Daniel
Wed May 25 16:10:15 CDT 2005
Thanks, I will keep that in mind, Dani
"Paul G. Tobey [eMVP]" <ptobey no spam AT no instrument no spam DOT com>
wrote in message news:eCU9YmWYFHA.3584@TK2MSFTNGP12.phx.gbl...
> It's maximum error if you just truncate is 0.9999 of a pixel, so you might
> not get exactly what you thought was right, but I'd be surprised if anyone
> actually noticed.
>
> Paul T.
>
> "Daniel Mattsson" <danmat378852@bredband.net> wrote in message
> news:OW7fdfWYFHA.2508@TK2MSFTNGP15.phx.gbl...
>> Thanks Paul, I did a typecast to int and it seems to work as expected:
>>
>> screenx = (int)( ( absolutex / 65535.0 ) * screenwidth );
>>
>> but your solution is perhaps better.
>>
>>
>>
>> "Paul G. Tobey [eMVP]" <ptobey no spam AT no instrument no spam DOT com>
>> wrote in message news:ufRg5YWYFHA.3184@TK2MSFTNGP15.phx.gbl...
>>> Here's how I implement round():
>>>
>>> #define round(d) (int)( (d < 0) ? (d-0.5) : (d + 0.5) )
>>>
>>> Paul T.
>>>
>>> "Daniel Mattsson" <danmat378852@bredband.net> wrote in message
>>> news:eksaWVWYFHA.1796@TK2MSFTNGP15.phx.gbl...
>>>> Thanks, you are probably right.
>>>>
>>>> How to include the round() function to the driver, I get an error
>>>>
>>>> error C3861: 'round': identifier not found, even with
>>>> argument-dependent lookup
>>>>
>>>> And the help section shows no requirements or header file for that
>>>> function?
>>>>
>>>> Any ideas?
>>>>
>>>> "Paul G. Tobey [eMVP]" <ptobey no spam AT no instrument no spam DOT
>>>> com> wrote in message news:OuAW0AWYFHA.2796@TK2MSFTNGP09.phx.gbl...
>>>>> Well, based on the documentation of mouse_event(), it *sounds* like
>>>>> the absolute coordinate range is 0-65535 and that corresponds to
>>>>> 0-<screen width or height>, so it should be a simple division problem:
>>>>>
>>>>> screenx = round( ( absolutex / 65535.0 ) * screenwidth );
>>>>>
>>>>> should be pretty close, I think.
>>>>>
>>>>> Paul T.
>>>>>
>>>>> "Daniel Mattsson" <danmat378852@bredband.net> wrote in message
>>>>> news:OoI$Y2VYFHA.616@TK2MSFTNGP12.phx.gbl...
>>>>>> Hi, I´m trying to prevent some mouse messages to be forwarded to some
>>>>>> applications, but the mouse driver gives me the absolute mouse
>>>>>> coordinates.
>>>>>>
>>>>>> How could I convert them to screen coordinates?
>>>>>>
>>>>>> Thanks for helping me out, Dani
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>