#include <windows.h>
#include <string>
#include <cstdio>
using namespace std;

bool SearchFileRecursive(const wstring& file, const wstring& directory, wstring& found, int maxdepth, int depth = 0)
{
	WIN32_FIND_DATAW fData;
	wstring mask = directory + L"\\*.*";

	HANDLE search = FindFirstFileW(mask.c_str(), &fData);

	if (search == INVALID_HANDLE_VALUE) return false;
	else
	{
		do
		{
			if (!wcscmp(fData.cFileName, L".") || !wcscmp(fData.cFileName, L"..")) continue;
			found = directory + L"\" + fData.cFileName;

			if (file == fData.cFileName)
			{
				return true;
			}
			else
				if (fData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
				{
					if (depth < maxdepth &&
						SearchFileRecursive(file, found, found, maxdepth, depth + 1))
					{
						return true;
					}
				}

		} while (FindNextFileW(search, &fData));
	}

	FindClose(search);
	return false;
}

void main()
{
	const int MAX_RECURSION_DEPTH = 3;
	wstring found;
	SearchFileRecursive(L"3b.doc", L"d:", found, MAX_RECURSION_DEPTH);
}