How to disable QwtPlotMagnifier right click

[jmsbc]

Hi,

When I use QwtPlotMagnifier for zooming, it assigns the right mouse button for zooming in and out when u hold right mouse button and move up/down. How do I disable this so that I can use it for the QwtPlotZoomer rubberband? Thank you.

-James

[Uwe]

http://qwt.sourceforge.net/class_qwt...6e39fdcaea6745

Uwe

[jmsbc]

Thanks Uwe,

The solution is to do:

mMagnify->setMouseButton(QwtEventPattern::MouseSelect6, Qt::NoButton);

I didn't realize that MouseSelect6 was the one I need to set, thanks

[Uwe]

I didn't realize that MouseSelect6 was the one I need to set, thanks

No, QwtEventPattern::MousePatternCode has absolutely nothing to do with the parameter you have to set in QwtMagnifier::setMouseButton. MouseSelect6 is simply the 6th enum value and is mapped to 5 by the compiler, what might be a value, that does what you want - but this by accident and passing the 6th value of any other enum (or a blank 5 ) would have the same effect.

The values you have to use are those you find in a QMouseEvent:

void QwtMagnifier::setMouseButton(int button, int buttonState)
{
    d_data->mouseButton = button;
    d_data->mouseButtonState = buttonState;
}
 
void QwtMagnifier::widgetMousePressEvent(QMouseEvent *me)
{
    if ( me->button() != d_data->mouseButton || parentWidget() == NULL )
        return;
 
    if ( (me->modifiers() & Qt::KeyboardModifierMask) !=
        (int)(d_data->mouseButtonState & Qt::KeyboardModifierMask) )
    {
        return;
    }
 
    ...
}

void QwtMagnifier::setMouseButton(int button, int buttonState)
{
    d_data->mouseButton = button;
    d_data->mouseButtonState = buttonState;
}

void QwtMagnifier::widgetMousePressEvent(QMouseEvent *me)
{
    if ( me->button() != d_data->mouseButton || parentWidget() == NULL )
        return;

    if ( (me->modifiers() & Qt::KeyboardModifierMask) !=
        (int)(d_data->mouseButtonState & Qt::KeyboardModifierMask) )
    {
        return;
    }

    ...
}

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Uwe