Cannot add files to .zip file - c++

Question

I tried with sample code below (from How do I use Minizip (on Zlib)?).
It does not work when adding files from a specific folder. The zipfile gets created but nothing in it. I do not understand what I am missing.
I want to zip all the files in the directory "c:\\temp1\\*".
If I hard code the filenames, as shown in below 2 lines, then they get added to the zip.
const char* Filenames[] = {"Readme.txt", "foo.bin"};
unsigned int nCount = sizeof( Filenames )/sizeof( char* );
Here is my code:
#include "stdafx.h"
#include <vector>
#include <string>
#include <fstream>
#include <windows.h>
#include <comdef.h>
#include <Shlwapi.h>
#pragma comment (lib, "Shlwapi.lib")
#include "zlib-1.2.11\zlib.h"
#include "zlib-1.2.11\zip.h"
using namespace std;
wchar_t *convertCharArrayToLPCWSTR(const char* charArray)
{
wchar_t* wString=new wchar_t[4096];
MultiByteToWideChar(CP_ACP, 0, charArray, -1, wString, 4096);
return wString;
}
std::wstring CombinePaths(std::wstring const &pattern, LPCWSTR filename) {
std::wstring tmp(pattern);
tmp.push_back('\0');
PathRemoveFileSpec(&tmp[0]);
std::wstring retVal(MAX_PATH, '\0');
PathCombine(&retVal[0], tmp.c_str(), filename);
return retVal.c_str();
}
int zip()
{
WIN32_FIND_DATA FindFileData;
HANDLE hFind;
zipFile myZip = zipOpen64("MyTest.zip", APPEND_STATUS_CREATE);
std::wstring myDir(L"C:\\temp1\\*");
hFind = FindFirstFile(myDir.c_str(), &FindFileData);
typedef std::vector<std::wstring> listofFiles;
listofFiles ff;
// List all the files in the directory
do
{
std::wstring fullPath = CombinePaths(myDir, FindFileData.cFileName);
ff.push_back(fullPath);
}
while (FindNextFile(hFind, &FindFileData) != 0);
FindClose(hFind);
bool myreturn = true;
// add files to the zip file
for ( unsigned int i = 0; i < ff.size(); i++ )
{
ifstream file(ff[i].c_str(), ios::binary | ios::in);
_bstr_t b(ff[i].c_str());
const char* filename = b;
FILE *stream;
errno_t err = fopen_s(&stream, filename, "r");
if (file.is_open() )
{
file.seekg(0, ios::end);
size_t size = file.tellg();
file.seekg(0, ios::beg);
std::vector<char> buffer(size);
if (size == 0 || file.read(&buffer[0], size))
{
zip_fileinfo zi = {0};
if (ZIP_OK == zipOpenNewFileInZip(myZip, filename, &zi, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION))
{
if (zipWriteInFileInZip(myZip, size == 0 ? "" : &buffer[0], (unsigned int) size))
myreturn = false;
zipCloseFileInZip(myZip);
file.close();
continue;
}
else
{
file.close();
return ZIP_ERRNO;
}
}
file.close();
}
if (stream != NULL)
fclose(stream);
}
ff.clear();
zipCloseFileInZip( myZip );
if (zipClose(myZip, 0))
return ZIP_BADZIPFILE;
return ZIP_OK;
}
void unzip()
{
}
int _tmain(int argc, _TCHAR* argv[])
{
zip();
unzip();
return 0;
}