【转】SAPI 包含sphelper.h编译错误解决方案 在使用Microsoft Speech SDK 5.1开发语音识别程序时，包含了头文件“sphelper.h”和库文件“sapi.lib”。编译时出错： 1>c:/program files/microsoft speech sdk 5.1/include/sphelper.h(769) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:/program files/microsoft speech sdk 5.1/include/sphelper.h(1419) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:/program files/microsoft speech sdk 5.1/include/sphelper.h(2373) : error C2065: 'psz' : undeclared identifier 1>c:/program files/microsoft speech sdk 5.1/include/sphelper.h(2559) : error C2440: 'initializing' : cannot convert from 'CSpDynamicString' to 'SPPHONEID *' 1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 1>c:/program files/microsoft speech sdk 5.1/include/sphelper.h(2633) : error C2664: 'wcslen' : cannot convert parameter 1 from 'SPPHONEID *' to 'const wchar_t *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 搜索了一圈，根据大家的经验汇总，应该是Speech代码编写时间太早，语法不严密。而VS2005对于语法检查非常严格，导致编译无法通过。修改头文件中的以下行即可正常编译：
Ln 769 const ulLenVendorPreferred = wcslen(pszVendorPreferred);
const unsigned long ulLenVendorPreferred = wcslen(pszVendorPreferred);
Ln 1418 static CoMemCopyWFEX(const WAVEFORMATEX * pSrc, WAVEFORMATEX ** ppCoMemWFEX)
static HRESULT CoMemCopyWFEX(const WAVEFORMATEX * pSrc, WAVEFORMATEX ** ppCoMemWFEX)
Ln 2372 for (const WCHAR * psz = (const WCHAR *)lParam; *psz; psz++) {}
const WCHAR * psz; for (psz = (const WCHAR *)lParam; *psz; psz++) {}
Ln 2559 SPPHONEID* pphoneId = dsPhoneId;
SPPHONEID* pphoneId = (SPPHONEID*)((WCHAR *)dsPhoneId);
Ln 2633 pphoneId += wcslen(pphoneId) + 1;
pphoneId += wcslen((const wchar_t *)pphoneId) + 1; 好了，编译通过，下面可以正式编写程序逻辑了。