CCheckGroup

CCheckGroup 是 CheckGroup 复合控件之中的类 (含依赖控件)。

描述

CCheckGroup 可供用户创建显示并编辑标志的控件。

声明

   class CCheckGroup : public CWndClient

标称库文件

   #include <Controls\CheckGroup.mqh>

继承体系 CObject CWnd CWndContainer CWndClient CCheckGroup

下面提供的代码的结果：

类方法

创建
创建	创建控件
图表事件处理器
OnEvent	所有图表事件的处理器
添加
AddItem	添加新项目
只读数据
数值	获取控件关联的值。
依赖控件
CreateButton	创建新的 CCheckBox 控件。
依赖控件事件处理器
OnVScrollShow	VScroll 依赖控件的 "显示" 事件处理器 (虚函数)
OnVScrollHide	VScroll 依赖控件的 "隐藏" 事件处理器 (虚函数)
OnScrollLineDown	VScroll 依赖控件的 "滚动条向上" 事件处理器 (虚函数)
OnScrollLineUp	VScroll 依赖控件的 "滚动条向下" 事件处理器 (虚函数)
OnChangeItem	VScroll 依赖控件的 "项目改变" 事件处理器 (虚函数)
重绘
重绘	重绘控件组
RowState	设置指定项目的状态

方法继承自类 CObject Prev, Prev, Next, Next, Type, Compare
方法继承自类 CWnd Name, ControlsTotal, Control, Rect, Left, Left, Top, Top, Right, Right, Bottom, Bottom, Width, Width, Height, Height, Size, Size, Size, Contains, Contains, Alignment, Align, Id, IsEnabled, IsVisible, Visible, IsActive, Activate, Deactivate, StateFlags, StateFlags, StateFlagsSet, StateFlagsReset, PropFlags, PropFlags, PropFlagsSet, PropFlagsReset, MouseX, MouseX, MouseY, MouseY, MouseFlags, MouseFlags, MouseFocusKill, BringToTop
方法继承自类 CWndContainer OnMouseEvent, ControlsTotal, Control, ControlFind, MouseFocusKill, Add, Add, Delete, Delete, Move, Move, Shift, Enable, Disable, Hide
方法继承自类 CWndClient ColorBackground, ColorBorder, BorderType, VScrolled, VScrolled, HScrolled, HScrolled, Id

创建复选框组控制面板的示例：

//+------------------------------------------------------------------+

//|                                           ControlsCheckGroup.mq5 |

//|                        Copyright 2017, MetaQuotes Software Corp. |

//|                                             https://www.mql5.com |

//+------------------------------------------------------------------+

#property copyright "Copyright 2017, MetaQuotes Software Corp."

#property link      "https://www.mql5.com"

#property version   "1.00"

#property description "Control Panels and Dialogs. Demonstration class CCheckGroup"

#include <Controls\Dialog.mqh>

#include <Controls\CheckGroup.mqh>

//+------------------------------------------------------------------+

//| defines                                                          |

//+------------------------------------------------------------------+

//--- indents and gaps

#define INDENT_LEFT                         (11)      // indent from left (with allowance for border width)

#define INDENT_TOP                          (11)      // indent from top (with allowance for border width)

#define INDENT_RIGHT                        (11)      // indent from right (with allowance for border width)

#define INDENT_BOTTOM                       (11)      // indent from bottom (with allowance for border width)

#define CONTROLS_GAP_X                      (5)       // gap by X coordinate

#define CONTROLS_GAP_Y                      (5)       // gap by Y coordinate

//--- for buttons

#define BUTTON_WIDTH                        (100)     // size by X coordinate

#define BUTTON_HEIGHT                       (20)      // size by Y coordinate

//--- for the indication area

#define EDIT_HEIGHT                         (20)      // size by Y coordinate

//--- for group controls

#define GROUP_WIDTH                         (150)     // size by X coordinate

#define LIST_HEIGHT                         (179)     // size by Y coordinate

#define RADIO_HEIGHT                        (56)      // size by Y coordinate

#define CHECK_HEIGHT                        (93)      // size by Y coordinate

//+------------------------------------------------------------------+

//| Class CControlsDialog                                            |

//| Usage: main dialog of the Controls application                   |

//+------------------------------------------------------------------+

class CControlsDialog : public CAppDialog

  {

private:

   CCheckGroup       m_check_group;                   // CCheckGroup object



public:

                     CControlsDialog(void);

                    ~CControlsDialog(void);

   //--- create

   virtual bool      Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2);

   //--- chart event handler

   virtual bool      OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam);



protected:

   //--- create dependent controls

   bool              CreateCheckGroup(void);

   //--- handlers of the dependent controls events

   void              OnChangeCheckGroup(void);

  };

//+------------------------------------------------------------------+

//| Event Handling                                                   |

//+------------------------------------------------------------------+

EVENT_MAP_BEGIN(CControlsDialog)

ON_EVENT(ON_CHANGE,m_check_group,OnChangeCheckGroup)

EVENT_MAP_END(CAppDialog)

//+------------------------------------------------------------------+

//| Constructor                                                      |

//+------------------------------------------------------------------+

CControlsDialog::CControlsDialog(void)

  {

  }

//+------------------------------------------------------------------+

//| Destructor                                                       |

//+------------------------------------------------------------------+

CControlsDialog::~CControlsDialog(void)

  {

  }

//+------------------------------------------------------------------+

//| Create                                                           |

//+------------------------------------------------------------------+

bool CControlsDialog::Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2)

  {

   if(!CAppDialog::Create(chart,name,subwin,x1,y1,x2,y2))

      return(false);

//--- create dependent controls

   if(!CreateCheckGroup())

      return(false);

//--- succeed

   return(true);

  }

//+------------------------------------------------------------------+

//| Create the "CheckGroup" element                                  |

//+------------------------------------------------------------------+

bool CControlsDialog::CreateCheckGroup(void)

  {

//--- coordinates

   int x1=INDENT_LEFT;

   int y1=INDENT_TOP+(EDIT_HEIGHT+CONTROLS_GAP_Y)+

          (BUTTON_HEIGHT+CONTROLS_GAP_Y)+

          (EDIT_HEIGHT+CONTROLS_GAP_Y)+

          (EDIT_HEIGHT+CONTROLS_GAP_Y)+

          (RADIO_HEIGHT+CONTROLS_GAP_Y);

   int x2=x1+GROUP_WIDTH;

   int y2=y1+CHECK_HEIGHT;

//--- create

   if(!m_check_group.Create(m_chart_id,m_name+"CheckGroup",m_subwin,x1,y1,x2,y2))

      return(false);

   if(!Add(m_check_group))

      return(false);

//--- fill out with strings

   for(int i=0;i<5;i++)

      if(!m_check_group.AddItem("Item "+IntegerToString(i),1<<i))

         return(false);

   m_check_group.Check(0,1<<0);

   m_check_group.Check(2,1<<2);

   Comment(__FUNCTION__+" : Value="+IntegerToString(m_check_group.Value()));

//--- succeed

   return(true);

  }

//+------------------------------------------------------------------+

//| Event handler                                                    |

//+------------------------------------------------------------------+

void CControlsDialog::OnChangeCheckGroup(void)

  {

   Comment(__FUNCTION__+" : Value="+IntegerToString(m_check_group.Value()));

  }

//+------------------------------------------------------------------+

//| Global Variables                                                 |

//+------------------------------------------------------------------+

CControlsDialog ExtDialog;

//+------------------------------------------------------------------+

//| Expert initialization function                                   |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- create application dialog

   if(!ExtDialog.Create(ChartID(),"Controls",0,40,40,380,344))

      return(INIT_FAILED);

//--- run application

   ExtDialog.Run();

//--- succeed

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Expert deinitialization function                                 |

//+------------------------------------------------------------------+

void OnDeinit(const int reason)

  {

//---

   Comment("");

//--- destroy dialog

   ExtDialog.Destroy(reason);

  }

//+------------------------------------------------------------------+

//| Expert chart event function                                      |

//+------------------------------------------------------------------+

void OnChartEvent(const int id,         // event ID  

                  const long& lparam,   // event parameter of the long type

                  const double& dparam, // event parameter of the double type

                  const string& sparam) // event parameter of the string type

  {

   ExtDialog.ChartEvent(id,lparam,dparam,sparam);

  }