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"));
}
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