    9 64
Ctrl:  0000001010 0010000000    10 128
Cmd:   0000001100 0100000000    12 256
Opt:   0000001000 1000000000    8 512

Right click: (button 3)
Basic: 0000000100 0100000000    4 256
Shift: 0000000101 0001000000    5 64
Ctrl:  0000000110 0010000000    6 128
Cmd:   0000010100 0100000000    20 256
Opt:   0000001100 1000000000    12 512