ThinkPHP5 调用Jump基类 为啥还是报错

ThinkPHP5 调用Jump基类 为啥还是报错 求大神指点 帮我看看 急

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[code=C/C++]rn// Ex12aDoc.h : interface of the CEx12aDoc classrn//rn/////////////////////////////////////////////////////////////////////////////rnrn#if !defined(AFX_EX12ADOC_H__B8E311EC_BB93_4F91_887D_BB4C6AEB36B3__INCLUDED_)rn#define AFX_EX12ADOC_H__B8E311EC_BB93_4F91_887D_BB4C6AEB36B3__INCLUDED_rnrn#if _MSC_VER > 1000rn#pragma oncern#endif // _MSC_VER > 1000rnrnrnclass CEx12aDoc : public CDocumentrnrnprotected: // create from serialization onlyrn CEx12aDoc();rn DECLARE_DYNCREATE(CEx12aDoc)rnrn// Attributesrnpublic:rn rnrn// Operationsrnpublic:rnrn// Overridesrn // ClassWizard generated virtual function overridesrn //AFX_VIRTUAL(CEx12aDoc)rn public:rn virtual BOOL OnNewDocument();rn virtual void Serialize(CArchive& ar);rn //AFX_VIRTUALrnrn// Implementationrnpublic:rn virtual ~CEx12aDoc();rn rn#ifdef _DEBUGrn virtual void AssertValid() const;rn virtual void Dump(CDumpContext& dc) const;rn#endifrnrnprotected:rnrn// Generated message map functionsrnprotected:rn //AFX_MSG(CEx12aDoc)rn // NOTE - the ClassWizard will add and remove member functions here.rn // DO NOT EDIT what you see in these blocks of generated code !rn //AFX_MSGrn DECLARE_MESSAGE_MAP()rnpublic:rn CString m_strText; //申明了一个全局的CStringrn;rnrn/////////////////////////////////////////////////////////////////////////////rnrn//AFX_INSERT_LOCATIONrn// Microsoft Visual C++ will insert additional declarations immediately before the previous line.rnrn#endif // !defined(AFX_EX12ADOC_H__B8E311EC_BB93_4F91_887D_BB4C6AEB36B3__INCLUDED_)rnrnrn//=================================================================================================rnrn// Ex12aView.cpp : implementation of the CEx12aView classrn//rnrn#include "stdafx.h"rn#include "Ex12a.h"rnrn#include "Ex12aDoc.h"rn#include "Ex12aView.h"rnrn#ifdef _DEBUGrn#define new DEBUG_NEWrn#undef THIS_FILErnstatic char THIS_FILE[] = __FILE__;rn#endifrnrn/////////////////////////////////////////////////////////////////////////////rn// CEx12aViewrnrnIMPLEMENT_DYNCREATE(CEx12aView, CView)rnrnBEGIN_MESSAGE_MAP(CEx12aView, CView)rn //AFX_MSG_MAP(CEx12aView)rn ON_COMMAND(ID_EDIT_CLEAR_ALL, OnEditClearAll)rn ON_UPDATE_COMMAND_UI(ID_EDIT_CLEAR_ALL, OnUpdateEditClearAll)rn //AFX_MSG_MAPrnEND_MESSAGE_MAP()rnrn/////////////////////////////////////////////////////////////////////////////rn// CEx12aView construction/destructionrnrnCEx12aView::CEx12aView()rnrn // TODO: add construction code herernrnrnrnCEx12aView::~CEx12aView()rnrnrnrnBOOL CEx12aView::PreCreateWindow(CREATESTRUCT& cs)rnrn // TODO: Modify the Window class or styles here by modifyingrn // the CREATESTRUCT csrnrn return CView::PreCreateWindow(cs);rnrnrn/////////////////////////////////////////////////////////////////////////////rn// CEx12aView drawingrnrnvoid CEx12aView::OnDraw(CDC* pDC)rnrn CEx12aDoc* pDoc = GetDocument();rn ASSERT_VALID(pDoc);rn // TODO: add draw code for native data herernrnrn/////////////////////////////////////////////////////////////////////////////rn// CEx12aView diagnosticsrnrn#ifdef _DEBUGrnvoid CEx12aView::AssertValid() constrnrn CView::AssertValid();rnrnrnvoid CEx12aView::Dump(CDumpContext& dc) constrnrn CView::Dump(dc);rnrnrnCEx12aDoc* CEx12aView::GetDocument() // non-debug version is inlinernrn ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CEx12aDoc)));rn return (CEx12aDoc*)m_pDocument;rnrn#endif //_DEBUGrnrn/////////////////////////////////////////////////////////////////////////////rn// CEx12aView message handlersrnrnvoid CEx12aView::OnEditClearAll() rnrn // TODO: Add your command handler code herern m_strText.Empty(); //报错rn rnrnrnvoid CEx12aView::OnUpdateEditClearAll(CCmdUI* pCmdUI) rnrn // TODO: Add your command update UI handler code herern pCmdUI->Enable(!m_strText.IsEmpty()); //报错rn rnrnrn//报错信息rn/*rn--------------------Configuration: Ex12a - Win32 Debug--------------------rnCompiling...rnEx12aView.cpprnD:\VC source\Ex12a\Ex12aView.cpp(86) : error C2065: 'm_strText' : undeclared identifierrnD:\VC source\Ex12a\Ex12aView.cpp(86) : error C2228: left of '.Empty' must have class/struct/union typernD:\VC source\Ex12a\Ex12aView.cpp(93) : error C2228: left of '.IsEmpty' must have class/struct/union typernError executing cl.exe.rnCreating browse info file...rnrnEx12a.exe - 3 error(s), 0 warning(s)rn*/rnrnrn[/code]rn从提示错误信息来看,rn 1)m_strText不是已经申明在Ex12aDoc.h ,Ex12aView.cpp已经include此头文件,为什么还会报错?rn 2)error C2228: left of '.Empty' must have class/struct/union type ,这是啥意思呀?rn还请大虾赐教!
为啥调用sp_primary_keys_rowset没反应?
在本库调用exec sp_primary_keys_rowset 表名, NULLrn列都全,就是没行。rnrn咋回事呢?
12.2.2 调用基类构造函数
所有类至少都有一个构造函数。一个派生类自动包含来自基类的所有字段。创建一个对象时,这些字段需要初始化。因此,派生类的构造函数必须调用它的基类的构造函数。在定义了构造函数的前提下,可以关键字base来调用一个基类的构造函数。 class IdentifierToken : Token{   public IdentifierToken(string name) : base(name
基类调用派生类函数
如果是基类中的virtualfunction,并且派生类也对其进行了override,则用基类的指针或者引用操纵派生类的指针或引用可以通过自动upcast直接使用派生类。如果基类中没有派生类的一个函数,而通过基类的指针或者引用操纵派生类的指针或引用,必须用显示downcast才可以使用,比如:classBase{};classDerived:publicBase{public:...
隐藏基类的方法与调用
#include using namespace std; class mam{ public: void move() const {cout << "mammal move one step.\n"; } void move(int distance)const { cout << "mommal move";
显示调用基类的构造方法:
def __init__(self,......):    ......实例: 一个对象里面可以包含许多对象,可以层层调用。Student类继承Human类的特征,并增加了一个Score新属性Doctor类继承Student类的特征,并增加一个grad新属性。继承父类的方法通过Super()函数来实现。super(Student,self).__init__(name,age)super(Doct...
调用基类成员变量的成员变量...
[code=C/C++]rnclass CBasernrnpublic:rn CBase() m_p = new CBase; rn ~CBase() rnrnprotected:rn CBase* m_p;rn;rnrnclass CTest : public CBasernrnpublic:rn CTest() rn ~CTest() rnrn void Test()rn rn CBase* p = m_p->m_p; // 关键点rn rn;rn[/code]rn上面"关键点"编译会包错,是因为this类型与m_p类型不同导致的么???rn如果强制转换可以么?rn一般都这样做是吧?
如何调用基类方法
问题描述:(c#)rn有如下继承关系:class C : class B;class B : class ArnB类重写了A类方法:protected override void Fun()rn要求在C类中重写Fun()方法,在该方法中调用A类的Fun()方法(PS:不是调用B类的Fun()--base.Fun()),要求:不能直接使用A类Fun()方法的代码实现。rnrn~在线等rnrnrn
为啥不能调用dll
我自己遍的dll,在声明的时候只能写绝对路径rn我记得把dll复制到system下之后就可以写相对路径了?rn是吗?rn为啥还是找不到dll?
基类protected方法的调用
package a;rnpublic class Basernrn protected void pro()rn rn System.out.println("This is a protected method.");rn rnrnrnpackage b;rnimport a.Base;rnpublic class Derived extends Basernrn public static void main(String[] args)rn rn Derived dr = new Derived();rn dr.pro();rn rnrnrnpackage b;rnrnpublic class Anotherrnrn public static void main(String[] args)rn rn Derived dr = new Derived();rn dr.pro(); //errorrn rnrnrnpackage a;rnimport b.Derived;rnpublic class Another2rnrn public static void main(String[] args)rn rn Derived dr = new Derived();rn dr.pro();rn rnrnrn为什么是这样?rn如何思考rnrn
调用基类的构造函数
public class Animal rn public Animal(String aType) rn type = new String(aType);rn rnrn public String toString() rn return "This is a " + type;rn rnrn private String type;rnrnrnpublic class Dog extends Animal rn public Dog(String aName) rn super("Dog");rn name = aName;rn breed = "Unknown";rn rn public Dog(String aName, String aBreed) rn super("Dog");rn name = aName;rn breed = aBreed;rn rn rn private String name;rn private String breed;rnrnrnpublic class TestBerived rn public static void main(String[] args) rn Dog aDog = new Dog("Fido", "Chihuahua");rn Dog starDog = new Dog("Lassie");rn System.out.println(aDog);rn System.out.println(starDog);rn rnrnrn输出结果是:rnThis is a DogrnThis is a Dogrnrn[size=x-small]请问调用基类的构造函数为何会隐含调用基类的toString方法呢?[/size]
基类与派生类的对象调用
下列代码之后的结果为( adcee ) #include&lt;iostream&gt; using namespace std; struct Base{ int i; virtual int f() { cout&lt;&lt;"a"; return 1; } virtual const Base &amp;f() const { cout...
为何要调用基类???
void myframe::OnLButtonDown(UINT nFlags,CPoint point)rnrn ....rn ....rn CFrameWnd:OnLButtonDown(nFlags,point);---基类rnrn在这里面的基类起什么作用,不大明白???rn还望各位帮我解释一下
如何调用基类的析构函数?
public class baseClassrn rn ~baseClass()rn rn rn rnrn class baseLevel1Class:baseDbClass rn rn ~baseLevel1Class()rn rn //如何调用基类的析构函数?rn rn