无法让复制文件工作

Question

i am just trying to use copyfile to copy a file, it is as simple as that but it wont work. i have googled it and looked at 20 links and they all say " object.CopyFile ( source, destination[, overwrite] ) "

The problem is i can't get it to copy the txt file for me, i have tryed running it as an admin but still does not work. also i need to put the source and destination as lpctstr (because it wont compile with out using Multi-Byte Character and my other code will not work unless i Use Unicode Character Set).

My code is

#include <iostream>
#include <Windows.h>

using namespace std;

int main()
{

 CopyFile("C:\\Somefolder\\file.txt","C:\\folder\\file.txt",0);
 return 0;
}

i am running windows 7, vc++ 2010, compiling as debug, sorry if i missed anything.

Answer 1

Replace the line:

CopyFile("C:\\Somefolder\\file.txt","C:\\folder\\file.txt",0);

with:

BOOL b = CopyFile("C:\\Somefolder\\file.txt","C:\\folder\\file.txt",0);
if (!b) {
    cout << "Error: " << GetLastError() << endl;
} else {
    cout << "Okay " << endl;
}

That should tell you if and why it's failing. The error code, once you have it, can be looked up here .

---

And if, as your comment indicates, you're getting ERROR_PATH_NOT_FOUND , the first thing I'd be looking at is whether the paths c:\\somefolder and c:\\folder exist as well as the actual source file c:\\somefolder\\file.txt .

One special thing to keep in mind: CopyFile won't create the directory for the target file, it has to exist before you try to copy. There are numerous ways you can do this, such as with CreateDirectory , CreateDirectoryEx or SHCreateDirectoryEx ).

Answer 2

you have to check to close the file with fclose(FILE*) if you used fopen(...) or CloseHandle(HANDLE) if you used a HANDLE for the file (like hFile...)... for me in C it works!

ANTARES (IT)