ATL / WTL / STL

void logger::calibrateFile(){
	time_t t = time(0);
	struct tm now;
	errno_t err = localtime_s(&now, &t );//leak detected here???
	if (err)
    {
		printf("Invalid argument to localtime_s (logger).");
		exit(1);
	}
	char st[ 10 ];//guessing
	_itoa_s(now.tm_year + 1900, st, 10);
	string fname = (string)st;
	fname += '-';
	_itoa_s(now.tm_mon + 1, st, 10);
	fname += (string)st;
	fname += '-';
	_itoa_s(now.tm_mday, st, 10);
	fname += st;
	fname += ".txt";
	string _logFile = this->logDir + fname;
	if (this->logFile.compare(_logFile) != 0){
		if (this->flog.is_open())
			this->flog.close();
		this->logFile = _logFile;
		// file allready exists, we dont need to write an unicode byte
		if (this->fileExists(this->logFile.c_str())) this->fresh = false; 
		this->flog.open(this->logFile.c_str(), fstream::out | fstream::app);
		if (!this->flog.fail()){
			printf("IP.logFile = %s\n", this->logFile.c_str());
			/*if (this->fresh)
				this->writeUnicodeByte();//writes unicode byte*/
		}else
			printf("IP.logFile = failed (%s)!\n", this->logFile.c_str());
	}
	//delete now; //tried to make now a dynamic pointer and delete later on, but it didn't work, leak still was reported there multiple times
}

#include <string>
#include <fstream>
#include <iostream>
#include <stdio.h>  /* defines FILENAME_MAX */
#include <ctime> //to get datetime


//#ifdef WINDOWS //some day
    #include <direct.h>	//to get current directory
    #define GetCurrentDir _getcwd
/*#else
    #include <unistd.h>
    #define GetCurrentDir getcwd
 #endif*/
class logger
{
private:
    ofstream flog;
    bool fresh;                         //is our log file freshly created or reopened for writting?
    string logDir;                      // ".\log\" by default :)
    string logFile;                     // ".\log\YYYY-MM-DD.txt" by default :)
    //void flush();                     //my flush
    bool fileExists(const char* fname); //checks if file exists
    void directWrite(char* logline);    //writes directly bypassing argument check
    //void writeUnicodeByte();          //writes unicode byte to fresh file
public:
    void calibrateFile();				//checks for the current date, opens log file and prepares it for writing
}

lpCreateParams	0x00000000	                void *
hInstance	0x00400000 {unused=9460301 }	HINSTANCE__ *
hMenu	        0x00000000 {unused=??? }	HMENU__ *
hwndParent	0x008a06be {unused=0 }	        HWND__ *
cy	        294	int
cx	        278	int
y	        673	int
x	        571	int
style	        -771751935	                long
lpszName	0x00000000 <Bad Ptr>	        const char *
lpszClass	0x00168828 "Afx:00400000:800"	const char *
dwExStyle	0	                        unsigned long

#ifdef WIN32
  #include <windows header>
#else
  #include <syslog.h>
#endif