PathFileExists用法－－使用#include

最新推荐文章于 2022-01-04 10:13:05 发布

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最新推荐文章于 2022-01-04 10:13:05 发布

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分类专栏： C++ 文章标签： file function search buffer path system

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BOOL PathFileExists(LPCTSTR pszPath);

Determines if a file exists.

---经检测，该函数可以检测文件或目录是否存在！

Remarks

This function tests the validity of the file and path. It works only on the local file system or on a remote drive that has been mounted to a drive letter. It will return FALSE for remote file paths that begin with the UNC names //server or //server/share. It will also return FALSE if a mounted remote drive is out of service.

为了使用PathFileExists()，必须包含头文件"shlwapi.h"，范例代码如下：

 
     #include <windows.h> 
 
     #include <iostream.h> 
 
     #include <shlwapi.h> 
 
     void main( void ) 
 
     { 
 
         // Valid file path name (file is there). 
 
         char buffer_1[] = "C://TEST//file.txt";  
 
         char *lpStr1; 
 
         lpStr1 = buffer_1; 
 
         // Invalid file path name (file is not there). 
 
         char buffer_2[] = "C://TEST//file.doc";  
 
         char *lpStr2; 
 
         lpStr2 = buffer_2; 
 
         // Search for the presence of a file with a true result. 
 
         int retval = PathFileExists(lpStr1); 
 
         if(retval == 1) 
 
         { 
 
             cout << "Search for the file path of : " << lpStr1 << endl; 
 
             cout << "The file requested /"" << lpStr1 << "/" is a valid file" << endl; 
 
             cout << "The return from function is: " << retval << endl; 
 
         } 
 
         else
 
         { 
 
             cout << "The file requested " << lpStr1 << " is not a valid file" << endl; 
 
             cout << "The return from function is: " << retval << endl; 
 
         } 
 
         // Search for the presence of a file with a false result. 
 
         retval = PathFileExists(lpStr2); 
 
         if(retval == 1) 
 
         { 
 
             cout << "/nThe file requested " << lpStr2 << " is a valid file" << endl; 
 
             cout << "Search for the file path of: " << lpStr2 << endl; 
 
             cout << "The return from function is: " << retval << endl; 
 
         } 
 
         else
 
         { 
 
             cout << "/nThe file requested /"" << lpStr2 << "/" is not a valid file" << endl; 
 
             cout << "The return from function is: " << retval << endl; 
 
         } 
 
     }