The final
pCreateExParams parameter to
the
CreateFile2 function
is optional.
What happens if I pass NULL?
If you pass NULL as the
pCreateExParams parameter,
then the function behaves as if you had passed
a pointer to this structure:
CREATEFILE2_EXTENDED_PARAMETERS defaultCreateExParams =
{
sizeof(defaultCreateExParameters), // dwSize
0, // dwFileAttributes
0, // dwFileFlags
0, // dwSecurityQosFlags
NULL, // lpSecurityAttributes
NULL, // hTemplateFile
};
Raymond has been involved in the evolution of Windows for more than 30 years. In 2003, he began a Web site known as The Old New Thing which has grown in popularity far beyond his wildest imagination, a development which still gives him the heebie-jeebies. The Web site spawned a book, coincidentally also titled The Old New Thing (Addison Wesley 2007). He occasionally appears on the Windows Dev Docs Twitter account to tell stories which convey no useful information.
0 comments