PathFileExists用法－－使用#include

全栈程序员-站长 • 2022年7月12日上午11:16 • 未分类 • 阅读 25

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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; 

    } 

}