External exception EEFFACE问题
一个异常问题。。不知道为什么会抛出exception EEFFACE?请教大家。。。

void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
        int    x;
        try
{
x = Edit1->Text.ToInt();
if (x == 1)
{
throw new MyException("抛出啦");
}
}
catch(MyException &myException)
{
   ShowMessage(myException.test);
}
}



class MyException
{
public:
String test;
MyException(String Message)
{
test = Message;
}

};

[解决办法]
上代码，不解释。

class MyException: public Exception
{
public:
    String test;
    MyException(String strMessage): Exception(strMessage)
    {
        test = strMessage;
    }
};


void __fastcall TForm1::Button1Click(TObject *Sender)
{
    int    x;
    try
    {
        x = Edit1->Text.ToInt();
        if (x == 1)
        {
            throw MyException("抛出啦");
        }
    }
    catch (MyException &myException)
    {
       ShowMessage(myException.test);
    }
}