ATL / WTL / STL

function DetectActiveX (controlName)
    on error resume next
    dim res
    res = 0
    if IsObject(CreateObject(controlName)) then
        res = 1
    end if
    DetectActiveX = res
end function

#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <conio.h>
#include <assert.h>
#include <string>
#include <windows.h>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	char buf[1024];
	for (int i=0; i<sizeof(buf); ++i)
		buf[i] = rand()%26+'a';
	buf[sizeof(buf)-1] = 0;
	size_t nStrLen = strlen(buf);
	printf_s("str:\t%s\n", buf);
	printf_s("strlen:\t%u\n", nStrLen);

	char buf2[1024];
	DWORD nTicks;
	int n = 1000000;
	
	nTicks = GetTickCount();
	for (int i=0; i<n; ++i)
		strcpy_s(buf2, sizeof(buf2), buf);
		//strcpy(buf2, buf);
	nTicks = GetTickCount()-nTicks;
	printf_s("strcpy_s time:\t%u\n", nTicks);
	assert(strcmp(buf, buf2)==0);

	nTicks = GetTickCount();
	for (int i=0; i<n; ++i)
		strncpy_s(buf2, sizeof(buf2), buf, nStrLen);
		//strncpy(buf2, buf, nStrLen);
	nTicks = GetTickCount()-nTicks;
	printf_s("strncpy_s time:\t%u\n", nTicks);
	assert(strcmp(buf, buf2)==0);

	nTicks = GetTickCount();
	for (int i=0; i<n; ++i)
		memcpy_s(buf2, sizeof(buf2), buf, nStrLen+1);
	nTicks = GetTickCount()-nTicks;
	printf_s("memcpy_s:\t%u\n", nTicks);
	assert(strcmp(buf, buf2)==0);

	string s(buf);
	string s2;
	nTicks = GetTickCount();
	for (int i=0; i<n; ++i)
		s2 = s;
	nTicks = GetTickCount()-nTicks;
	printf_s("string:\t%u\n", nTicks);
	assert(strcmp(buf, buf2)==0);

	_getch();
	return 0;
}