C++Builder 建立及调用DLL DLL 简称动态链接库,是Windows 中程序的重要组成部分。想象一下，一个程序需要多人共同完成开发，怎么个共同法？这时我们就要考虑把程 序分为好几个模块，团队每一个成员开发一个模块。问题来了：如何将模块组合并成一个完整系统？还有，我们开发的软件需要不断升级，如 何升级？难道每次非得把整个工程重新编译一次再发布给用户吗？解决这些问题的科学办法，就是开发动态链接库DLL。 现在以开发myDLL.dll动态链接库为例，讲讲BCB 中开发动态链接库的方法。 1、新建立一个工程：File-New-Other...在New 卡中选择 DLL Wizard 2、将工程存为myDLL.bpr 3、在myDLL.cpp中写接口代码： ////--------------------------------------------------------------------------- #include #include #pragma hdrstop ////--------------------------------------------------------------------------- //// 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.L...
