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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>
voidmain( void)
{
// Valid file path name (file is there).
charbuffer_1[] = "C:\\TEST\\file.txt";
char*lpStr1;
lpStr1 = buffer_1;
// Invalid file path name (file is not there).
charbuffer_2[] = "C:\\TEST\\file.doc";
char*lpStr2;
lpStr2 = buffer_2;
// Search for the presence of a file with a true result.
intretval = 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;
}
}
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编译后，却发现一个错误：error LNK2001: unresolved external symbol __imp__PathFileExistsA@4
网上搜索了下，发现是因为没有添加相应的lib。添加lib的方法网上有不少，这里使用下面的方法：
这样，就可以通过编译了！
<Linker from : http://www.cnblogs.com/joeblackzqq/archive/2010/11/09/1872309.html>
转载于:https://www.cnblogs.com/MMLoveMeMM/articles/3095112.html
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/158065.html原文链接：https://javaforall.net
