At 01:50 AM 12/11/00 -0500, you wrote:
>Hal Mueller wrote:
>
>> I need to map from screen coordinates to real physical
>> measurements--that is, I need to be able to draw a 1 centimeter line,
>> whether I'm on a Palm III or an m100.
>>
>> Any suggestions? I don't see any API to determine pixel size.
>
>Heh, your probably stuck with using a ruler, and some case statements.
>Another option might be to have the user calibrate the app with a real
>ruler. Of course, that defeats some of the purpose, but...
>
I know this may sound stupid (hey, I have not even wrote my own first
program yet; I am still trying to get somewhere in the book ;), but
couldn't you ask the Palm to identify itself (Palm III, V, MCMLXVII? Isn't
a way to do so? If that is the case, you can then figure out the screen
dpi for each device *before* and then go from there (I bet they are written
somewhere). Another suggestion: can't you just *ask* the user which Palm
he/she/it is using?
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
