[关于IDL:代理/存根] [英] [About IDL:Proxy/Stub]

问题描述

我要定义自定义代理/存根com对象在VC6.0环境中，步骤如下:
1，定义一个简单的IDL文件
2，通过MIDL编译
3，将* _i.c，* _ p.c，*.h，*.def添加到空Win32 DLL
4，定义功能:DllGetClassObject，DllCanUnloadNow等.
5，编译所有Dll
发生链接错误:
****************************************************** ************
Main.obj:错误LNK2005:_DllGetClassObject @ 12已在dlldata.obj中定义
Main.obj:错误LNK2005:_DllCanUnloadNow @ 0已在dlldata.obj中定义
Main.obj:警告LNK4006:_DllGetClassObject @ 12已在dlldata.obj中定义；第二个定义被忽略
Main.obj:警告LNK4006:_DllCanUnloadNow @ 0已在dlldata.obj中定义；第二个定义被忽略
创建库Debug/HelloProxyStub.lib和对象Debug/HelloProxyStub.exp
HelloProxyStub.exp:警告LNK4070:.EXP中的/OUT:HelloProxyStubDef.dll指令与输出文件名"Debug/HelloProxyStub.dll"不同；忽略指令
Debug/HelloProxyStub.dll:致命错误LNK1169:找到一个或多个乘法定义的符号
执行link.exe时出错.
****************************************************** ************

I wanto to define a custom proxy/stub com object At VC6.0 Envirment,steps as follow：
1、Define A Simple IDL File
2、Compile it by MIDL
3、Add *_i.c、*_p.c、*.h、*.def To Empty Win32 DLL
4、Define Funtion：DllGetClassObject、DllCanUnloadNow etc.
5、Compile All Dll
Link Error Happened：
**************************************************************
Main.obj : error LNK2005: _DllGetClassObject@12 already defined in dlldata.obj
Main.obj : error LNK2005: _DllCanUnloadNow@0 already defined in dlldata.obj
Main.obj : warning LNK4006: _DllGetClassObject@12 already defined in dlldata.obj; second definition ignored
Main.obj : warning LNK4006: _DllCanUnloadNow@0 already defined in dlldata.obj; second definition ignored
Creating library Debug/HelloProxyStub.lib and object Debug/HelloProxyStub.exp
HelloProxyStub.exp : warning LNK4070: /OUT:HelloProxyStubDef.dll directive in .EXP differs from output filename "Debug/HelloProxyStub.dll"; ignoring directive
Debug/HelloProxyStub.dll : fatal error LNK1169: one or more multiply defined symbols found
Error executing link.exe.
**************************************************************

推荐答案

dlldata.c
中的宏DLLDATA_ROUTINES
已经定义了DllGetClassObject和DllCanUnloadNow，
因此您不必重复两次(您的第四个位置):)

The macro DLLDATA_ROUTINES in your dlldata.c

has already defined DllGetClassObject and DllCanUnloadNow,
so you have not to do it twice (your fourth position) :)

在楼上:谢谢您和我还有其他问题
如果要实现自定义的代理/存根结构，则必须为所有Com对象构建一个以上的代理/存根结构?例如:ClassFactory，COM Class1，COM Class2，因为dlldata.c中的DLLDATA_ROUTINES宏
我已经定义了DllGetClassObject(此函数定义了一个Com对象).

To upstairs:Thank You And I Have Other Question
If i want to realize a custom proxy/stub structure，I Must Build More Than One Proxy/Stub For All Com Object？Such As：ClassFactory、COM Class1、COM Class2,Because The macro DLLDATA_ROUTINES in dlldata.c
has already defined DllGetClassObject(This Function Definition A Com Object)。

我认为，DllGetClassObject
的第一个参数 对于不同的类可能会有所不同...:)

I think, the first parameter of DllGetClassObject
could be different for the different classes... :)

这篇关于[关于IDL:代理/存根]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！