CODEWITHSUNDEEP
windowswinapisystemundocumented-behavior
user2431141
user2431141

Reputation: 53

Windows: Get system auto lock remaining time

How to get the remaining time to the next system auto locking or auto sleep?

Upvotes: 1

Views: 316

Answers (1)

Roger Rowland
Roger Rowland

Reputation: 26259

You can get the time to next sleep by using CallNtPowerInformation with the SystemPowerInformation option and then look at the TimeRemaining field in the returned struct. However, this can be always 0. So, let's see another approach.

  • GetLastInputInfo will give you the time (in ticks) when the last user input (such as keypress or mouse move) happened.
  • SystemParametersInfoW function with the SPI_GETSCREENSAVETIMEOUT flag will get the screensaver timeout from Windows settings (in seconds).

Combine these two with the current time and a "tick to seconds" conversion to find out how long until the screensaver fires.

Also, note that not all users have screensavers or sleep/hybernate enabled. You might have to check these too.

Upvotes: 1

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