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 | | From: | =?Utf-8?B?5Ya35p6r?= | | Subject: | =?Utf-8?B?6auY5omL6K+36L+b77yaQyPoo4XphY3ku7bosIPnlKhNYW5hZ2VkQysr?= | | Date: | Wed, 19 Jan 2005 23:45:02 -0800 |
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C#装配件调用ManagedC++装配件时，数组怎么传递的？ 如以下的代码。
Manged C++中，
#pragma once
#using
#include "StdAfx.h"
public __gc class MyMathTool
{
public:
//判断一个点是否在多边形内
int PointAndPoly(double x, double y, int np, double* xp, double* yp)
{
return 0;
}
}
C#中某个类的一个函数，调用上面那个装配件：
void myFunc()
{
double x; double y;
int np = 10;
double[] xp = new double[np];
double[] yp = new double[np];
MyMathTool.PointAndPoly(x, y, np, xp, yp);
}
编译出错。应该怎么样写呢？
谢谢！
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| | From: | Jacky Kwok | | Subject: | Re: =?UTF-8?B?6auY5omL6K+36L+b77yaQyPoo4XphY3ku7bosIPnlKhNYW5hZ2U=?= | | Date: | Thu, 20 Jan 2005 17:23:44 +0800 |
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| 冷枫 wrote:
> C#装配件调用ManagedC++装配件时，数组怎么传递的？ 如以下的代码。
>
> Manged C++中，
> #pragma once
> #using
> #include "StdAfx.h"
> public __gc class MyMathTool
> {
> public:
> //判断一个点是否在多边形内
> int PointAndPoly(double x, double y, int np, double* xp, double* yp)
> {
>
> return 0;
> }
> }
>
> C#中某个类的一个函数，调用上面那个装配件：
> void myFunc()
> {
> double x; double y;
> int np = 10;
> double[] xp = new double[np];
> double[] yp = new double[np];
> MyMathTool.PointAndPoly(x, y, np, xp, yp);
> }
>
> 编译出错。应该怎么样写呢？
>
> 谢谢！
From C# calling to MC++, the array in C# is managed arrag
You should define
public __gc class MyMathTool
{
public:
int PointAndPoly(double x, double y, int np,
double xp __gc[],
double yp __gc[])
{
....
"double xp __gc[]" is a managed array type, it has a count member. In
fact, you are not necessary to pass the "int np".
An example to get the sum of double __gc[],
double Class1::Sum1(double array __gc[])
{
int len = array->Count;
double sum=0.0;
for (int i=0; i sum += array[i];
return sum;
}
--
Jacky Kwok
jacky@alumni_DOT_cuhk_DOT_edu_DOT_hk
jacky@compose_DOT_com_DOT_hk
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| | From: | =?Utf-8?B?5Ya35p6r?= | | Subject: | =?Utf-8?B?UmU6IOmrmOaJi+ivt+i/m++8mkMj6KOF6YWN5Lu26LCD55SoTWFuYWdlZA==?= | | Date: | Thu, 20 Jan 2005 02:33:01 -0800 |
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| Thanks a great deal. I solved the problem using your method, thank you.
“Jacky Kwok”编写：
> 冷枫 wrote:
> > C#装配件调用ManagedC++装配件时，数组怎么传递的？ 如以下的代码。
> >
> > Manged C++中，
> > #pragma once
> > #using
> > #include "StdAfx.h"
> > public __gc class MyMathTool
> > {
> > public:
> > //判断一个点是否在多边形内
> > int PointAndPoly(double x, double y, int np, double* xp, double* yp)
> > {
> >
> > return 0;
> > }
> > }
> >
> > C#中某个类的一个函数，调用上面那个装配件：
> > void myFunc()
> > {
> > double x; double y;
> > int np = 10;
> > double[] xp = new double[np];
> > double[] yp = new double[np];
> > MyMathTool.PointAndPoly(x, y, np, xp, yp);
> > }
> >
> > 编译出错。应该怎么样写呢？
> >
> > 谢谢！
>
>
> From C# calling to MC++, the array in C# is managed arrag
> You should define
>
> public __gc class MyMathTool
> {
> public:
>
> int PointAndPoly(double x, double y, int np,
> double xp __gc[],
> double yp __gc[])
> {
> ....
>
>
> "double xp __gc[]" is a managed array type, it has a count member. In
> fact, you are not necessary to pass the "int np".
>
> An example to get the sum of double __gc[],
>
> double Class1::Sum1(double array __gc[])
> {
> int len = array->Count;
> double sum=0.0;
> for (int i=0; i> sum += array[i];
>
> return sum;
> }
>
>
>
>
>
>
>
>
>
>
>
> --
> Jacky Kwok
> jacky@alumni_DOT_cuhk_DOT_edu_DOT_hk
> jacky@compose_DOT_com_DOT_hk
>
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