从路径中提取文件名

好的，我有以下内容:

wchar_t **filePathList;

保存正在添加到列表框中的文件列表。问题是它们显示了整个文件路径，而我只想得到文件名。我想过使用:

wchar_t *tempChar;

从filePathList的末尾开始，并返回，直到我得到一个。问题是我不确定该如何处理。这是我目前得到的代码:

afx_msg void Send::OnDropFiles(HDROP hDropInfo)
{
    if(uploadInProgress)
    {
        MessageBox(L"Please wait for current upload to finish before adding files", L"Upload in progress", MB_OK);
        return;
    }
    int len;
    int prevNFiles = nFiles;
    wchar_t **buffer = filePathList;
    wchar_t *tempChar = NULL;
    // get number of files dropped into window
    nFiles += DragQueryFile(hDropInfo, 0xFFFFFFFF, NULL, 0);
    filePathList = (wchar_t**)malloc(nFiles*sizeof(wchar_t*));
    if(!filePathList)
    {
        MessageBox(L"FilePath list memory allocation failed", L"Error");
        nFiles = 0;
        if(buffer)
        {
            for(int i=0; i<prevNFiles; i++)
            {
                if(buffer[i]) free(buffer[i]);
            }
            free(buffer);
        }
        return;
    }
    memset(filePathList, 0, nFiles*sizeof(wchar_t*));
    // get file names
    for(int i=0; i<nFiles; i++)
    {
        if(i < prevNFiles)
        {   // previously entered files
            filePathList[i] = buffer[i];
            continue;
        }
        // newly dropped files
        len = DragQueryFile(hDropInfo, i-prevNFiles, NULL, 0)+1;    // 1 for 
        tempChar = (wchar_t*)malloc(len*sizeof(wchar_t));
        filePathList[i] = (wchar_t*)malloc(len*sizeof(wchar_t));
        int index = len;
            // Attempting to iterate through the path to get the file name
        while(filePathList[i][index] != '')
        {
            tempChar = filePathList[index];
            index--;
        }
        filePathList[i] = tempChar;
        if(!filePathList[i])
        {
            MessageBox(L"FilePath memory allocation failed", L"Error");
            for(int j=0; j<i; j++)
            {
                if(filePathList[j]) free(filePathList[j]);
            }
            free(filePathList); filePathList = NULL;
            nFiles = 0;
            break;
        }
        len = DragQueryFile(hDropInfo, i-prevNFiles, filePathList[i], len);
    }
    if(buffer) free(buffer);
    // display files
    UpdateFileListDisplay();
}

问题是Visual Studio将tempChar报告为"坏的ptr"。我承认在编程方面我还是个新手，对指针知之甚少，更不用说双指针了。但是任何帮助都会非常感激。谢谢你。