A Gold Pass Member asked how he would go about drawing vertical lines, 26 bars left and 26 bars right from a bar chosen by a mouse click.
Such an analysis technique needs three elements:
1) To be able to detect when a bar is clicked on the chart
2) To clear vertical lines drawn when a previous bar was clicked
3) To create and draw vertical line drawing objects
In this tutorial, rather than hard-coding the number of bars before and after the bar clicked, the number is determined by a user input (Gap) as are the weight and thickness of the vertical lines.
The colors of the lines are hard-coded but could easily be changed (see the tutorial video).
Technical lessons include:
- Using the ChartingHost class to determine when a bar is clicked
- Creating BNPoints for the bars where we draw Vertical lines
- Clearing and adding VerticalLines to the chart
- Modifying the weight and style of the vertical lines
Explanation of tutorial 194
The tutorial is NOT compatible with MultiCharts.
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