I've been working on a Pocket PC application that includes the calculators and a lap counter / timing application.

So far, I have not found any way to trap the buttons other than the middle scroll button. If the application buttons are assigned to the <up>, <down>, etc button, I can get the buttons. My Pocket PC has one button on the side, and four application buttons on the front.

Since I can get the <up>, etc buttons, I'm going to use them for action commands, at least temporarily. Certain parts of the screen will be "hot" also. But first I've got to get the screen laid out. I've attached a screen shot of the Pocket PC Emulator with the lap counter screen opened.

My thinking is to have the running time at the top, then the lap splits on the right. The lap splits could be toggled to elapsed time by touching them perhaps.

What I'm thinking for action commands is to use the scroll up button as the lap advance, and the down button as the reset. Touching the lap count would also advance the lap count.

What I haven't worked out at all is cuts. Do I just time laps until an 11th lap is counted? I could use a time interval like 3 seconds after the 10th lap to determine whether to stop at 10 or 11 laps.

The background and foreground colors will be user selectable. I thought black would work well in the sun, but actually a white background with no backlighting seems best in sunlight.

If anyone would like to collaborate on this project, please let me know or respond here. If you have screen layout ideas, you can load the image files into Paint or another program and mock up what you think would work well.