MQL5参考标准程序库面板和对话框CDialogCreateWhiteBorder CreateOnEventCaptionAddCreateWhiteBorderCreateBackgroundCreateCaptionCreateButtonCloseCreateClientAreaOnClickCaptionOnClickButtonCloseClientAreaVisibleClientAreaLeftClientAreaTopClientAreaRightClientAreaBottomClientAreaWidthClientAreaHeightOnDialogDragStartOnDialogDragProcessOnDialogDragEnd CreateWhiteBorder 创建依赖控件 (白边) virtual bool CreateWhiteBorder() 返回值 true 如果成功, 否则 false。 Add CreateBackground