Can you attach an EA on an offline chart?

Quoting zznbrm

Disliked

If the offline chart is receiving updates (ie, ticks) via some other process (script, EA, indicator), then yes, an EA can be attached and can behave as if it was on a regular online chart.

This is very common with non-standard Time period, Range Bar, Renko, Volume, Tick, Index, and Basket charts - which all use offline charts.

Just slap the EA on the applicable offline chart and, as long as the offline chart is being fed new ticks, your EA should behave as if it was on a regular online chart.

Ignored

Quoting mikegriz

Disliked

Now I can attach an EA to my offline chart (it's a simple tick chart), but the EA does nothing since it's not really getting new ticks (i.e. the Start function in the EA never runs), the data is just being posted there by the data logged from a live chart.

Ignored

//+------------------------------------------------------------------+
//| hsUpdateChartWindow                                              |
//+------------------------------------------------------------------+
void hsUpdateChartWindow( string strSymbol, int intTF ) 
{
   int intWindow = WindowHandle( strSymbol, intTF );
   static int intMT4MsgID = 0;
 
   if( intWindow > 0 ) 
   {
      // Send update (refresh) command to offline chart
      PostMessageA( intWindow, WM_COMMAND, 33324, 0 );
 
      // Send simulated tick to offline chart
      if ( intMT4MsgID == 0 )
         intMT4MsgID = RegisterWindowMessageA("MetaTrader4_Internal_Message");         
 
      PostMessageA( intWindow, intMT4MsgID, 2, 1 );      
   }
}

Quoting zznbrm

Disliked

You need to "notify" the offline chart of an incoming tick. In your offline chart generator, do something like this after you update the bar data each time:

[code]//+------------------------------------------------------------------+
//| hsUpdateChartWindow |
//+------------------------------------------------------------------+
void hsUpdateChartWindow( string strSymbol, int intTF )
{
int intWindow = WindowHandle( strSymbol, intTF );
static int intMT4MsgID = 0;

if( intWindow > 0 )...

Ignored