Thank you Richard, it works now when I used "&percent".
"Richard Burmeister" <[EMAIL PROTECTED]> wrote in message
news:46556@palm-dev-forum...
>
> > From: Iehab AL Rassan
> >
> > I have searched in the header files to see how this function defined. I
> > found datat type called "BytePtr" and the prototype defined is as
> > follows :
> >
> > UInt SysBatteryInfo(Boolean set, UIntPtr warnThresholdP, UIntPtr
> > criticalThresholdP,
> > UIntPtr maxTicksP, SysBatteryKind* kindP, Boolean*
> > pluggedIn, BytePtr
> > percentP)
> > SYS_TRAP(sysTrapSysBatteryInfo);
> >
> > I have tried to use BytePtr or even Byte with an "*" to the percentage
> > variable I am using; It does not give me any compilation error. But when
> > loads the program in the emulator and calls the function from the
program,
> > the program halts. All other functions in the program works fine
> > except this one.
>
> So you are definitely using the 3.1 SDK as Ben thought. (I thought you
were
> saying that the only error you got was not recognizing UInt8, so I didn't
> realize that you were using 3.1.)
>
> I believe that you should be able to call it like this:
>
> UInt result;
> Byte percent;
>
> result = SysBatteryInfo (false, NULL, NULL, NULL, NULL, NULL, &percent);
>
> Under the 3.5 SDK, you definitely can call it this way:
>
> UInt16 result;
> UInt8 percent;
>
> result = SysBatteryInfo (false, NULL, NULL, NULL, NULL, NULL, &percent);
>
> The only difference between the two sets of code is that the 3.5 version
> uses the new data types (which are not defined in the 3.1 SDK).
>
> Is your code the same as mine?
>
> Exactly how does the program halt? Do you get any error messages?
>
>
>
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