CException::Delete

void CException::Delete();

说明：

此函数检查CException对象是否在堆顶建立，如果在堆顶建立，对该对象做删除操作。当删除该CException对象后，使用Delete成员函数删除异常。不要直接使用删除操作，因为CException对象可能是一个全局对象或者是在栈中创建的。

你可以指定当对象被创建时是否应被删除。要了解更多信息，请参阅CException::CException。

如果使用C++“试抓”（try-catch）机制，只需调用Delete。如果使用MFC的TRY和CATCH宏，这些宏会自动调用此成员函数。

MSDN 解释如下：

CException::Delete

void CException::Delete( );

Remarks

This function checks to see if the CException object was created on the heap, and if so, it calls the delete operator on the object. When deleting a CException object, use the Delete member function to delete the exception. Do not use the delete operator directly, because the CException object may be a global object or have been created on the stack.

You can specify whether the object should be deleted when the object is constructed. For more information, see CException::CException.

You only need to call Delete if you are using the C++ try-catch mechanism. If you are using the MFC macros TRY and CATCH, then these macros will automatically call this function.