The Old New Thing

Does the thread pool have different handle access privileges? Why am I getting ERROR_INVALID_HANDLE?

January 29, 2016 Jan 29, 2016 01/29/16

Raymond Chen

The most common reason for getting ERROR_INVALID_HANDLE is that you have an invalid handle.

Why is getting the HP_HASHSIZE so weird?

January 28, 2016 Jan 28, 2016 01/28/16

Raymond Chen

Second-order logic.

Why does CryptDestroyHash crash, but only sometimes?

January 27, 2016 Jan 27, 2016 01/27/16

Raymond Chen

Improper destruction leads to undefined behavior, and undefined behavior includes "crashing only sometimes".

How can I tell whether my console program was launched from Explorer or from a command prompt?

January 25, 2016 Jan 25, 2016 01/25/16

Raymond Chen

That's not actually what you want to know.

If I’m going to store a SID in a file, should I store the string form or the binary form?

January 22, 2016 Jan 22, 2016 01/22/16

Raymond Chen

Pros and cons.

What does the /V (verify) flag to XCOPY mean, and how did it get that way?

January 21, 2016 Jan 21, 2016 01/21/16

Raymond Chen

It doesn't mean much any more.

So how bad is it that I’m calling RegOpenKey instead of RegOpenKeyEx?

January 20, 2016 Jan 20, 2016 01/20/16

Raymond Chen

Mostly not bad, except for the gotcha.