CPicture
CPicture 是一个简单控件, 基于 "位图标签" 图表对象。
描述
CPicture 的目的在于创建简单的图形图像。
声明
class CPicture : public CWndObj标称库文件
#include <Controls\Picture.mqh>| 继承体系 CObject CWnd CWndObj CPicture |
下面提供的代码的结果：
类方法
| 创建 | |
|---|---|
| 创建 | 创建控件 |
| 图表对象属性 | |
| Border | 获取/设置图表对象的边框宽度 |
| BmpName | 获取/设置控件的位图文件名 |
| 内部事件 | |
| OnCreate | "创建" 事件处理器 |
| OnShow | "显示" 事件处理器 |
| OnHide | "隐藏" 事件处理器 |
| OnMove | "移动" 事件处理器 |
| OnChange | "修改" 事件处理器 |
| 方法继承自类 CObject Prev, Prev, Next, Next, Save, Load, Type, Compare |
|---|
| 方法继承自类 CWnd Destroy, OnMouseEvent, Name, ControlsTotal, Control, ControlFind, Rect, Left, Left, Top, Top, Right, Right, Bottom, Bottom, Width, Width, Height, Height, Size, Size, Size, Move, Move, Shift, Contains, Contains, Alignment, Align, Id, Id, IsEnabled, Enable, Disable, IsVisible, Visible, Show, Hide, 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 CWndObj OnEvent, Text, Text, Color, Color, ColorBackground, ColorBackground, ColorBorder, ColorBorder, Font, Font, FontSize, FontSize, ZOrder, ZOrder |
创建位图标签面板的示例：
//+------------------------------------------------------------------+
//| ControlsPicture.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 CPicture"
#include <Controls\Dialog.mqh>
#include <Controls\Picture.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:
CPicture m_picture; // CPicture 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 CreatePicture(void);
//--- handlers of the dependent controls events
void OnClickPicture(void);
};
//+------------------------------------------------------------------+
//| Event Handling |
//+------------------------------------------------------------------+
EVENT_MAP_BEGIN(CControlsDialog)
ON_EVENT(ON_CLICK,m_picture,OnClickPicture)
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(!CreatePicture())
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Create the "Picture" |
//+------------------------------------------------------------------+
bool CControlsDialog::CreatePicture(void)
{
//--- coordinates
int x1=INDENT_LEFT;
int y1=INDENT_TOP+(EDIT_HEIGHT+CONTROLS_GAP_Y);
int x2=x1+32;
int y2=y1+32;
//--- create
if(!m_picture.Create(m_chart_id,m_name+"Picture",m_subwin,x1,y1,x2,y2))
return(false);
//--- set the name of bmp files to display the CPicture control
m_picture.BmpName("\\Images\\euro.bmp");
if(!Add(m_picture))
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Event handler |
//+------------------------------------------------------------------+
void CControlsDialog::OnClickPicture(void)
{
Comment(__FUNCTION__);
}
//+------------------------------------------------------------------+
//| 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)
{
//--- clear comments
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);
}