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DoEasy. 控件（第 6 部分）：面板控件，自动调整容器大小来适应内部内容·进阶篇

（2/3）· 当多个子对象先后激活 Dock，面板若逐次重绘便会闪得眼睛发酸，本篇给出合并刷新的解法

含代码示例偏理论第 2/3 篇

在 MT5 里叠放 WinForms 控件时，不少人顺手给每个子对象单独置 Dock，却没意识到面板每响应一次就重绘一遍，整块界面像抽搐。把附着对象的属性变更攒成一批再让容器算一次尺寸，才是顺滑的底子。

本章目录

画布控件排序枚举与品种属性接口的底层定义
把隔夜费拆到每一天去读
敏感度与周日库存费的阈值监控接口
抓出周末掉期费用的异动
周二周三库存费异动的监控接口
把周三周四掉期变动写进类里

◍ 画布控件排序枚举与品种属性接口的底层定义

在 MT5 的自定义图形库里，画布元素（Canvas Element）支持按多种布局属性排序。下面这组枚举值直接暴露了控件自动排版时的判断维度：既能按是否随内容自适应尺寸（AUTOSIZE）、按边缘绑定容器的停靠模式（DOCK_MODE）排，也能精细到控件之间与控件内部的上下左右边距（MARGIN / PADDING 六个方向）。字符串类属性排序从 FIRST_CANV_ELEMENT_STR_PROP 基准开始，例如按元素对象名（NAME_OBJ）或绑定的图形资源名（NAME_RES）归类。这类定义决定了你后续用 CCanvas 批量重排面板时，能否用一行排序调用替代手算坐标。品种接口层则给出了可直接取数的方法：SymbolSwapRatio(ENUM_DAY_OF_WEEK day) 返回指定星期几的掉期比例，GetSwapRatioDescription() 拿到对应文字说明；PriceSensitivity() 内联返回 SYMBOL_PROP_PRICE_SENSITIVITY 属性值。外汇与贵金属品种受掉期与敏感度影响明显，持仓过夜成本可能随星期跳变，属高风险变量。把上面两段代码贴进 MQ5 头文件编译，能在『导航器—类视图』里直接看到这些枚举与方法的符号，验证定义是否生效。

MQL5 / C++

SORT_BY_CANV_ELEMENT_AUTOSIZE,                 class=class="str">"cmt">// Sort by the flag of the element auto resizing depending on the content
SORT_BY_CANV_ELEMENT_DOCK_MODE,                class=class="str">"cmt">// Sort by mode of binding control borders to the container
SORT_BY_CANV_ELEMENT_MARGIN_TOP,               class=class="str">"cmt">// Sort by top margin between the fields of this and another control
SORT_BY_CANV_ELEMENT_MARGIN_BOTTOM,            class=class="str">"cmt">// Sort by bottom margin between the fields of this and another control
SORT_BY_CANV_ELEMENT_MARGIN_LEFT,              class=class="str">"cmt">// Sort by left margin between the fields of this and another control
SORT_BY_CANV_ELEMENT_MARGIN_RIGHT,             class=class="str">"cmt">// Sort by right margin between the fields of this and another control
SORT_BY_CANV_ELEMENT_PADDING_TOP,              class=class="str">"cmt">// Sort by top margin inside the control
SORT_BY_CANV_ELEMENT_PADDING_BOTTOM,           class=class="str">"cmt">// Sort by bottom margin inside the control
SORT_BY_CANV_ELEMENT_PADDING_LEFT,             class=class="str">"cmt">// Sort by left margin inside the control
SORT_BY_CANV_ELEMENT_PADDING_RIGHT,            class=class="str">"cmt">// Sort by right margin inside the control
class=class="str">"cmt">//--- Sort by real properties
class=class="str">"cmt">//--- Sort by class="type">class="kw">string properties
  SORT_BY_CANV_ELEMENT_NAME_OBJ = FIRST_CANV_ELEMENT_STR_PROP,class=class="str">"cmt">// Sort by an element object name
  SORT_BY_CANV_ELEMENT_NAME_RES,                            class=class="str">"cmt">// Sort by the graphical resource name
  };
class=class="str">"cmt">//+------------------------------------------------------------------+
  class="type">class="kw">double              SymbolMarginHedged(class="type">void)              class="kw">const;
  class="type">class="kw">double              SymbolSwapRatio(ENUM_DAY_OF_WEEK day) class="kw">const;
  class="type">bool                SymbolMarginLong(class="type">void);
  class="type">class="kw">string              GetSectorDescription(class="type">void)            class="kw">const;
  class="type">class="kw">string              GetIndustryDescription(class="type">void)          class="kw">const;
  class="type">class="kw">string              GetSwapRatioDescription(class="kw">const ENUM_DAY_OF_WEEK day) class="kw">const;
  class="type">class="kw">double              PriceSensitivity(class="type">void)                class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_PRICE_SENSITIVITY); }

把隔夜费拆到每一天去读

MT5 里 SYMBOL_PROP_SWAP_* 这组属性把一周七天的掉期系数分开暴露，写类的时候用 const 方法包一层就能随时取某天的 SwapRatio。下面这七个函数各自对应周日到周六，返回的是该品种当天的掉期比率，不是点值。 double SwapRatioSunday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_SUNDAY); } // 取周日掉期比率，const 保证不修改对象状态 double SwapRatioMonday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_MONDAY); } // 取周一掉期比率 double SwapRatioTuesday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_TUESDAY); } // 取周二掉期比率 double SwapRatioWednesday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_WEDNESDAY); } // 取周三掉期比率，多数品种周三会乘 3 倍计入跨周末仓息 double SwapRatioThursday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_THURSDAY); } // 取周四掉期比率 double SwapRatioFriday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_FRIDAY); } // 取周五掉期比率 double SwapRatioSaturday(void) const { return this.GetProperty(SYMBOL_PROP_SWAP_SATURDAY); } // 取周六掉期比率，通常返回 0 还有个未在此展开的 SwapRatioDay(ENUM_DAY_OF_WEEK day)，是按枚举直接查某天系数的统一入口，比写七个独立函数更适合循环里调用。别把正态当圣经实际跑 MT5 终端按 F4 把上面方法塞进 CSymbol 派生类，用 Print(SymbolInfoDouble(_Symbol,SYMBOL_PROP_SWAP_WEDNESDAY)) 对照看，黄金 XAUUSD 周三系数常常是正数而欧元系多为负，持仓过周三成本倾向明显分化。外汇和贵金属杠杆交易高风险，掉期只是成本一侧，别单凭它决定留仓。

MQL5 / C++

class="type">class="kw">double SwapRatioSunday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_SUNDAY); }
class="type">class="kw">double SwapRatioMonday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_MONDAY); }
class="type">class="kw">double SwapRatioTuesday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_TUESDAY); }
class="type">class="kw">double SwapRatioWednesday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_WEDNESDAY); }
class="type">class="kw">double SwapRatioThursday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_THURSDAY); }
class="type">class="kw">double SwapRatioFriday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_FRIDAY); }
class="type">class="kw">double SwapRatioSaturday(class="type">void) class="kw">const { class="kw">return this.GetProperty(SYMBOL_PROP_SWAP_SATURDAY); }
class="type">class="kw">double SwapRatioDay(class="kw">const ENUM_DAY_OF_WEEK day) class="kw">const;
class="type">class="kw">double NormalizedPrice(class="kw">const class="type">class="kw">double price) class="kw">const;

「敏感度与周日库存费的阈值监控接口」

在 MT5 的 symbol 属性监控类里，价格敏感度（SYMBOL_PROP_PRICE_SENSITIVITY）和周日库存费比例（SYMBOL_PROP_SWAP_SUNDAY）都提供了一组对称的 setter/getter，用来设定「增量超阈、减量超阈、绝对水平」三类控制值。调用时统一用 ::fabs(value) 包裹入参，意味着无论你传正还是负，底层都按绝对值处理阈值，避免方向写反导致监控失效。 IsIncreasedPriceSensitivity() 与 IsDecreasedPriceSensitivity() 直接返回布尔标志，可在 EA 的 OnTick 里做条件分支：当敏感度向上突破时倾向减仓，向下突破时倾向观望。外汇与贵金属杠杆高，库存费与敏感度异动可能放大隔夜风险，需结合实盘验证。下面这段是接口原貌，逐行对应上述逻辑：SetControlPriceSensitivityInc 设敏感度增量阈值；SetControlPriceSensitivityDec 设减量阈值；SetControlPriceSensitivityLevel 设水平线；GetValueChangedPriceSensitivity 取实际变动值；两个 Is 函数读标志位。周日库存费三件套结构完全一致，只是属性换成 SYMBOL_PROP_SWAP_SUNDAY。

MQL5 / C++

class=class="str">"cmt">//--- getting the flag of the option/warrant sensitivity change exceeding the(class="num">5) increase, (class="num">6) decrease value
class="type">void                SetControlPriceSensitivityInc(class="kw">const class="type">class="kw">double value)        { this.SetControlledValueINC(SYMBOL_PROP_PRICE_SENSITIVITY,::fabs(value));      }
class="type">void                SetControlPriceSensitivityDec(class="kw">const class="type">class="kw">double value)        { this.SetControlledValueDEC(SYMBOL_PROP_PRICE_SENSITIVITY,::fabs(value));      }
class="type">void                SetControlPriceSensitivityLevel(class="kw">const class="type">class="kw">double value)      { this.SetControlledValueLEVEL(SYMBOL_PROP_PRICE_SENSITIVITY,::fabs(value));    }
class="type">class="kw">double              GetValueChangedPriceSensitivity(class="type">void)                    class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_PRICE_SENSITIVITY);          }
class="type">bool                IsIncreasedPriceSensitivity(class="type">void)                        class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_PRICE_SENSITIVITY);         }
class="type">bool                IsDecreasedPriceSensitivity(class="type">void)                        class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_PRICE_SENSITIVITY);         }
class=class="str">"cmt">//--- Swap accrual ratio
class=class="str">"cmt">//--- setting the controlled Sunday swap accrual ratio(class="num">1) increase, (class="num">2) decrease and(class="num">3) control levels
class=class="str">"cmt">//--- get(class="num">4) the swap accrual ratio change(Sunday),
class=class="str">"cmt">//--- get the swap accrual ratio change for Sunday exceeding the(class="num">5) increase and(class="num">6) decrease values
class="type">void                SetControlSwapSundayInc(class="kw">const class="type">class="kw">double value)             { this.SetControlledValueINC(SYMBOL_PROP_SWAP_SUNDAY,::fabs(value));            }
class="type">void                SetControlSwapSundayDec(class="kw">const class="type">class="kw">double value)             { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_SUNDAY,::fabs(value));            }
class="type">void                SetControlSwapSundayLevel(class="kw">const class="type">class="kw">double value)           { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_SUNDAY,::fabs(value));          }

◍ 抓出周末掉期费用的异动

做黄金和外汇的持仓成本，常被周日、周一的 swap 值悄悄改掉。经纪商在周末调整掉期费率时，MT5 的 SYMBOL_PROP_SWAP_SUNDAY / SWAP_MONDAY 属性会发生变化，但终端不会弹窗提醒你。下面这段类方法直接封装了「读取变化值」和「判断增减方向」的逻辑。GetValueChangedSwapSunday 返回周日掉期相较基准的变动量；IsIncreasedSwapSunday 与 IsDecreasedSwapSunday 分别用内部 flag 告诉你这次变动是上调还是下调。 double GetValueChangedSwapSunday(void) const { return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_SUNDAY); } bool IsIncreasedSwapSunday(void) const { return (bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_SUNDAY); } bool IsDecreasedSwapSunday(void) const { return (bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_SUNDAY); } 周一掉期同样有控制接口。SetControlSwapMondayInc / Dec / Level 三个方法接收double参数，内部用 ::fabs 取绝对值后写入监控阈值，分别对应「增幅超多少报警」「降幅超多少报警」「绝对水平线」。 void SetControlSwapMondayInc(const double value) { this.SetControlledValueINC(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); } void SetControlSwapMondayDec(const double value) { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); } void SetControlSwapMondayLevel(const double value) { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); } double GetValueChangedSwapMonday(void) const { return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_MONDAY); } bool IsIncreasedSwapMonday(void) const { return (bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_MONDAY); } bool IsDecreasedSwapMonday(void) const { return (bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_MONDAY); } 在 MT5 里把这套方法挂上定时器，每 30 秒轮询一次 GetValueChangedSwapMonday，当返回非零且 IsIncreasedSwapMonday 为真，就说明周一掉期可能刚被经纪商上调。外汇与贵金属杠杆品种波动大、隔夜费调整频繁，这类异动仅作成本预警，不构成方向判断。

MQL5 / C++

class="type">class="kw">double GetValueChangedSwapSunday(class="type">void) class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_SUNDAY); }
class="type">bool IsIncreasedSwapSunday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_SUNDAY); }
class="type">bool IsDecreasedSwapSunday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_SUNDAY); }
class="type">void SetControlSwapMondayInc(class="kw">const class="type">class="kw">double value) { this.SetControlledValueINC(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); }
class="type">void SetControlSwapMondayDec(class="kw">const class="type">class="kw">double value) { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); }
class="type">void SetControlSwapMondayLevel(class="kw">const class="type">class="kw">double value) { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_MONDAY,::fabs(value)); }
class="type">class="kw">double GetValueChangedSwapMonday(class="type">void) class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_MONDAY); }
class="type">bool IsIncreasedSwapMonday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_MONDAY); }
class="type">bool IsDecreasedSwapMonday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_MONDAY); }

周二周三库存费异动的监控接口

做跨日持仓的贵金属或外汇头寸，周二、周三的 swap 调整往往藏着经纪商改规则的信号。下面这组方法把 SYMBOL_PROP_SWAP_TUESDAY / WEDNESDAY 的增减阈值和触发电平直接封装进类里，方便盯盘脚本自动比对。代码里所有传入值都过了 ::fabs，意味着你填正数负数都行，内部只认绝对值。SetControlSwapTuesdayInc 设定周二库存费「相对基准」的上浮敏感幅度，超过就置 INC 标志；SetControlSwapTuesdayDec 同理管下探。 GetValueChangedSwapTuesday 返回实际变动量，IsIncreasedSwapTuesday / IsDecreasedSwapTuesday 直接给布尔，省得你在外层再写判断。周三那一组接口命名结构完全一致，只是把枚举换成 SYMBOL_PROP_SWAP_WEDNESDAY。实盘接进去后，可以在 OnTick 里轮询 IsIncreasedSwapTuesday()，一旦返回 true 就推小布告警——外汇和贵金属杠杆品种库存费跳变可能预示流动性切换，属高风险事件，别当成普通噪声。

MQL5 / C++

  class=class="str">"cmt">//--- get(class="num">4) the swap accrual ratio change(Tuesday),
  class=class="str">"cmt">//--- get the swap accrual ratio change for Tuesday exceeding the(class="num">5) increase and(class="num">6) decrease values
  class="type">void                SetControlSwapTuesdayInc(class="kw">const class="type">class="kw">double value)          { this.SetControlledValueINC(SYMBOL_PROP_SWAP_TUESDAY,::fabs(value));           }
  class="type">void                SetControlSwapTuesdayDec(class="kw">const class="type">class="kw">double value)          { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_TUESDAY,::fabs(value));           }
  class="type">void                SetControlSwapTuesdayLevel(class="kw">const class="type">class="kw">double value)        { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_TUESDAY,::fabs(value));         }
  class="type">class="kw">double              GetValueChangedSwapTuesday(class="type">void)                      class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_TUESDAY);              }
  class="type">bool                IsIncreasedSwapTuesday(class="type">void)                          class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_TUESDAY);             }
  class="type">bool                IsDecreasedSwapTuesday(class="type">void)                          class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_TUESDAY);             }
  class=class="str">"cmt">//--- setting the controlled Wednesday swap accrual ratio(class="num">1) increase, (class="num">2) decrease and(class="num">3) control levels
  class=class="str">"cmt">//--- get(class="num">4) the swap accrual ratio change(Wednesday),
  class=class="str">"cmt">//--- get the swap accrual ratio change for Wednesday exceeding the(class="num">5) increase and(class="num">6) decrease values
  class="type">void                SetControlSwapWednesdayInc(class="kw">const class="type">class="kw">double value)        { this.SetControlledValueINC(SYMBOL_PROP_SWAP_WEDNESDAY,::fabs(value));         }
  class="type">void                SetControlSwapWednesdayDec(class="kw">const class="type">class="kw">double value)        { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_WEDNESDAY,::fabs(value));         }
  class="type">void                SetControlSwapWednesdayLevel(class="kw">const class="type">class="kw">double value)      { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_WEDNESDAY,::fabs(value));       }

「把周三周四掉期变动写进类里」

延续前面的符号属性监控思路，这里把周三、周四的掉期倍数变动也封装成同一套读写接口。外汇与贵金属持仓过夜成本受经纪商调仓影响明显，周三往往叠加两倍掉期，周四部分品种也会出现单独倍率，属于高风险下的隐性成本点。下面这段直接挂在之前定义的符号监控类里即可。GetValueChangedSwapWednesday 返回 SYMBOL_PROP_SWAP_WEDNESDAY 的相对变动值，IsIncreasedSwapWednesday / IsDecreasedSwapWednesday 则分别读出该属性相较基准是上调还是下调的布尔标记。周四部分对称地提供了 SetControlSwapThursdayInc、SetControlSwapThursdayDec、SetControlSwapThursdayLevel 三个写入函数，内部统一用 ::fabs(value) 取绝对值避免方向错设；读取端 GetValueChangedSwapThursday、IsIncreasedSwapThursday、IsDecreasedSwapThursday 逻辑与周三完全一致。实盘验证时，在 MT5 策略测试器外挂一个 Print(IsIncreasedSwapWednesday()) 的探针，就能在经纪商周末调参后第一时间看到周三掉期是否被拉高，从而调整波段持仓周期。

MQL5 / C++

class="type">class="kw">double GetValueChangedSwapWednesday(class="type">void) class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_WEDNESDAY); }
class="type">bool IsIncreasedSwapWednesday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_WEDNESDAY); }
class="type">bool IsDecreasedSwapWednesday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_WEDNESDAY); }
class=class="str">"cmt">//--- setting the controlled Thursday swap accrual ratio(class="num">1) increase, (class="num">2) decrease and(class="num">3) control levels
class=class="str">"cmt">//--- get(class="num">4) the swap accrual ratio change(Thursday),
class=class="str">"cmt">//--- get the swap accrual ratio change for Thursday exceeding the(class="num">5) increase and(class="num">6) decrease values
class="type">void SetControlSwapThursdayInc(class="kw">const class="type">class="kw">double value) { this.SetControlledValueINC(SYMBOL_PROP_SWAP_THURSDAY,::fabs(value)); }
class="type">void SetControlSwapThursdayDec(class="kw">const class="type">class="kw">double value) { this.SetControlledValueDEC(SYMBOL_PROP_SWAP_THURSDAY,::fabs(value)); }
class="type">void SetControlSwapThursdayLevel(class="kw">const class="type">class="kw">double value) { this.SetControlledValueLEVEL(SYMBOL_PROP_SWAP_THURSDAY,::fabs(value)); }
class="type">class="kw">double GetValueChangedSwapThursday(class="type">void) class="kw">const { class="kw">return this.GetPropDoubleChangedValue(SYMBOL_PROP_SWAP_THURSDAY); }
class="type">bool IsIncreasedSwapThursday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagINC(SYMBOL_PROP_SWAP_THURSDAY); }
class="type">bool IsDecreasedSwapThursday(class="type">void) class="kw">const { class="kw">return (class="type">bool)this.GetPropDoubleFlagDEC(SYMBOL_PROP_SWAP_THURSDAY); }
class=class="str">"cmt">//--- setting the controlled Friday swap accrual ratio(class="num">1) increase, (class="num">2) decrease and(class="num">3) control levels
class=class="str">"cmt">//--- get(class="num">4) the swap accrual ratio change(Friday),

让小布替你跑这套

这些诊断小布盯盘的 AIGC 已内置，打开对应品种页即可看到掉期按日拆分的利率，不必自己翻枚举常量。把重复劳动交给小布，你专注决策。

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DoEasy. 控件（第 6 部分）：面板控件，自动调整容器大小来适应内部内容·综合运用

常见问题

因为每个对象属性变化都触发一次容器重算与重绘，连续多次就会闪。原文用批处理把变更合并，末个对象落位后才统一调尺寸。

它们被加进品种对象的实数型属性枚举，并把枚举总数从 68 扩到对应值，同时映射为消息索引，保持与库统一概念一致。

这样所有图形对象拥有常规特性列表，后续可在终端内可视化搭建 EA 或指标的外壳 GUI，像 MS Visual Studio 那样拖拽呈现。

可以，品种页已内置 AIGC 诊断，把 SYMBOL_SWAP_* 系列值转成周日到周六的单倍、三倍或零掉期展示，省去手写读取代码。外汇贵金属杠杆高，利率细节影响持仓成本。

为了让新属性进入每个图形对象的通用特性列表，方便统一显示与后续可视化编辑，而不是散落在类变量里难以维护。

DoEasy. 控件（第 6 部分）：面板控件，自动调整容器大小来适应内部内容·进阶篇

◍ 画布控件排序枚举与品种属性接口的底层定义

把隔夜费拆到每一天去读

「敏感度与周日库存费的阈值监控接口」

◍ 抓出周末掉期费用的异动

周二周三库存费异动的监控接口

「把周三周四掉期变动写进类里」

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