MQL5 ReferenceStandard LibraryPanels and DialogsCButtonOnResize CreatePressedLockingOnSetTextOnSetColorOnSetColorBackgroundOnSetColorBorderOnSetFontOnSetFontSizeOnCreateOnShowOnHideOnMoveOnResizeOnMouseDownOnMouseUp OnResize The virtual handler of control "Resize" internal event. virtual bool OnResize() Return Value true - event processed, otherwise - false. OnMove OnMouseDown