mql5-skills/skills/mql5/references/docs/34-standardlibrary/3932-standardlibrary-controls-cscroll-cscrollonevent.md

OnEvent

Chart event handler.

virtual bool  OnEvent(
   const int      id,         // ID
   const long&    lparam,     // parameter
   const double&  dparam,     // parameter
   const string&  sparam      // parameter
   )

Parameters

id

[in]  Event ID.

lparam

[in]  Event parameter of long type passed by reference.

dparam

[in]  Event parameter of double type passed by reference.

sparam

[in]  Event parameter of string type passed by reference.

Return Value

true - event processed, otherwise - false.