MQL5 ReferenceStandard LibraryPanels and DialogsCWndObjOnObjectDelete OnEventTextColorColorBackgroundColorBorderFontFontSizeZOrderOnObjectCreateOnObjectChangeOnObjectDeleteOnObjectDragOnSetTextOnSetColorOnSetColorBackgroundOnSetFontOnSetFontSizeOnSetZOrderOnDestroyOnChange OnObjectDelete The virtual handler of chart object CHARTEVENT_OBJECT_DELETE event. virtual bool OnObjectDelete() Return Value true - event processed, otherwise - false. OnObjectChange OnObjectDrag