DIfference between OnRender and OnRenderTargetChange

[ttodua]

in the example: https://ninjatrader.com/support/help...getchanged.htm

it is show how dxBrush is being created/descroyed in separate event handler.
It's a bit inconecnent while coding.

so, does the following way has any drawback (instead of doing like said in example):

...OnRender()
{
    SharpDX.Direct2D1.Brush dxBrush = brushColor.ToDxBrush(RenderTarget);
    RenderTarget.FillRectangle(new SharpDX.RectangleF(ChartPanel.X, ChartPanel.Y, ChartPanel.W, ChartPanel.H), dxBrush)
    dxBrush.Dispose();
    dxBrush = null;
}

I like this because everything is in one place.
is it worse then in the linked example?

[NinjaTrader_PatrickH]

Hello TazoTodua,

Thank you for your post.

It is fine to create and destroy them in the same OnRender() call. The idea behind the OnRenderTargetChanged example is to show how to do this when the SharpDx Brush may be set or called elsewhere as well.

Actually creating and destroying in the same OnRender() call is more desirable if there is no need to set the Brush anywhere else.

Please let me know if you have any questions.