求助，同样代码昨天运行正常。今天handle=_findfirst(inpath.c_str(),&fileinfo); 找不到文件

#include<stdio.h>
#include<string>
#include<io.h>

int main()
{
    std::string inpath = "E:\\c语言视频教程\\Download\\*.*";

    long handle;
    struct _finddata_t fileinfo;

    handle=_findfirst(inpath.c_str(),&fileinfo);
    if (handle == -1)
        return -1;
    do
    {
        printf("%s\n", fileinfo.name);
    }
    while (!_findnext(handle,&fileinfo));

    _findclose(handle);
    return 0;
}