超越C 下一代C ―C /CLI简介

void _tmain()

{

String^ str = gcnew String("Hello World");

Object^ o1 = gcnew Object();

Console::WriteLine(str);

}

1、 CLR types 

o Reference types 

§ ref class RefClass{...}; 

§ ref struct RefClass{...}; 

2、 Value types 

§ value class ValClass{...}; 

§ value struct ValClass{...}; 

o Interfaces 

§ interface class IType{...}; 

§ interface struct IType{...}; 

o Enumerations 

§ enum class Color{...}; 

§ enum struct Color{...}; 

3、 Native types 

o class Native{...}; 

o struct Native{...}; 

示例：

using namespace System;

interface class IDog

{

void Bark();

};

ref class Dog : IDog

{

public:

void Bark()

{

Console::WriteLine("Bow wow wow");

}

};

void _tmain()

{

Dog^ d = gcnew Dog();

d->Bark();

}

void _tmain()

{

int z = 44;

Object^ o = z; //implicit boxing

int y = *reinterpret_cast<int^>(o); //unboxing

Console::WriteLine("{0} {1} {2}",o,z,y);

z = 66; 

Console::WriteLine("{0} {1} {2}",o,z,y);

}

// 输出结果如下：

// 44 44 44

// 44 66 44

void _tmain()

{

int z = 44;

float f = 33.567;

Object^ o1 = z; 

Object^ o2 = f; 

Console::WriteLine(o1->GetType());

Console::WriteLine(o2->GetType()); 

}

// Output

// System.Int32

// System.Single

void _tmain()

{

int z = 44;

float f = 33.567;

Object^ o1 = z; 

Object^ o2 = f;

int y = *reinterpret_cast<int^>(o2);//System.InvalidCastException

float g = *reinterpret_cast<float^>(o1);//System.InvalidCastException

}

void Box2()

{

float y=45;

Object^ o1 = y;

}

.maxstack 1

.locals (float32 V_0, object V_1)

ldnull

stloc.1

ldc.r4 45.

stloc.0

ldloc.0

box [mscorlib]System.Single

stloc.1

ret