C++创建的是Win32 DLL程序，代码如下：
#include "stdafx.h"
#include "CustomerInfo.h"
#include <stdio.h>
#include <malloc.h>
typedef
struct
{
char
name[32];
int
age;
}Customer;
CustomerInfo* customerInfo;
extern
"C"
__declspec(dllexport) Customer* Create(
char
* name,
int
age)
{
Customer* cust = (Customer*)malloc(
sizeof
(Customer));
customerInfo =
new
CustomerInfo(name, age);
strcpy(cust->name,customerInfo->GetName());
cust->age = customerInfo->GetAge();
return
cust;
}
void
__stdcall PrintMsg(
const
char
* msg)
{
printf(
"%s\n"
,msg);
return
;
}
extern
"C"
__declspec(dllexport)
int
Add(
int
x,
int
y)
{
return
x + y;
}
extern
"C"
__declspec(dllexport)
int
Sub(
int
x,
int
y)
{
return
x - y;
}
|
C++创建的头文件CustomerInfo.h代码如下:
class
CustomerInfo{
private
:
char
* m_Name;
int
m_Age;
public
:
CustomerInfo(
char
* name,
int
age)
{
m_Name = name;
m_Age = age;
}
virtual
~CustomerInfo(){}
int
GetAge(){
return
m_Age;}
char
* GetName() {
return
m_Name;}
};
|
C#创建控制台应用程序，代码如下：
class
Program
{
[DllImport(
"NativeLibTest.dll"
)]
public
static
extern
int
Add(
int
x,
int
y);
[DllImport(
"NativeLibTest.dll"
)]
public
static
extern
int
Sub(
int
x,
int
y);
[DllImport(
"NativeLibTest.dll"
)]
public
static
extern
IntPtr Create(
string
name,
int
age);
[StructLayout(LayoutKind.Sequential)]
public
struct
Customer
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
public
string
Name;
public
int
Age;
}
static
void
Main(
string
[] args)
{
int
temp = Add(4, 7);
Console.WriteLine( temp.ToString());
IntPtr ptr = Create(
"work hard work smart"
, 27);
Customer customer = (Customer)Marshal.PtrToStructure(ptr,
typeof
(Customer));
Console.WriteLine(
"Name:{0}, Age:{1}"
, customer.Name, customer.Age);
}
}
|
注意：C++生成的DLL和Lib文件拷到C#的Bin目录下，或者输出文件路径指向为生成的DLL文件路径。
本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2011/09/24/2189396.html，如需转载请自行联系原作者
