Anyone know if exist a way to use just close prices in chart style, for when a new candle open use the close price of the previous candle.

NT has a HLC chart style for such bars (if you don't want to program your own bar type):
https://ninjatrader.com/support/helpGuides/nt8/en-us/?chart_styles.htm
See their corresponding warning below the HLC style.

SC has an option to artificially set Open=Close range bars:
https://www.sierrachart.com/index.php?page=doc/ChartSettings.html

Keep in mind that all of the measures are purely artificial for time/range/volume based bars, i.e. the
behavior of your bars will consistently differ from the real prices.


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If you want to visually keep Open=Close switch to Renko or other Reversal Bars which are based
solely on price movement with no regard to time or volume. Nevertheless these bar styles leave
you with a decision about how to treat gaps (visual/artificial fill vs showing the gap).

Coded this up awhile ago because I wanted the exact same thing you do. Works great and makes charts much easier to read. Let me know if you have any suggestions.

https://nexusfi.com/local_links.php?linkid=1867