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qstring转换成unsigned char

时间: 2023-04-19 22:03:35 浏览: 1592

C++日志模块DLL，源码

QT版本 //xxxx.h //log level #define LL_DEBUG 0 #define LL_INFO 1 #define LL_WARN 2 #define LL_ERROR 3 #define LL_ALARM 4 #define GetCurFileName (__FILE__) #define GetCurCodeLine (__LINE__) #define GetCurCodeFunctionName (__FUNCTION__) #define Write_Log(LEVEL, FMTLOG) WriteLog(LEVEL, FMTLOG, GetCurFileName, GetCurCodeLine, GetCurCodeFunctionName) void WriteLog(int, QString, QString, int, QString); //xxxx.cpp void WriteLog(int loglevel, QString strlogstr, QString strfilename, int iline, QString strfunname) { QString g_logdllpath(g_runPath + "/dependences/LoggingModeDLL.dll"); HINSTANCE hDll = LoadLibrary(g_logdllpath.toStdWString().data()); typedef int (__cdecl *MYFUNC)(int, char*, char*, int, char*); MYFUNC execfunc = (MYFUNC)GetProcAddress(hDll, "WriteLog"); execfunc(loglevel, const_cast<char*>(strlogstr.toLatin1().data()), const_cast<char*>(strfilename.toLatin1().data()), iline, const_cast<char*>(strfunname.toLatin1().data())); } MFC 版本 //xxxx.h //log level #define LL_DEBUG 0 #define LL_INFO 1 #define LL_WARN 2 #define LL_ERROR 3 #define LL_ALARM 4 #define GetCurFileName (__FILE__) #define GetCurCodeLine (__LINE__) #define GetCurCodeFunctionName (__FUNCTION__) #define Write_Log(LEVEL, FMTLOG) WriteLog(LEVEL, FMTLOG, GetCurFileName, GetCurCodeLine, GetCurCodeFunctionName) void WriteLog(int, CString, CString, int, CString); void WriteLog(int loglevel, CString strlogstr, CString strfilename, int iline, CString strfunname) { CString g_logdllpath(".\\LoggingModeDLL.dll"); HINSTANCE hDll = LoadLibrary(g_logdllpath.GetBuffer()); typedef int (__cdecl *MYFUNC)(int, char*, char*, int, char*); MYFUNC execfunc = (MYFUNC)GetProcAddress(hDll, "WriteLog"); execfunc(loglevel, const_cast<char*>(strlogstr.GetBuffer()), const_cast<char*>(strfilename.GetBuffer()), iline, const_cast<char*>(strfunname.GetBuffer())); }

可以使用QString的toUtf8()方法将QString转换为QByteArray，然后使用QByteArray的data()方法将其转换为unsigned char数组。示例代码如下： QString str = "Hello World"; QByteArray byteArray = str.toUtf8(); const unsigned char* data = byteArray.data();

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