518抽奖软件源码之：删除文件夹及下面的所有文件

在开发“518抽奖软件”的时候，每次导入一批新图片的时候，要删除原来的图片文件夹。本来递归删除即可，应该很快速的，但是在windows 10下发现删除很慢，软件会卡在那里，因为windows 10的安全性，里面很多智能的检查。软件卡在那里总不行的，只能rename文件夹后，创建一个线程慢慢删除那个文件夹，请参看下面源码。

Windows 10 下删除文件夹及里面的文件源码

void Tfuns::del_folder (const WCHAR* folder){if (*folder == 0) return; //!!WCHAR suffix[64] = { 0 };WCHAR tmpFolder[MAX_PATH] = { 0 };int len = wcslen(folder);//rename后的临时文件夹的名字int seqno = 1;GET_TMPFOLDER:wcscpy(tmpFolder, folder);if (tmpFolder[len - 1] == L'\\' || tmpFolder[len - 1] == L'/')tmpFolder[len - 1] = 0;swprintf(suffix, L"_toDel%d", seqno);wcscat(tmpFolder, suffix);if (PathFileExists(tmpFolder)) {seqno++;goto GET_TMPFOLDER;}if (_wrename(folder, tmpFolder) == 0){wstring* p = new wstring(tmpFolder); //!! 必须的，线程传递参数HANDLE h = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)Thread_delFolderW, (LPVOID)p, 0, 0);CloseHandle(h);}}static DWORD WINAPI Thread_delFolderW(LPVOID lpParameter){SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);setlocale(LC_ALL, "");recursive_del(((wstring*)lpParameter)->c_str());delete ((wstring*)lpParameter);return 0;}static void recursive_del(const WCHAR* folder){WCHAR srch[MAX_PATH] = { 0 };WIN32_FIND_DATA wfd = { 0 };PathCombine(srch, folder, L"*.*");HANDLE h = FindFirstFile(srch, &wfd);if (h == INVALID_HANDLE_VALUE)return;while (1){WCHAR file[MAX_PATH] = { 0 };PathCombine(file, folder, wfd.cFileName);if (wcscmp(wfd.cFileName, L".") == 0) { ; }else if (wcscmp(wfd.cFileName, L"..") == 0) { ; }else if (PathIsDirectory(file)) recursive_del(file);else {SetFileAttributes(file, FILE_ATTRIBUTE_NORMAL);DeleteFile(file);}if (!FindNextFile(h, &wfd)) break;}FindClose(h);SetFileAttributes(folder, FILE_ATTRIBUTE_NORMAL);RemoveDirectory(folder);}