Windows CE mouse coordinates are a bit dodgy. Horizontal positions start at 83, whilst vertical ones start at 1...
I think I've fixed that with the update just grinding in the background.
Horizontally it now starts at 3 - so a lot better :)
I'm currently getting incorrect Windows CE maximum mouse coordinates only in portrait mode; 1-179 x 1-425 although it should be 1-240 x 1-320. O_O
I think I fixed that with the next update, too.
Can't really do an update now, though - beta of V8 is in progress. Is that OK for you?
No problem for now because I hava temporary patch solution. :-[
MOUSESTATE mx,my,b1,b2
IF PLATFORMINFO$("")="WINCE"
mx=INTEGER((mx/179)*240)
my=INTEGER((my/425)*320)
ENDIF