Hi,
I use several charts for the same instrument. (1min, 3 min, ticks and 1 hour). How can I specify the specific chart for which I want to add an annotation to?

e.g that I want to add a vertical line only on my 1 min chart?

Thanks

Sorry, I should clarify: I want to add the annotations automatically via code. Not adding them manually with my mouse into the charts!

Hi jamesadk

I do a similar thing using methods provided by IContext and IChart.

To get a list of all open charts:

Set<IChart> openCharts = context.getCharts();

To identify the particular chart you want, I think you will need to check the instrument &/or period , e.g.

Instrument instrument = chart.getInstrument();
Period period = getSelectedPeriod()
if ( instrument.equals(desiredInstrument) && period.equals(desiredPeriod) ) {
    ...
}

Once you've identified the desired chart, you can use methods in IChart and IChartObjectFactory to draw, e.g.

IChartObjectFactory factory = chart.getChartObjectFactory();
IVerticalLineChartObject vLine = factory.createVerticalLine();
...

You may also find it useful to get the chart last selected by the mouse:

IChart activeChart = context.getLastActiveChart();

There may be a better approach, but this worked for me.

Cheers
Tony