MQL4 Reference Chart Operations WindowFind
Returns the window index containing this specified indicator.
int WindowFind( string name // name );
Parameters
name
[in] Indicator short name.
Returned value
If indicator with name was found, the function returns the window index containing this specified indicator, otherwise it returns -1.
Note
WindowFind() returns -1 if custom indicator searches itself when init() function works.
Example:
int win_idx=WindowFind("MACD(12,26,9)");