deltaLock locks your Pocket PC's screen and buttons while it's in your pocket playing music or doing whatever would require it to stay switched on.

To lock your screen simply launch deltaLock and your screen will either turn black or off, depending on the features of your display driver.

To unlock your screen again, press and hold down two hardware buttons. The default IDs of these buttons are 195 and 198, which correspond to the "Windows" and "OK" buttons of a HTC Blue Angel but may vary with different hardware.

deltaLock is distributed under the GPL, so you might also consider it freeware.

To install, download the binary below, extract the zip file, then run the included cab on your Pocket PC.

Update Description:

v0.05:

- Distributed as self-installing, easily-uninstalling .cab.

- Can be configured to not hog the focus or just blank the screen.

- Sports new "yellow lock" icons.

- Waits for buttons to be released before unlocking.

v0.04:

- Split off configuration resulting in faster startup times.

- Watchdog task switches backlight back off should user interaction turn it on.

- Enhanced GUI, configurability and documentation.

v0.03:

- Major rewrite of main program, now using GAPI.

- Screen now gets turned off; two hardware buttons held down unlock it.

- Settings are stored in the registry.

- Configuration interface is accessible via command line parameter "/C".

v0.02:

- Black window; hardware button unlocks screen.

- Settings stored in an .ini file.

- Edit: compability problems, release scrapped.

v0.01:

- Initial release.

- Dark background; four GUI elements unlock screen.

- Not very beautiful, but working.