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
   
2. 
   
3. //参数 strFileName
   
4. 
   
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. }
    
12. 
    
13. //方法2
    
14. ifstream infile(strFileName);
    
15. if (!infile)
    
16. {
    
17.     //file not exist
    
18. }
    
19. 
    
20. //方法3
    
21. #include <shlwapi.h>
    
22. #pragma comment(lib, "Shlwapi.lib")
    
23. BOOL ret = PathFileExists(strFileName);
    
24. 
    
25. //方法4
    
26. FILE* fp = NULL;
    
27. fp = fopen(strFileName, "r");
    
28. if (fp != NULL)
    
29. {
    
30.     //file exist
    
31. }
    
32. 
    
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);
    
42. 
    
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. }
    
54. 
    
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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