ReferencesMarket Analyzer Column

OnRender()

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Definition

Used to draw custom content to a Market Analyzer Column, such as a graph.

This method is called during the following conditions:

  • The Market Analyzer is scrolled
  • The user changes the Market Analyzer’s properties through the Properties menu
  • The Market Analyzer first loads (e.g. restoring from a workspace)
  • The height / width of the Market Analyzer window changes
  • A user re-sizes the content area by dragging the splitter between the columns

While similar to a Chart Indicator’s OnRender() method, the Market Analyzer Column uses the WPF Drawing Context class, rather than the SharpDX library used for chart rendering. Concepts between these two methods are guaranteed to be different.

Method Return Value

This method does not return a value.

Syntax

You must override the method in your Market Analyzer column with the following syntax:

protected override void OnRender(DrawingContext dc, System.Windows.Size renderSize) \{ \}

Method Parameters

ParameterDescription
dcThe drawing context for the column
renderSizeThe rendering size for the column

In order to force OnRender() to be called under a specific condition, call the OnPropertyChanged() method which will force the entire column to repaint. This approach should be used instead of calling OnRender() directly.

Examples

1protected override void OnRender(DrawingContext dc, System.Windows.Size renderSize)
2{
3   // Rendering logic for our Market Analyzer column
4}