MQL5 ReferenceStandard LibraryPanels and DialogsCButtonOnSetFont OnSetFont The virtual handler of control "SetFont" (change of the OBJPROP_FONT property) event. virtual bool OnSetFont() Return Value true - event processed, otherwise - false. OnSetColorBorder OnSetFontSize CreatePressedLockingOnSetTextOnSetColorOnSetColorBackgroundOnSetColorBorderOnSetFontOnSetFontSizeOnCreateOnShowOnHideOnMoveOnResizeOnMouseDownOnMouseUp