Setting Initial QwtSlider Position

[Mannion]

This sounds very simple and probably is but how do you manipulate the slider position of a QwtSlider for example to set a range of initial positions. If I call setNum it updates the label but not the slider position. My apologies if I am missing something really easy here.

Is it possible to disable a QwtSlider without greying out the associated scale. Or is it possible to stop the slider from being moved without disabling it.

Thanks again in advance.

[Uwe]

This sounds very simple and probably is but how do you manipulate the slider position of a QwtSlider for example to set a range of initial positions.

slider->setValue( value );

slider->setValue( value );

To copy to clipboard, switch view to plain text mode 

Is it possible to disable a QwtSlider without greying out the associated scale.

The labels are painted with QPalette::Text, the ticks with QPalette::WindowText:

QPalette pal = slider->palette();
pal.setBrush(  QPalette::Disabled, QPalette::Text, 
    pal.brush(  QPalette::Active, QPalette::Text ) );
pal.setBrush(  QPalette::Disabled, QPalette::WindowText, 
    pal.brush(  QPalette::Active, QPalette::WindowText ) );
slider->setPalette( pal );

QPalette pal = slider->palette();
pal.setBrush(  QPalette::Disabled, QPalette::Text, 
    pal.brush(  QPalette::Active, QPalette::Text ) );
pal.setBrush(  QPalette::Disabled, QPalette::WindowText, 
    pal.brush(  QPalette::Active, QPalette::WindowText ) );
slider->setPalette( pal );

To copy to clipboard, switch view to plain text mode 

Uwe

[Mannion]

Uwe

Prompt, thorough and concise as always. Your explanation has also made things much clearer.

Thankyou so much. You make working with Qwt a pleasure.

[Mannion]

One further thing Uwe,

Is it possible to adjust the appearance of a disabled QwtSlider so that it appears disabled apart from the scale which is drawn as if the QwtSlider was enabled?

Thanks again for all of your help.

[Uwe]

I recommend to check the code: all colors used for painting are taken from the current palette.

Uwe