Thanks, Aaron! This is what I'll do.
Just as FYI, I initally just commented out the forward declaration, and
everything still compiled fine, as the body of this function was earlier in the
file than any call to it. Still, I had a concern that the forward declaration
was put there for a
Here are some ideas.
To learn how to segment your application, look for a file called Sections.h,
that PODS may have automatically created for you. If you cannot find this
file, try creating another dummy project of type Standard Make or Managed Make.
The comments in Sections.h will tell you
Your solution with a modal dialog box may be better. One thing that took some
getting used to for me on Palm OS was that it is not multi-threading. So, even
if your modeless dialog could pass a message back to the other form, the other
form would not process it unless you returned control (or
When the field is defined as a resource, there is a bit you can set to force
the type to NUMERIC. In pilrc, this is a keyword during definition. In PODS
resource editor, highlight the field of interest, and there's a checkbox in the
properties for NUMERIC.
I assume here that you don't want
p.s. Don't try to set Numlock for general input. I've never been able to get
that to work right, at least on earlier Palm OSes like 3.x. I suspect Palm
never really implemented that, even though there is a bit assigned for it in
the API, right alongside Caps lock.
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I'm not up on current events, but last I checked, making your application
require the Cobalt OS to run means that it won't run on most people's actual
devices, which run earlier versions. Maybe that new Lifedrive has Cobalt, I
don't know. If you're not trying to sell your application
recP1=(AddrDBRecordPtr )MemHandleLock(recH);
str = MemPtrNew(sizeof(char[1000]));
//at this point error are coming in accessing recp1-fields
StrCopy(str , recP1-fields);
len=StrLen(str);
str[len]= '\0';
It seems to me that you're copying an uninitialized block of memory to
recP1-fields .
Sorry, I was wrong. I read the code dyslexically, it looks ok.
In this case, I would take a look at recP1 and check first for an invalid
pointer (that is, did the call to lock the handle fail?), and second, that
recP1 - fields has a reasonable length and data.
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I have no idea. I assume you already tried dataviz.com , clicking on customer
support?
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What I suggest, if you're using the Palm OS Development Suite (PODS) is to run
your program under the debugger, and let it give the error message. You will
then be given the opportunity to go into the debugger. From there, hopefully a
call stack will be displayed, showing exactly where in
If you are using a .rcp file with pilrc, the simplest way to add an icon is to
add the lines
ICON icon.bmp
APPLICATIONICONNAME ID 1000 MyIcon
to that file.
icon.bmp is something you have created separately with (say) Windows Paint,
say, 22 x 22 pixels in dimension.
That will get you started.
I'm going to take a wild swing, I could be totally off-base.
Is it possible that your customer has an internal RAMDISK program or something
like that, and it's eating up most of the internal memory? I had a similar
problem, trying to put a 4 MB .pdb into a Palm with 8 MB memory. It should
Your classical approach is good, to read your code and comment out portions to
narrow down the failure. That's what I would do first.
However, failing that, I might try printing out a line to a log file every time
I allocated memory, giving the address, and every time I freed memory, again
Might be that the integer result is overflowing before conversion to double.
Try casting to double somewhere in the calculation. And hope that an optimizer
won't get too smart for you and ignore it:
double
DayToNum(int d, int h, int p)
{
return p + h * 1080 + (double) d * 1080 * 24;
}
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For RSA, there is a certain datum size that you choose, such as (say) 64 bits =
8 bytes.
If your string is shorter than that, zero-fill the 64-bit chunk before
encrypting.
If your string is longer than that, just do it 64 bits at a time, and zero-fill
the last chunk, if it doesn't come out
I don't know if it works this way, but after you delete the file, do you close
it? That is, could the file still be open somehow until you exit your
application?
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I'm not sure why this wouldn't work. Are you allocating a lot of memory? It
looks like this function only returns the free heap in k bytes, so you could
allocate 1000 bytes and not see the answer change, theoretically.
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Hmm, are you missing an end } , or was that just not picked up by this message?
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Here is a resource description for pilrc, but you can do a similar thing with
the resource editor:
// choose a resource ID for the alert
#define alertInfo 4830
ALERT alertInfo INFORMATION
BEGIN
TITLE Info
MESSAGE ^1^2^3
BUTTONS Ok
END
the ^1 ^2 and ^3 will be substituted with the
Try looking in the book, Palm OS Programmer's API Reference, in the section,
System Management, subsection Virtual File System Manager.
That said, Google the internet for a GPL library called UniForm.prc, written by
Mert Saglam. He also has source for an application, TexT (hard to Google
When you compile for release, you want to add
ADDITIONAL_COMPILER_FLAGS = -O2
to your makefile. But don't do this when compiling for debug, only just before
final testing for release. For debug, you actually want code that matches your
source line-for-line, and optimization can destroy that.
I don't know if this is the best way, but I uncomment the line at the end of
makefile like this:
## conditionally include your own custom.mk for your specific overrides or
definitions
## this is useful if you don't want to use the auto-generated.mk values
## for some reason
-include custom.mk
This is a general message that Windows puts out, in my experience, usually when
USB communication is getting disrupted.
If the symptom is that your PDA once could communicate with your PC, but no
longer can, it may be that your USB port on the PC (and especially, some
notebooks are vulnerable
Yes, this is a known issue when you enable inlining of code, and have a
multi-segment program. A few months ago, I posted something on this bug in the
Tools forum.
The bug has been filed on the gcc database, but I don't know if anyone is
actually working to fix it.
-O3 isn't all that good,
I'm having trouble understanding the help documentation included with PODS.
My task is, I want to create a (possibly large) database on the storage heap
(as opposed to a VFS memory card), and I want to know if there is enough free
space to hold it.
I see a MemCardInfo() API, is that what I
Is there any chance of losing data if the palm is not
used or not charged for a long time?
If yes , what is the duration and is there anyway of
preserving the data in such conditions?
Things stored on a memory or flash card should be safe.
However, things stored in the main battery-backed
I've been oblivious to what's been going on, since I only do freeware.
However, I would be quite concerned if there was a sudden change in business
practice from a company. For example, if company X always paid you on time,
but suddenly is falling behind by more than a month, I would be
This may give some idea of what to do, in general. After getting the handle to
the field text, be sure to set the Field's text handle to NULL. Otherwise,
things can get messed up while you're doing your processing on the text.
In my experience, the field will retain its text, as long as you
Oh, by the way, you need to set the Field's text handle to null even if you
only want to read the field's contents, for example, to copy all the text into
an array or structure of your own.
And a final thought. If you're not using the debug versions of the ROMs, you
really want to. I've
Yes, if you declare a variable static, then it will be local to the particular
file where it was declared. In other words, if you have static char myvar in
3 separate source files, they are actually 3 different variables for link
purposes.
I would look carefully through my source files, and
I can't see anything wrong without more details. It could be that this isn't a
palm error, but instead a programming logic issue.
If this happened to me, I would try one or more of the following:
1) Use a 3rd party viewer to look at the database, or else send the database to
Windows, and look
I am not aware of a supported way to put anything except text into a field. If
you were to try and cheat and draw to the area owned by the field, I'm pretty
sure that whatever you drew would not scroll with the text.
If you look on the Microsoft website, under the user interface element they
I'm not aware of any websites other than the palmsource developer pavilion
where you can get the development suite. I suspect there would be licensing
issues, since you would need to do the developer agreement to log in, there.
But it looks like you logged in, already. I'd say, give it a try
I'm not sure what OS is on your device, but if it's 6.x, then I noticed a
similar thing with lack of update in my program. Works great on OS 5.4 and
earlier, but not on 6.x
I doubt this will help you, but in my case, OS 6.x wasn't putting out enough
nilEvents, which I was using to trigger
palmgear.com seems to be the mother of all Palm software sites. They also seem
to have taken over many other places, such as www.freewarepalm.com .
One warning on freewarepalm.com - they will display your email address as
author openly. This is bad, because I never got spam until posting a
This could be due to trying to access global data during anything but a normal
launch.
If your program works well in the Emulator/Simulator but dies on a real device,
that's the footprint of this failure. There is some kind of notification
launch of the program to tell it that it has just
I would suggest not using that goto on the label CategoryChange.
Whatever code was there, just go ahead and duplicate it instead of using the
goto. It looks like the goto jumps to a different level of case statement.
I don't know for sure whether this will help your problem or not.
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I have generally set my scrollbar for a range of 0 to 4095, or some similarly
manageable number, then scale to the window being scrolled with my own code.
At least on my 160 x 160 PDA, there only seem to be about 30 steps of actual
resolution in the scroll bar when the slider is dragged. Any
You might try searching here for DIA or Dynamic Input Area. I think there
was some discussion on this a while back, maybe it's even a FAQ.
A package that was really helpful to me was at
http://sourceforge.net/projects/palmresize , but I'm not sure if that's what
you had in mind.
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I must be doing something wrong. I tried going to C/C++ Project Paths,
Libraries tab, and using Add External Library to point to the libPalmOSGlue.a
library.
But when I built the project again, I got an undefined reference, as if that
modification was being ignored.
I can always go back to
It sounds like you're using the right character to move to the next line. If
you were displaying the data in a Field, then the right character to move to
the next line would be 0x0a .
I wasn't clear on how you're displaying your data on the screen. Are you using
some kind of UI control like
I don't know if this helps you, but if you have a standard make, there will be
a makefile generated, and in my case, I just put the fully-qualified name of
the library there. Here are some lines from my makefile:
# List additional libraries to link with
# (Full or project relative path)
I ran into very similar trouble on a delay loop. It turned out to be the C
optimizer thinking it could speed up execution for me.
If you are using PODS, try setting optimization to SOME in the makefile.
If you are calling gcc directly, try the switch -O1 instead of -O3 or higher on
your
I've seen this error a long time ago when using the prc-tools command line
environment, but not on PODS. As you suspected, it can't find the sdk
directory. When you compile with -palmosN , I think the N is appended to a
standard name on a standard path. For example, -palmos5 looks for a
I don't know for sure, but maybe during your cleanup, you close a form, then
are still trying to do an action to it subsequently?
If you run the debugger alongside your simulator, it will probably point out
the exact point of failure.
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Maybe you've already solved this. If not, as a debugging measure, try
FrmReturnToForm(0) instead of specifying MainForm explicitly, to go back to the
original form.
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I'm sure you've solved your problem, already, but here's my two cents.
If you mean a red (looks magenta to me) rectangle just to the right of the
scroll bar while editing, this could be flagging a warning. This might not be
fatal, and your program might run just fine.
For example, the
What you need to do is go to the Palm developer site, and follow the download
links as if you're going to download the Emulator (which of course, you already
have). This will eventually take you to a page that offers a .zip file filled
with skins.
This does not include the Handspring skins.
Hello, experts!
I'm trying to cycle through all the possible fonts, and haven't noticed any API
call to do that, in particular. I have a vague notion that font 0 to 7 or so
exists on my device, but don't know if I can count on that in all languages,
etc. Also, I load a custom font as font
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