I´ve made a "main" class lets call it A(Veichle), and i have two classes that inherits from A Lets call them B(Car) and C(MC). i also have a handler lets call it "D" that binds A,B and C. Then i have the Form1 class lets call that E(Visual)
我想在列表框中的视觉形式“E”上打印出来自A的私人成员
如果我尝试ex）
这->；列表框1->；项目->；添加（X.veichles[i]->；getBrand（））；
它抱怨维奇尔斯是D的私人会员。
我该怎么避开它？
private意味着其他类不允许访问。
您应该创建一个公共访问器函数。例如，GetVehicleByIndex（int idx）。
您的代码如下所示：
A* pVehicle = X.GetVehicleByIndex(i);
if (pVehicle) // assuming NULL indicates error
add(pVehicle->getBrand());
else
// react on error
那我就可以回答我自己的问题了。
在与form1.h通信的类的handler.cpp中，您创建了一个函数：
void getPersonByIndex(i);
return this->person[i]->getSurName();
然后在＜code＞form1.h＜/code＞中，您可以写：
for(int i=0;i<this->getNrOfPersons;i++)
String^ str = new String(comm.getPersonByIndex(i)); //this conversion was my problem
this->listbox->beginupdate();
this->listbox->items->add(str);
this->listbox->endupdate();
A couple of friends was discussing the use of inheritance and how to check if a subclass is of a specific type and we decided to post it here on Stack. The debate was about if you should implement a ...
Hi I have two classes, one called Instruction, one called LDI which inherits from instruction class. class Instruction{ protected: string name; int value; public: Instruction(string ...
I ve not used C++ in a while, and I ve become far too comfortable with the ease-of-use of real languages. At any rate, I m attempting to implement the Command pattern, and I need to map a number of ...
Suppose I have some code like this: class Base { public: virtual int Foo(int) = 0; }; class Derived : public Base { public: int Foo(int); virtual double Foo(double) = 0; }; ...
What is your opinion of this design decision? What advantages does it have and what disadvantages? Links: Embedding description
I want to extend the FileReference class of Flex to contain a custom property. I want to do this because AS3 doesn t let me pass arguments to functions through event listeners, which makes me feel sad,...
I have the following class structure: class InterfaceA { virtual void methodA =0; } class ClassA : public InterfaceA { void methodA(); } class InterfaceB : public InterfaceA { virtual ...
Consider the Java code below, what would happen if there were no paintComponent method in JPanel class? ... import javax.swing.JPanel; public class ShapesJPanel extends JPanel { public void ...