CCheckBox

CCheckBox 是 CheckBox 复合控件之中的类。

描述

CCheckBox 控件显示一个勾选框, 以便用户选择一个真伪条件。

声明

   class CCheckBox : public CWndContainer

标称库文件

   #include <Controls\CheckBox.mqh>
继承体系   CObject       CWnd           CWndContainer               CCheckBox

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 所有图表事件的句柄
属性  
文本 获取/设置控件关联的文本标签
Color 获取/设置控件关联的文本标签颜色
状态  
Checked 获取/设置控件是否被选择的指示值
数据  
数值 获取/设置控件关联的值
依赖控件  
CreateButton 创建依赖控件 (按钮)
CreateLabel 创建依赖控件 (标签)
依赖控件事件处理器  
ClickButton "点击按钮" 事件处理器 (虚函数)
ClickLabel "点击标签" 事件处理器 (虚函数)
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 Destroy, OnMouseEvent, ControlsTotal, Control, ControlFind, MouseFocusKill, Add, Add, Delete, Delete, Move, Move, Shift, Id, Enable, Disable, Show, Hide

创建复选框控制面板的示例：

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

//|                                             ControlsCheckBox.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 CCheckBox"

#include <Controls\Dialog.mqh>

#include <Controls\CheckBox.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:

   CCheckBox         m_check_box1;                    // CCheckBox object

   CCheckBox         m_check_box2;                    // CCheckBox 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              CreateCheckBox1(void);

   bool              CreateCheckBox2(void);

   //--- handlers of the dependent controls events

   void              OnChangeCheckBox1(void);

   void              OnChangeCheckBox2(void);

  };

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

//| Event Handling                                                   |

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

EVENT_MAP_BEGIN(CControlsDialog)

ON_EVENT(ON_CHANGE,m_check_box1,OnChangeCheckBox1)

ON_EVENT(ON_CHANGE,m_check_box2,OnChangeCheckBox2)

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(!CreateCheckBox1())

      return(false);

   if(!CreateCheckBox2())

      return(false);

//--- succeed

   return(true);

  }

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

//| Create the "CheckBox" element                                    |

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

bool CControlsDialog::CreateCheckBox1(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+BUTTON_HEIGHT;

//--- create

   if(!m_check_box1.Create(m_chart_id,m_name+"CheckBox1",m_subwin,x1,y1,x2,y2))

      return(false);

   if(!m_check_box1.Text("CheckBox1"))

      return(false);

   if(!m_check_box1.Color(clrBlue))

      return(false);

   if(!Add(m_check_box1))

      return(false);

//--- succeed

   return(true);

  }

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

//| Create the "CheckBox" element                                    |

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

bool CControlsDialog::CreateCheckBox2(void)

  {

//--- coordinates

   int x1=INDENT_LEFT+GROUP_WIDTH+CONTROLS_GAP_X;

   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+BUTTON_HEIGHT;

//--- create

   if(!m_check_box2.Create(m_chart_id,m_name+"CheckBox2",m_subwin,x1,y1,x2,y2))

      return(false);

   if(!m_check_box2.Text("CheckBox2"))

      return(false);

   if(!m_check_box2.Color(clrBlue))

      return(false);

   if(!Add(m_check_box2))

      return(false);

   m_check_box2.Checked(true);

   Comment(__FUNCTION__+" : Checked="+IntegerToString(m_check_box2.Checked()));

//--- succeed

   return(true);

  }

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

//| Event handler                                                    |

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

void CControlsDialog::OnChangeCheckBox1(void)

  {

   Comment(__FUNCTION__+" : Checked="+IntegerToString(m_check_box1.Checked()));

  }

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

//| Event handler                                                    |

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

void CControlsDialog::OnChangeCheckBox2(void)

  {

   Comment(__FUNCTION__+" : Checked="+IntegerToString(m_check_box2.Checked()));

  }

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

//| Global Variables                                                 |

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

CControlsDialog ExtDialog;

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

//| Expert initialization function                                   |

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

int OnInit()

  {

//--- create application dialog

   if(!ExtDialog.Create(0,"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);

  }