change symbol /change timeframe indicator

Hi,


can any one please give me sample function to change symbol and change timeframe when user click on the button.

example:

- i made 2 button eurusd, gbpusd and 2 button m1, m2 , when i click, it should change...

You will need to call ChartSetSymbolPeriod from the OnChartEvent function
[Deleted]
Stuart Browne:
You will need to call ChartSetSymbolPeriod from the OnChartEvent function
Thank you.