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概述
c#调用c++写成的dll文件,返回char*,返回数组,用ref接收,byte[] ,最近做个项目,又想不起来了。这下Mark一下
/
Inclusion guard
#ifndef _DLLTUT_DLL_H_
#define _DLLTUT_DLL_H_
// Make our life easier, if DLL_EXPORT is defined in a file then DECLDIR will do an export
// If it is not defined DECLDIR will do an import
#if defined DLL_EXPORT
#define DECLDIR __declspec(dllexport)
#else
#define DECLDIR __declspec(dllimport)
#endif
// Specify "C" linkage to get rid of C++ name mangeling
extern " C "
{
// Declare 2 functions
DECLDIR int Add( int a, int b );
DECLDIR void Function( void );
DECLDIR void GetPrt( char * prtStr );
}
// End the inclusion guard
#endif
#ifndef _DLLTUT_DLL_H_
#define _DLLTUT_DLL_H_
// Make our life easier, if DLL_EXPORT is defined in a file then DECLDIR will do an export
// If it is not defined DECLDIR will do an import
#if defined DLL_EXPORT
#define DECLDIR __declspec(dllexport)
#else
#define DECLDIR __declspec(dllimport)
#endif
// Specify "C" linkage to get rid of C++ name mangeling
extern " C "
{
// Declare 2 functions
DECLDIR int Add( int a, int b );
DECLDIR void Function( void );
DECLDIR void GetPrt( char * prtStr );
}
// End the inclusion guard
#endif
static void Main(string[] args)
{
test.Function();
Console.WriteLine("result: " + test.Add(2, 3).ToString());
//string str = "aaddddddddddd";
byte[] str = new byte[12];
test.GetPrt(ref str[0]);
Console.WriteLine(System.Text.Encoding.GetEncoding("GB2312").GetString(str));
Console.ReadLine();
}
}
class test
{
[DllImport("..\..\lib\DLLTest.dll")]
public static extern void Function();
[DllImport("..\..\lib\DllTest.dll")]
public static extern int Add(int i,int j);
[DllImport("..\..\lib\DllTest.dll")]
public static extern void GetPrt(ref byte prtStr);
}
{
test.Function();
Console.WriteLine("result: " + test.Add(2, 3).ToString());
//string str = "aaddddddddddd";
byte[] str = new byte[12];
test.GetPrt(ref str[0]);
Console.WriteLine(System.Text.Encoding.GetEncoding("GB2312").GetString(str));
Console.ReadLine();
}
}
class test
{
[DllImport("..\..\lib\DLLTest.dll")]
public static extern void Function();
[DllImport("..\..\lib\DllTest.dll")]
public static extern int Add(int i,int j);
[DllImport("..\..\lib\DllTest.dll")]
public static extern void GetPrt(ref byte prtStr);
}
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