//---------------------------------------------------------------------------
// Important note about DLL memory management when your DLL uses the
// static version of the RunTime Library:
//
// If your DLL exports any functions that pass String objects (or structs/
// classes containing nested Strings) as parameter or function results,
// you will need to add the library MEMMGR.LIB to both the DLL project and
// any other projects that use the DLL. You will also need to use MEMMGR.LIB
// if any other projects which use the DLL will be performing new or delete
// operations on any non-TObject-derived classes which are exported from the
// DLL. Adding MEMMGR.LIB to your project will change the DLL and its calling
// EXE's to use the BORLNDMM.DLL as their memory manager. In these cases,
// the file BORLNDMM.DLL should be deployed along with your DLL.
//
// To avoid using BORLNDMM.DLL, pass string information using "char *" or
// ShortString parameters.
//
// If your DLL uses the dynamic version of the RTL, you do not need to
// explicitly add MEMMGR.LIB as this will be done implicitly for you
当dll使用静态RTL时关于内存管理的重要说明：
如果你的dll提供了参数中或返回值中有String对象（或包含String对象的类或结构体）
的输出函数，你必须加载MEMMGR.LIB到你的dll工程及调用dll的工程。
还有，如果调用dll的工程new或者delete了任何该dll提供的非TObject子孙类，也需要加载MEMMGR.LIB。
加载MEMMGR.LIB会使得dll及其调用者使用BORLNDMM.DLL作为他们的内存管理器。
所以，你需要把BORLNDMM.DLL和你的dll放在一起发布。
改用“char *”或者ShortString做参数可以避免BORLNDMM.DLL的使用。
如果你的dll使用动态RTL，你不需要显式的加载MEMMGR.LIB，BCB隐式的为你做了此工作。
本文地址：http://com.8s8s.com/it/it21929.htm