WINDOW中判断文件是否存在的方法

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1. //window操作系统上，判断指定文件是否存在
3. //参数 strFileName
5. //方法1
6. POFSTRUCT lpOpenBuf = new OFSTRUCT;//注意delete
7. HFILE hFile = OpenFile(strFileName, lpOpenBuf, OF_EXIST);
8. if (hFile != HFILE_ERROR)
9. {
10.     //file exist
11. }
13. //方法2
14. ifstream infile(strFileName);
15. if (!infile)
16. {
17.     //file not exist
18. }
20. //方法3
21. #include <shlwapi.h>
22. #pragma comment(lib, "Shlwapi.lib")
23. BOOL ret = PathFileExists(strFileName);
25. //方法4
26. FILE* fp = NULL;
27. fp = fopen(strFileName, "r");
28. if (fp != NULL)
29. {
30.     //file exist
31. }
33. //方法5
34. HANDLE hFind = INVALID_HANDLE_VALUE;
35. WIN32_FIND_DATA data;
36. hFind = FindFirstFile(strFileName, &data);
37. if (hFind)
38. {
39.     //file exist
40. }
41. FindClose(hFind);
43. //方法6
44. HANDLE hFile = CreateFile(strFileName, GENERIC_ALL, FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL);
45. DWROD err = GetLastError();
46. if (err = ERROR_FILE_NOT_FOUND)
47. {
48.     //FILE NOT FOUND
49. }
50. if (hFile)
51. {
52.     CloseHandle(hFile);
53. }
55. //方法7
56. CFileFind find;
57. int ret = find.FindFile(strFileName);
58. if (ret == 0)
59. {
60.     //file not found
61. }

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