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Trackbar with floating values

asked 2016-04-01 06:22:15 -0500

Nbb gravatar image


Does anyone know if it is possible to implement a trackbar with floating values with single decimal place ? The only way I managed to achieve it is to divide the value by 10. But how do I display this result on the trackbar itself ? for e.g. to show me 1.2 instead of 12


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You cannot with the standard OpenCV GUI tools. But keep in mind that it is merely there for debugging. You would need to switch to QT for example, to make a GUI which is more versatile and which could do exactly that what you want.

StevenPuttemans gravatar imageStevenPuttemans ( 2016-04-01 06:34:58 -0500 )edit

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answered 2020-01-27 06:25:52 -0500

Bit late, but you can divide the values from the trackbar by 10 or 100. For example, if I want to get float values from 0 to 5, I will do a trackbar with values from 0 to 50 and will divide them by 10.

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Asked: 2016-04-01 06:22:15 -0500

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Last updated: Apr 01 '16