Qwt sliders and normalized logarithmic scale engines

[msundell]

I'm interested in Qwt and the logarithmic scale engine(s) to provide slider values for different min/max ranges.

Would it be possible to set up a Qwt slider using a log scale engine with the normalized value of 1.0f always being at 50% of the slider regardless of the minimum and maximum values being used?

Typical minimum/maximum values would be: 0.0f-4.0f, 1/64.0f-64.0f, -2-5.0f etc.

Why keeping 1.0f in the middle? once the sliders are used in a vertical layout the 1.0f value would align in a vertical line. This makes editing much easier and 1.0f is mostly the starting point for all of my parameters.

Is Qwt an option?

Thanks