WINDOW中判断文件是否存在的方法
//window操作系统上，判断指定文件是否存在//参数 strFileName
//方法1
POFSTRUCT lpOpenBuf = new OFSTRUCT;//注意delete
HFILE hFile = OpenFile(strFileName, lpOpenBuf, OF_EXIST);
if (hFile != HFILE_ERROR)
{
//file exist
}
//方法2
ifstream infile(strFileName);
if (!infile)
{
//file not exist
}
//方法3
#include <shlwapi.h>
#pragma comment(lib, "Shlwapi.lib")
BOOL ret = PathFileExists(strFileName);
//方法4
FILE* fp = NULL;
fp = fopen(strFileName, "r");
if (fp != NULL)
{
//file exist
}
//方法5
HANDLE hFind = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA data;
hFind = FindFirstFile(strFileName, &data);
if (hFind)
{
//file exist
}
FindClose(hFind);
//方法6
HANDLE hFile = CreateFile(strFileName, GENERIC_ALL, FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL);
DWROD err = GetLastError();
if (err = ERROR_FILE_NOT_FOUND)
{
//FILE NOT FOUND
}
if (hFile)
{
CloseHandle(hFile);
}
//方法7
CFileFind find;
int ret = find.FindFile(strFileName);
if (ret == 0)
{
//file not found
}
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