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
Free Gold Pass download of the tutorial 194 code
This content is for members only. The tutorial is NOT compatible with MultiCharts.
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