Thanks for you detailed response.
I found an undocumented (and presumably unsupported) system trap called
HwrLCDSleep(Boolean, Boolean)
which seems to work on Visor and PalmVx models I have here. It appears to
switch off the screen but not progress to sleep mode. Eventually, it will go
to sleep
>From a user experience point of view, I wouldn't suggest turning the screen
off during a long computation. Remember that a CPU running flat out doing
computation will use enough power that keeping the screen on won't have that
big an effect on battery life. Normally, the CPU is dozing most of the
Say my app was about to perform a very long computational excercise (like
calculate pi to the nth decimal place) (this isn't my application but it
demonstrates the issues). Would it be possible to switch the screen off to
conserve power but effectively stay in running mode?
TIA,
- John
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F
