MQL5 リファレンス標準ライブラリパネルとダイアログ CDialogOnClickCaption CreateOnEventCaptionAddCreateWhiteBorderCreateBackgroundCreateCaptionCreateButtonCloseCreateClientAreaOnClickCaptionOnClickButtonCloseClientAreaVisibleClientAreaLeftClientAreaTopClientAreaRightClientAreaBottomClientAreaWidthClientAreaHeightOnDialogDragStartOnDialogDragProcessOnDialogDragEnd OnClickCaption 컨트롤 "ClickCaption" 내부 이벤트의 가상 핸들러. virtual bool OnClickCaption() Return Value 성공시 true, 아니면 false. CreateClientArea OnClickButtonClose