utility.cpp

Recite(一个辅助英语学习软件源码) 该程序的UI部分使用了WTL7.5。WTL7.5可以很容易的在微软的官方网站找到

//PK 2006/07/24 - 10/18
#include "utility.h"

wstring 
c2w(const string & txt)
{	//PK 2006/07/24
	wchar_t * buf = new wchar_t[txt.length() + 1];
	mbstowcs(buf, txt.c_str(), txt.length());
	buf[txt.length()] = L'\0';
	wstring ret = buf;
	delete [] buf;
	return ret;
}

string
w2c(const wstring & txt)
{	//PK 2006/07/24
	char * buf = new char[txt.length() + 1];
	wcstombs(buf, txt.c_str(), txt.length());
	buf[txt.length()] = '\0';
	string ret = buf;
	delete [] buf;
	return ret;
}

string 
ulong2c(const unsigned long l)
{	//PK 2006/09/22
	char buf [20];
	_ltoa(l, buf, 10);
	return buf;
}

wstring 
ulong2w(const unsigned long l)
{	//PK 2006/08/02
	wchar_t buf [20];
	_ltow(l, buf, 10);
	return buf;
}

wstring 
time2w(const unsigned int seconds)
{	//PK 2006/08/02
	wstring txt;
	wchar_t buf[10];

	unsigned int hours = seconds / 3600;
	if (hours < 10) txt += L"0";
	_itow(hours, buf, 10);
	txt = txt + buf + L":";
	
	unsigned int minutes = (seconds % 3600) / 60;
	if (minutes < 10) txt += L"0";
	_itow(minutes, buf, 10);
	txt = txt + buf + L":";
	
	unsigned int remains = seconds % 60;
	if (remains < 10) txt += L"0";
	_itow(remains, buf, 10);
	txt += buf;
	
	return txt;
}

CRandom::CRandom()
{	//PK 2006/08/14
	srand(static_cast<unsigned int>(time(NULL)));
}

int 
CRandom::get_number(int low, int up)
{	//PK 2006/08/10 - 14
	int range = up - low + 1;
	return (rand() % range) + low;
}