SAPI 包含sphelper.h編譯錯誤解決方案
在使用Microsoft Speech SDK 5.1開發語音識別程式時，包含了標頭檔案“sphelper.h”和庫檔案“sapi.lib”。編譯時出錯：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-int1>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 identifier1>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
搜尋了一圈，根據大家的經驗彙總，應該是Speech程式碼編寫時間太早，語法不嚴密。而VS2005對於語法檢查非常嚴格，導致編譯無法通過。
修改標頭檔案中的以下行即可正常編譯：
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，編譯通過，下面可以正式編寫程式邏輯了。