### _get_osfhandle (Windows)

Format

>     #include <io.h>
>     long _get_osfhandle(int h);

Language Level: Extension
_get_osfhandle returns the API handle corresponding to the C run-time handle defined by h.

Return Value
If the argument is valid, _get_osfhandle returns the corresponding API handle. If the argument is invalid, _get_osfhandle returns -1.

Example
This example calls fileno to obtain the C run-time standard output handle, and then maps it to an API handle. The mapped handle is used in the WriteFile system API.

    #define WIN32LEAN_AND_MEAN
    #include <windows.h>
    #include <io.h>
    #include <stdio.h>
    #include <string.h>

    char s[] = "Hello";

    int main(void) {
    HANDLE h;
    DWORD dummy;

    h = (HANDLE)_get_osfhandle(fileno(stdout));
    WriteFile(h, s, strlen(s), &dummy, NULL);
    return 0;
    }

_open_osfhandle
open -- Open File
_sopen -- Open Shared File
creat -- Create New File
fileno -- Determine File Handle
<fcntl.h>
#include