CLabel
CLabel
CLabel 是一个简单控件, 基于 “文本标签” 图表对象。
描述
CBmpButton 的目的在于创建简单的文本标签。
声明
class CLabel : public CWndObj标称库文件
#include <Controls\Label.mqh>继承体系
CLabel
下面提供的代码的结果：
类方法
| 创建 | |
|---|---|
| 创建 | 创建控件 |
| 属性改变事件处理器 | |
| OnSetText | “设置文本” 事件处理器 |
| OnSetColor | “设置颜色” 事件处理器 |
| OnSetFont | “设置字体” 事件处理器 |
| OnSetFontSize | “设置字号” 事件处理器 |
| 内部事件处理器 | |
| 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 |
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
创建文本标签面板的示例：
//+------------------------------------------------------------------+
//| ControlsLabel.mq5 |
//| Copyright 2000-2024, MetaQuotes Ltd. |
//| 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 CLabel"
#include <Controls\Dialog.mqh>
#include <Controls\Label.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:
CLabel m_label; // CLabel 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 CreateLabel(void);
//--- handlers of the dependent controls events
void OnClickLabel(void);
};
//+------------------------------------------------------------------+
//| Event Handling |
//+------------------------------------------------------------------+
EVENT_MAP_BEGIN(CControlsDialog)
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(!CreateLabel())
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Create the "CLabel" |
//+------------------------------------------------------------------+
bool CControlsDialog::CreateLabel(void)
{
//--- coordinates
int x1=INDENT_RIGHT;
int y1=INDENT_TOP+CONTROLS_GAP_Y;
int x2=x1+100;
int y2=y1+20;
//--- create
if(!m_label.Create(m_chart_id,m_name+"Label",m_subwin,x1,y1,x2,y2))
return(false);
if(!m_label.Text("Label"))
return(false);
if(!Add(m_label))
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| 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);
}