MQL5参考标准程序库面板和对话框CDialogCreateButtonClose CreateOnEventCaptionAddCreateWhiteBorderCreateBackgroundCreateCaptionCreateButtonCloseCreateClientAreaOnClickCaptionOnClickButtonCloseClientAreaVisibleClientAreaLeftClientAreaTopClientAreaRightClientAreaBottomClientAreaWidthClientAreaHeightOnDialogDragStartOnDialogDragProcessOnDialogDragEnd CreateButtonClose 创建依赖控件 (关闭按钮) virtual bool CreateButtonClose() 返回值 true 如果成功, 否则 false。 CreateCaption CreateClientArea