Handle Inheritance

[ootsoo]

Hi.

Reference to MSDN under the topic pipes/Anonymous Pipe/Pipe Handle Inheritance

The following are the steps mentioned for redirecting the standard output handle to the child process

1.Call the GetStdHandle function to get the current standard output handle

2.Call the SetStdHandle function to set the standard output handle to the write handle to the pipe.

3.Create the child process

4.Call the CloseHandle function to close the write handle to the pipe.

5.Call SetStdHandle to restore the original standard output handle

My Question is whether there will be any impact in the parent process when the restoring of the original handle is not done. Please reply back. its urgent.

Moreover, the GetStdHandle() API in the step (1) is returning INVALID_HANDLE_VALUE. When does this API returns INVALID_HANDLE_VALUE. When GetLastError is called it returns 6 (invalid handle). Is there any scenario or condition in which this API return INVALID_HANDLE_VALUE.

Thanks in advance

Edited May 11, 2006 by ootsoo