MQL5 リファレンス標準ライブラリパネルとダイアログ CDialogCreateBackground CreateOnEventCaptionAddCreateWhiteBorderCreateBackgroundCreateCaptionCreateButtonCloseCreateClientAreaOnClickCaptionOnClickButtonCloseClientAreaVisibleClientAreaLeftClientAreaTopClientAreaRightClientAreaBottomClientAreaWidthClientAreaHeightOnDialogDragStartOnDialogDragProcessOnDialogDragEnd CreateBackground 종속 제어를 생성합니다(배경). virtual bool CreateBackground() Return Value 성공시 true, 아니면 false. CreateWhiteBorder CreateCaption