Free Download
(305.57 KB)
Latest Version
Caffeine 1.97 LATEST
Operating System
Windows 7 / Windows 7 64 / Windows 8 / Windows 8 64 / Windows 10 / Windows 10 64
Author / Product
Filename
caffeine.zip
If you have problems with your Windows PC locking or going to sleep, the Caffeine desktop app will keep it awake. It works by simulating a keypress once every 59 seconds, so your machine thinks you're still working at the keyboard, so you won't lock the screen or activate the screensaver.
The icon is shown above - it's the leftmost one in the task tray, and this is all you see. Double-clicking the icon empties the coffee pot (that's what the icon is) and temporarily disables the program. Double-clicking it again refills the pot and will keep your machine awake.
By default, the app starts enabled and works every 59 seconds. There are some command-line switches you can use to alter this behavior:
However, Caffeine might interfere with some apps:
The icon is shown above - it's the leftmost one in the task tray, and this is all you see. Double-clicking the icon empties the coffee pot (that's what the icon is) and temporarily disables the program. Double-clicking it again refills the pot and will keep your machine awake.
By default, the app starts enabled and works every 59 seconds. There are some command-line switches you can use to alter this behavior:
- xx - where xx is a number which sets the number of seconds between simulated keypresses. This must be the first text on the command-line
- -startoff - application starts disabled.
- -exitafter:xx - the application will terminate after xx minutes
- -activefor:xx - the application will become inactive after xx minutes
- -inactivefor:xx - the application will become active after xx minutes
- -appexit - terminates current running instance of the application
- -appon - makes the currently running instance of the application active
- -appoff - makes the currently running instance of the application inactive
- -apptoggle - toggles the running state of the currently running instance of the application
- -apptoggleshowdlg - toggles the running state, and shows a dialog
- -replace - closes the currently running instance, replacing it
- -noicon - does not show a task tray icon
- -useshift - simulate the shift key instead of F15
- -showdlg - shows a dialog indicating whether caffeine is active
- -ontaskbar - show a taskbar button (use with -showdlg)
- -allowss - prevent sleep, but allow the screensaver to start
- -key:xx - simulate using virtual key code xx
- Note: the codes on the linked page are in Hex, convert them to decimal for use with this parameter
- -keypress - simulate a full keypress, not just a key up event
- -oldicons - use more colorful tray icons
- -darkicons - use icons which work better for dark-on-light color schemes
However, Caffeine might interfere with some apps:
- PowerPoint uses the F15 keypress to pause a video in a slide
- Google Docs/Sheets
- Terminal emulation, e.g. Putty
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