Currently PostMessage/GetMessage I think are syscalls, TranslateMessage/Dispatch... | Hacker News

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yuhong on May 22, 2014 | parent | context | favorite | on: Principles of high-performance programs (2012)

Currently PostMessage/GetMessage I think are syscalls, TranslateMessage/DispatchMessage are not most of the time.

quotemstr on May 22, 2014 [–]

DefWindowProc is a system call. Really, switching to kernel mode is not as expensive as people suppose.

yuhong on May 22, 2014 | [–]

DefWindowProc is not always a system call. It depends on the message being tried for example.

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