Hi Support,

I have the following code for drawing an arrow in an indicator:

outputParameterInfos = new OutputParameterInfo[] {new OutputParameterInfo("up", OutputParameterInfo.Type.DOUBLE,
OutputParameterInfo.DrawingStyle.ARROW_SYMBOL_UP), new OutputParameterInfo("down", OutputParameterInfo.Type.DOUBLE,
OutputParameterInfo.DrawingStyle.ARROW_SYMBOL_DOWN)};

I read the following from https://www.dukascopy.com/wiki/index.php?title=Indicator_API:_OutputParameterInfo :
ARROW_SYMBOL_UP - draws arrow pointing up. Symbol of the arrow can be customized
ARROW_SYMBOL_DOWN - draws arrow pointing down. Symbol of the arrows can be customized

So how can I customise this?

Thanks in advance!

Hi,
You can use the OutputParameterInfo.setArrowSymbol() method in order to customize the arrow symbol.

Can I pass unicode characters to setArrowSymbol (for example the codes of Wingdings font)?

Yes, for instance:

        outputParameterInfos[0].setArrowSymbol((char) 9757); 

See more available symbols:
https://www.alanwood.net/demos/wingdings.html
Note that you can use symbols from strategies as well:
https://www.dukascopy.com/wiki/#Chart_object_catalog/Symbol

I have one more question about customize ARROW_SYMBOL_UP and ARROW_SYMBOL_DOWN.

How can I change size of such arrow (symbol)?

Support please tell me if it is possible to change size of arrow in indicator? (when I use OutputParameterInfo.DrawingStyle.ARROW_SYMBOL_DOWN or OutputParameterInfo.DrawingStyle.ARROW_SYMBOL_UP).

If No please tell me what you understand by:


How can I use symbols form strategies in indicator? (so in this option I will be able to change size of such symbol)

No, it is not possible to change arrow size from indicator.
A convenient option is to draw the arrows from a strategy. Strategy would calculate desired indicator values and draw chart objects based on indicator results.
Another option is to draw from indicator using IDrawingIndicator interface.

OK thanks for your answer.

I think that in the future it will be useful if you add possibilities to change size of arrow in indicators.