C++ folder wont delete until I close program

Question

In a game I'm making, folders with text files inside represent world saves, In the load menu of this game I want to have an option to delete a save. I'm using currently this code to try to delete the saves:

hFind = FindFirstFile((dir+"/*").c_str(), &FindFileData);
if (hFind){
    do{
        string s = FindFileData.cFileName;
        if(s.find('.')){//prevents prossesing of "." and ".."
            DeleteFile((dir+"/"+s).c_str());
        }
    }while(FindNextFile(hFind,&FindFileData));
    CloseHandle(hFind);
}
rmdir(dir.c_str());

The only things in these folders are 3 text files so this code should be sufficient, however it isn't. What happens is all the file in the directory are deleted but not the folder, and if I try to delete this folder manually, or edit it in any way while the program is running, windows denies me access. But as soon as I close the game the folder is deleted.

I know the files inside are deleted because I tried the above code with out "rmdir(dir.c_str());" and opened the folder and all the files were gone, also with the above code if I "Delete" the save and then try to load it I there is no world and no inventory, indicating the files have been deleted.

I've tried it with removeDirectory and the same thing happens, It also says it was deleted successfully without any errors.

Why does this happen? How can I avoid this, and get it to work properly?

Any help would be greatly appreciated.

---

The problem was fixxed with the following code:

hFind = FindFirstFile((dir+"/*").c_str(), &FindFileData);
if (hFind){
    do{
        string s = FindFileData.cFileName;
        if(s.find('.')){//prevents prossesing of "." and ".."
            DeleteFile((dir+"/"+s).c_str());
        }
    }while(FindNextFile(hFind,&FindFileData));
    CloseHandle(hFind);
}
findClose(hFind);
rmdir(dir.c_str());

Answer 1

According to the RemoveDirectory documentation:

RemoveDirectory function marks a directory for deletion on close. Therefore, the directory is not removed until the last handle to the directory is closed.

Probably your program has the directory as its current working directory, or perhaps otherwise still has a handle to it open.

In windows, rmdir is a comparability function that calls the native windows functions, so it will behave the same.