Desktop Functions:

   Smart Device Functions:

Show Recent Changes
Subscribe (RSS)
Misc. Pages
Helpful Tools
Suggested Reading
Website TODO List
Download Visual Studio Add-In

_get_osfhandle (msvcrt)
Retrieves the operating-system file handle that is associated with the specified file descriptor.

C# Signature:

[DllImport("msvcrt.dll", SetLastError=true)]
static extern SafeFileHandle _get_osfhandle(int fd);

Alternative Managed API:

Do you know one? Please contribute it!


Returns an operating-system file handle if fd is valid. Otherwise, the invalid parameter handler is invoked, as described in Parameter Validation. If execution is allowed to continue, this function returns INVALID_HANDLE_VALUE (-1) and sets errno to EBADF, indicating an invalid file handle.

Tips & Tricks:

Please add some!

Sample Code:

Please add some!


Please edit this page!

Do you have...

  • helpful tips or sample code to share for using this API in managed code?
  • corrections to the existing content?
  • variations of the signature you want to share?
  • additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).

Access directly from VS:
Terms of Use
Edit This Page
Find References
Show Printable Version