exceptions

[dragonslayer008]

I read in a C++/CLI book that:

"In C++/CLI, exceptions are always thrown on the managed heap, never
the stack."

So I'm wondering if this will be a problem for me. Here is my
situation.

I am using C++/CLI mainly to wrap some unmanaged C++ code so the code
can be used from C# via a DLL. My unmanaged code can throw some
exceptions (unmanaged exception class).

My question is, can the methods of the managed class try and catch the
unmanaged exceptions? That is, could I write something like this in a
managed class method:

try
{
native->foo();
}
catch( NativeException e)
{
...
}

If not, I guess I need to move the native exception handling down into
the unmanaged classes?

 

[Doug Semler]

I read in a C++/CLI book that:

"In C++/CLI, exceptions are always thrown on the managed heap, never
the stack."

So I'm wondering if this will be a problem for me. Here is my
situation.

I am using C++/CLI mainly to wrap some unmanaged C++ code so the code
can be used from C# via a DLL. My unmanaged code can throw some
exceptions (unmanaged exception class).

My question is, can the methods of the managed class try and catch the
unmanaged exceptions? That is, could I write something like this in a
managed class method:

try
{
native->foo();
}
catch( NativeException e)
{
...
}

If not, I guess I need to move the native exception handling down into
the unmanaged classes?

AFAIK, all exceptions (both SEH and C++) are wrapped into a "generic"
SEHException class that can be caught in managed code. I do not know that
you can get the type (or any of the contents) of the unmanaged exception
type that was thrown from the unmanaged code...but I believe there's a way
to get at least the value if it's an SEH exception type.

I'm pretty sure there's a bunch of information in MSDN on SEH exceptions and
how they're handled in managed code...

--
Doug Semler, MCPD
a.a. #705, BAAWA. EAC Guardian of the Horn of the IPU (pbuhh).
The answer is 42; DNRC o-
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