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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:

ControlsCheckBox

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)

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);
  }


更新: 2017.03.30