how-to-catch-exceptions-in-native-code-thrown-from-msil.md

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How to: Catch Exceptions in Native Code Thrown from MSIL | Microsoft Docs		11/04/2016			cpp-windows		article	C++	exceptions, catching catching exceptions, thrown from MSIL MSIL, catching exceptions in native code	c15afd2b-8505-43bf-8a4a-f1d41532a124	9	mikeblome	mblome	ghogen

How to: Catch Exceptions in Native Code Thrown from MSIL

In native code, you can catch native C++ exception from MSIL. You can catch CLR exceptions with __try and __except.

For more information, see Structured Exception Handling (C/C++) and C++ Exception Handling.

Example

The following sample defines a module with two functions, one that throws a native exception, and another that throws an MSIL exception.

// catch_MSIL_in_native.cpp  
// compile with: /clr /c  
void Test() {  
   throw ("error");  
}  
  
void Test2() {  
   throw (gcnew System::Exception("error2"));  
}  

Example

The following sample defines a module that catches a native and MSIL exception.

// catch_MSIL_in_native_2.cpp  
// compile with: /clr catch_MSIL_in_native.obj  
#include <iostream>  
using namespace std;  
void Test();  
void Test2();  
  
void Func() {  
   // catch any exception from MSIL  
   // should not catch Visual C++ exceptions like this  
   // runtime may not destroy the object thrown  
   __try {  
      Test2();  
   }  
   __except(1) {  
      cout << "caught an exception" << endl;  
   }  
  
}  
  
int main() {  
   // catch native C++ exception from MSIL  
   try {  
      Test();  
   }  
   catch(char * S) {  
      cout << S << endl;  
   }  
   Func();  
}  

error  
caught an exception  

See Also

Exception Handling