Inconsistent flicker of a static control

[jj2007]

For those who are still running Windows 7-64, attached a jewel: After years of scientific research, the author is proud to announce the discovery of a new feature: static controls may flicker or not flicker, depending on the so far undocumented SS_NOFLICKER style.

Attached the source and two executables.

[HSE]

Congratulations  :t