WinAPI createFile function 2

Question

i wrote some code to createfile in c++ it compiles without errors, but it doesn't create any file.. Can anyone tell me what is wrong ? thanks

#include <iostream>
#include <windows.h>
#include <string>
using namespace std;

    int main()
    {
        HANDLE hfile;
        char data[] = "some text to write into file";       

        hfile = CreateFile(
               L"c:\name.txt",              
               GENERIC_WRITE, 
               0,
               NULL,
               CREATE_NEW,
               FILE_ATTRIBUTE_NORMAL,
               NULL);

        /*
        if (hFile == INVALID_HANDLE_VALUE) 
        { 
            cout << "Unable to create file \n";

        }
        */
    return 0;
    }

Please tell me you're not going to post a question on SO for every error you encounter in your app. — tenfour, Sep 22 '12 at 19:33

score 4 · Answer 1 · answered Sep 22 '12 at 19:11

4

Also in C++ you need to escape the backslash, i.e.

"C:\\mydirectory\\"...

answered Sep 22 '12 at 19:11

John Lockwood

3,787
29
27

score 2 · Answer 2 · answered Sep 22 '12 at 19:08

2

If trying to create it into the root, you may run into a permissions issue if not logged in as administrator. Try creating it in a subdirectory.

answered Sep 22 '12 at 19:08

John Lockwood

3,787
29
27

I'm administrator :) I also have tried this hfile = CreateFile( L"C:\Users\Vardan\Desktop\name.txt", GENERIC_WRITE, 0, NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL); but it didn't create any file – asdf Sep 22 '12 at 19:09
Being administrator and running the executable AS administrator are two different things. But my other answer is more to the point -- square that away then try it in a subdirectory and you should get some joy. (One way to ensure you're running as administrator is right click on the file in explorer, then "run as administrator"). – John Lockwood Sep 22 '12 at 19:13

WinAPI createFile function 2

2 Answers2