Slide/Selection Bar Help Please

Hi,
I am new here :), not sure where to start or ask.
I am hoping someone may be able to help me or point me in the right direction to create a horizontal selection bar maybe with two changeable sliders to be able to choose different constants. Eg: numbers 1-10 and being able to select different amounts from a single number to all the numbers but only sequential.
Thanks in advance :)
Look into a GUI framework like Qt:
https://en.wikipedia.org/wiki/Qt_%28software%29
Thanks LB
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