RE: Dumbfounded: How Palm OS generates unique record IDs
Looks like a bug in the StyleTap implementation of the File Manager. But do you need to set the UIDs in the first place? If not, just set them all to zero, and let the system assign the UIDs. There are situations where you might want to assign your own UIDs. For instance, I use them to look up barcodes and phone numbers. But you have to do extra work in that case, to avoid duplicates. From: Jonathan Carse [mailto:jonathan.ca...@gmail.com] Sent: 01 April 2009 10:33 To: Palm Developer Forum Subject: Re: Dumbfounded: How Palm OS generates unique record IDs Reading this again I will clarify: the problem occurs on top of the Styletap platform, running on top of a Windows Mobile Device Emulator. Cheers. On Wed, Apr 1, 2009 at 12:28 PM, Jonathan Carse jonathan.ca...@gmail.com wrote: Hey folks, Still trying to get my application running with Styletap. This time I've generated a PDB database from my Access one using the format described here: http://www.nsbasic.com/palm/info/technotes/TN02a.htm The problem: I assign each my records a unique ID when I generate the file, starting at 1. But, when I add a record on the device, for some reason the new record gets the ID of 2, even though it's already taken. How can this be? Doesn't the device check to see if the ID already exists in the database? Since I saw there's a field called Unique ID Seed at offset 0x44 in the PDB file (not really documented), I tried looking at what the field has in a normal situation (I exported the same database from the Palm Emulator). The seed had the value of 0x4000 (UInt32). I tried re-generating my database with that value for unique ID seed. Then, the device not only keeps insisting on writing 2 as the new ID, but changed the unique ID seed to 0x0003 (?!?!?!?) What the hell is going on, does anybody know? Thanks! :) Jonathan -- For information on using the ACCESS Developer Forums, or to unsubscribe, please see http://www.access-company.com/developers/forums/ -- For information on using the ACCESS Developer Forums, or to unsubscribe, please see http://www.access-company.com/developers/forums/
Re: Dumbfounded: How Palm OS generates unique record IDs
Reading this again I will clarify: the problem occurs on top of the Styletap platform, running on top of a Windows Mobile Device Emulator. Cheers. On Wed, Apr 1, 2009 at 12:28 PM, Jonathan Carse jonathan.ca...@gmail.comwrote: Hey folks, Still trying to get my application running with Styletap. This time I've generated a PDB database from my Access one using the format described here: http://www.nsbasic.com/palm/info/technotes/TN02a.htm The problem: I assign each my records a unique ID when I generate the file, starting at 1. But, when I add a record on the device, for some reason the new record gets the ID of 2, even though it's already taken. How can this be? Doesn't the device check to see if the ID already exists in the database? Since I saw there's a field called Unique ID Seed at offset 0x44 in the PDB file (not really documented), I tried looking at what the field has in a normal situation (I exported the same database from the Palm Emulator). The seed had the value of 0x4000 (UInt32). I tried re-generating my database with that value for unique ID seed. Then, the device not only keeps insisting on writing 2 as the new ID, but changed the unique ID seed to 0x0003 (?!?!?!?) What the hell is going on, does anybody know? Thanks! :) Jonathan -- For information on using the ACCESS Developer Forums, or to unsubscribe, please see http://www.access-company.com/developers/forums/
Dumbfounded: How Palm OS generates unique record IDs
Hey folks, Still trying to get my application running with Styletap. This time I've generated a PDB database from my Access one using the format described here: http://www.nsbasic.com/palm/info/technotes/TN02a.htm The problem: I assign each my records a unique ID when I generate the file, starting at 1. But, when I add a record on the device, for some reason the new record gets the ID of 2, even though it's already taken. How can this be? Doesn't the device check to see if the ID already exists in the database? Since I saw there's a field called Unique ID Seed at offset 0x44 in the PDB file (not really documented), I tried looking at what the field has in a normal situation (I exported the same database from the Palm Emulator). The seed had the value of 0x4000 (UInt32). I tried re-generating my database with that value for unique ID seed. Then, the device not only keeps insisting on writing 2 as the new ID, but changed the unique ID seed to 0x0003 (?!?!?!?) What the hell is going on, does anybody know? Thanks! :) Jonathan -- For information on using the ACCESS Developer Forums, or to unsubscribe, please see http://www.access-company.com/developers/forums/
displaying Bitmaps correctly
Hello,
I'm desperatly looking for code samples on how to display bitmaps on TX.
I'm able to display a 24 color bitmap but the resolution is just bad.
I have several bitmaps I got from the web also 24 color and they display fine,
but the ones I create with photoshop do not display very good as the colors are
completly destroyed.
when I try to compare the structure of the bitmaps, there does not seem to be
any difference reported by photoshop but one displays fine and the other does
not.
So far I have had to settle for low res bitmap display but I would like to
update the application UI to use more modern bitmaps like the ones they use in
the home screen and really be able to use the TX's high resolution screen.
I'm using cw 9.3 and pilcr for development tools
This is the code I'm using to display the bitmaps
void drawBitmap(UInt16 Bitmap, UInt16 X, UInt16 Y)
{
MemHandle h;
BitmapType* bmpP;
Coord width, height;
WinHandle winH = WinGetDrawWindow();
WinDrawOperation oldMode;
WinPushDrawState();
h = DmGet1Resource(bitmapRsc, Bitmap);
bmpP = (BitmapType*)MemHandleLock(h);
oldMode = WinSetDrawMode(winPaint);
WinPaintBitmap (bmpP, X, Y);
MemHandleUnlock(h);
DmReleaseResource(h);
WinSetDrawMode(oldMode);
WinPopDrawState();
}
and this is the resource code
BITMAP splashBM
BEGIN
BITMAP screen_saver.bmp BPP 8 DENSITY 2 COMPRESS TRANSPARENTINDEX 0
END
Same code is used to display the Palm images I got from the web and the images
I created with photoshop
Can anyone help help?
Thanks a bunch
Luis,
_
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Re: displaying Bitmaps correctly
luis maldonado wrote: Hello, BITMAP splashBM BEGIN BITMAP screen_saver.bmp BPP 8 DENSITY 2 COMPRESS TRANSPARENTINDEX 0 END use BPP 16, conversion from truecolor to palette almost always looks bad. -- For information on using the ACCESS Developer Forums, or to unsubscribe, please see http://www.access-company.com/developers/forums/
