Passing a Brush as a Parameter

[JerryWar]

If I am using multiple time frames and my code is structured to call a general Main routine
which is passed different parameters based on BarsInProgress. How can you ever pass it directly a Brush ? As I understand it the Receiving Brush in the routine needs to be frozen before being used in a Draw routine, and if you do that, on the second call you are trying to write to something that is Frozen from the first pass. Or do you not have to Freeze it because if it is called with a frozen parameter the Brush within the routine simply inherits the attributes?

Am I missing something here ? What is the explanation ?

Thanks
Jerry

[NinjaTrader_ChelseaB]

Hello Jerry,

If you are doing custom rendering, freeze the brush after you create it. In OnRenderTargetChanged() recreate the brush and refreeze it.

Below is a link to an example that demonstrates.

http://ninjatrader.com/support/forum/showthread.php?p=461249#post461249

If you are not doing custom rendering in OnRender(), don't worry about freezing the brush. Whatever you are passing the brush to will have its own OnRender() and will freeze the brush itself when it needs to.

You can pass a brush object to an indicator by creating a NinjaScript public property for it. The NinjaTrader generated code will automatically create additional overload methods to call the indicator with that as a parameter.

If you are making your own custom class, add addition overload methods for each of the different parameter combinations you would like.
Below is a link to an C# educational site that demonstrates.

https://www.dotnetperls.com/overload