DirectShow AMCap改装，无法解析的外部符号 "class CFactoryTemplate * g_Templates"

2017-05-02 10:33:08 670 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

MFC/OCX链接Directshow/strmbasd.lib出现的问题unresolved external symbol "class CFactoryTemplate * g_Templates" 在一个MFC/OCX项目中链接winmm.lib// VS自带PLATFORM SDKstrmbasd.lib// DIRECTSHOW两个静态库的时候出现了以下链接错误 1>strmbasd.lib(dllentry.obj) : error LNK2001: unresolved external symbol "class CFactoryTempla 阅读详情

错误 1 error LNK2001: 无法解析的外部符号 "class CFactoryTemplate * g_Templates" (?g_Templates@@3PAVCFactoryTemplate@@A)
错误 2 error LNK2001: 无法解析的外部符号 "int g_cTemplates" (?g_cTemplates@@3HA)

1>strmbase.lib(dllentry.obj) : error LNK2001: 无法解析的外部符号 "class CFactoryTemplate * g_Templates" (?g_Templates@@3PAVCFactoryTemplate@@A)
1>strmbase.lib(dllentry.obj) : error LNK2001: 无法解析的外部符号 "int g_cTemplates" (?g_cTemplates@@3HA)

把AMCap代码文件复制到MFC工程里面，出现上述两个错误：STRMBASE.lib已经链接，不知道问题出在哪。
dllentry.cpp里面与上面相关的代码是：

extern CFactoryTemplate g_Templates[1];
extern int g_cTemplates;

//called by COM to get the class factory object for a given class
STDAPI
DllGetClassObject(
REFCLSID rClsID,
REFIID riid,
void **pv)
{
if (!(riid == IID_IUnknown) && !(riid == IID_IClassFactory)) {
return E_NOINTERFACE;
}

// traverse the array of templates looking for one with this
// class id
for (int i = 0; i < g_cTemplates; i++) {
const CFactoryTemplate * pT = &g_Templates[i];
if (pT->IsClassID(rClsID)) {

// found a template - make a class factory based on this
// template

*pv = (LPVOID) (LPUNKNOWN) new CClassFactory(pT);
if (*pv == NULL) {
return E_OUTOFMEMORY;
}
((LPUNKNOWN)*pv)->AddRef();
return NOERROR;
}
}
return CLASS_E_CLASSNOTAVAILABLE;
}

//
// Call any initialization routines
//
void
DllInitClasses(BOOL bLoading)
{
int i;

// traverse the array of templates calling the init routine
// if they have one
for (i = 0; i < g_cTemplates; i++) {
const CFactoryTemplate * pT = &g_Templates[i];
if (pT->m_lpfnInit != NULL) {
(*pT->m_lpfnInit)(bLoading, pT->m_ClsID);
}
}

}

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