删除文件夹和文件夹下的文件

C++没有删除文件的功能，可借助windows API实现该功能，还可以依据调用C运行库函数实现删除功能。

删除文件的函数为DeleteFile

删除文件夹的函数为RemoveDirectory

参考自：https://blog.csdn.net/u012159849/article/details/79410531

删除文件夹和文件夹下的子文件函数实现如下：

BOOL DeleteDirectory(CString strPathName)
{
	//delete all files in this strPathName directory
	//note: when the file's attribute is read only, call DeleteFile fun will get 5 error.
	//need to modify file attribute
	BOOL res = FALSE;
	CFileFind tempFind;
	DWORD errorCode;
	TCHAR sTempFileFind[MAX_PATH] = { 0 };
	wsprintf(sTempFileFind, _T("%s\\*.*"), strPathName);
	BOOL IsFinded = tempFind.FindFile(sTempFileFind);
	while (IsFinded)
	{
		IsFinded = tempFind.FindNextFile();
		if (!tempFind.IsDots())
		{
			TCHAR sFoundFileName[MAX_PATH] = { 0 };
			_tcscpy(sFoundFileName, tempFind.GetFileName().GetBuffer(MAX_PATH));
			//when current filename is directory,
			if (tempFind.IsDirectory())
			{
				TCHAR sTempDir[MAX_PATH] = { 0 };
				wsprintf(sTempDir, _T("%s\\%s"), strPathName, sFoundFileName);
				if (!DeleteDirectory(sTempDir))
				{
					errorCode = GetLastError();
					TRACE(_T("Delete %s Folder Fail in %s path, error is %d.\n"), sTempDir, strPathName, errorCode);
					tempFind.Close();
					return FALSE;
				}
			}
			else
			{
				TCHAR sTempFileName[MAX_PATH] = { 0 };
				wsprintf(sTempFileName, _T("%s\\%s"), strPathName, sFoundFileName);
				//change file attribute to FILE_ATTRIBUTE_READONLY
				DWORD dwAttribute = GetFileAttributes(sTempFileName);
				if (dwAttribute & FILE_ATTRIBUTE_READONLY)
				{
					dwAttribute &= ~FILE_ATTRIBUTE_READONLY;
					SetFileAttributes(sTempFileName, dwAttribute);
				}
				if (!DeleteFile(sTempFileName))
				{
					errorCode = GetLastError();
					TRACE(_T("Delete %s File Fail in %s path, error is %d.\n"), sTempFileName, strPathName, errorCode);
					tempFind.Close();
					return FALSE;
				}
			}
		}
	}
	tempFind.Close();
	//delete this folder after delete all files in the folder
	if (!RemoveDirectory(strPathName))
	{
		errorCode = GetLastError();
		TRACE(_T("Delete %s Folder Fail, error is %d.\n"), strPathName, errorCode);
		return FALSE;
	}
	return TRUE;
}

函数调用如下：

CString deleteFolderName = L"D:\\MyDeleteFile";
if (deleteFolderName == L"")
{
	TRACE(_T("Folder Directory Does Not Exist.\n"), deleteFolderName);
	return FALSE;
}
if (!DeleteDirectory(deleteFolderName))
{
	TRACE(_T("Delete %s Folder Directory Fail.\n"), deleteFolderName);
	return FALSE;
}

参考自：https://blog.csdn.net/ss33sss/article/details/92771861

特别要注意：

当文件为只读时，不能直接被删除，需要修改其属性，去掉只读性。

调用SetFileAttributes函数。

参考自：https://blog.csdn.net/weixin_36587312/article/details/75096650