https://learn.microsoft.com/en-us/windows/win32/api/winreg/nf-winreg-regcreatekeyexa?redirectedfrom=MSDN
RegCreateKeyExA function (winreg.h) - Win32 apps | Microsoft Learn
Creates the specified registry key. If the key already exists, the function opens it. Note that key names are not case sensitive. (ANSI)
functionhappsmicrosoftlearn