Managed C++/CLI

void mod_str(String ^bb) {
    bb="bau";
}

void mod_str(String ^%bb) {
    bb="bau";
}

//MixedAPI.h

#ifdef _MANAGED
   using System;
   using System::Runtime::InteropServices;
#endif

#include <string>

class MixedAPI
{
public:
#ifdef _MANAGED
    void TakeAString(gcroot<String^>); // Managed callers can see this
#else
    void TakeAString(std::string);  // Native users can only see this
#endif
};

//MixedAPI.cpp

void MixedAPI::TakeAString(gcroot<String^> str)
{
    // implementation
}

void MixedAPI::TakeAString(std::string str)
{
   // implementation
}

carlo.andreoli wrote:

you can download my sample file with the problem

carlo.andreoli wrote:

Pls give it a try it's only 100 lines of code

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
	try {
		db::database db2;
	 }
	 catch (System::Exception ^exception) {
			
	 }

carlo.andreoli wrote:

6) i take his code and put it on a form, using clr option to compile,it compiles well but then it crash giving me the error you see in the starter thread

carlo.andreoli wrote:

i'll give it a try...but i'm new to c++ programming

jashimu wrote:

I want to copy column in a different location of the new array
B[0,0]=A[0,2]
B[0,1]=A[0,3]
B[0,2]=A[0,0]
B[0,3]= A[0,0];