MQL4 Reference 
Object functions ObjectFind
| int ObjectFind( |
string name) |
Search for an object having the specified name. The function returns index of the windows that contains the object to be found. If it fails, the returned value will be -1.
To get the detailed error information, one has to call the GetLastError() function.
The chart sub-windows (if there are sub-windows with indicators in the chart) are numbered starting from 1. The chart main window always exists and has the 0 index.
Parameters:
| name |
- |
Object name to search for. |
Sample:
if(ObjectFind("line_object2")!=win_idx) return(0);
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