DoubleSlider ASAP

I am Ammy Hoiyken and I am in search for a person who make DoubleSlider Custom widget element in C++ for me. It should inherit from Slider and look like on this pic114940-doubleslider.png

It has two handles instead of one in Slider. Both of them must return their values. Handle on starting point couldnt go further than handle on end point, so as handle on end point couldnt go any lower than handle on start point. Handle may be switched with image.

Project is SUPER URGENT. Payment is 30 USD.