PathIsReletive_Windows_不太可靠

void main()
{
    const int ARRAY_LEN = 20;
    char szPathTest[][ARRAY_LEN] = {"C:\What.nani", "Why.nani", ".\Where.nani", "..\When.nani", "...How.nani", "?Why.nani",  "...\How.nani"    };
    int  len = sizeof(szPathTest) /  sizeof(szPathTest[0]);

    for(int i = 0; i < len; i++)
    {
        WCHAR szBuffer[ARRAY_LEN] = {0};
        MultiByteToWideChar(CP_UTF8, NULL, szPathTest[i], -1, szBuffer, ARRAY_LEN);
        if(PathIsRelative(szBuffer))
            cout<<szPathTest[i]<<"	"<<"YES"<<endl;
        else
            cout<<szPathTest[i]<<"	"<<"NO"<<endl;
    }


    system("pause");
}

测试结果：

C:What.nani    NO
Why.nani        YES
.Where.nani    YES
..When.nani    YES
...How.nani     YES
?Why.nani       YES
...How.nani    YES
请按任意键继续. . .

结论：PathIsRelative使用前一定要保证传进来的Path是有效的。它本身并不能保证。