October 2001
Intermediate to advanced
704 pages
19h 33m
English
Content preview from Palm OS Programming, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Device Reset
There are a few neat debugging aids you can perform directly on the handheld:
- Soft reset
Press the Reset button with a blunt, thin instrument (e.g., an unfolded paper clip, or the tool embedded inside many a stylus). This resets the dynamic heap but not the storage heaps, so no data is lost. Each installed application receives the
sysAppLaunchCmdSystemResetlaunch code. This reset also removes any orphaned chunks in the storage heap (chunks that are not members of any database).- Hard reset
Press and release the Reset button while holding down the Power key. You are provided with the option to erase everything in RAM, including all your data.
- Debug reset
Press (and release) the Reset button while pushing the Down-arrow key. This puts the Palm device into debug mode, where it waits for a low-level debugger (like PalmDebugger) to connect. You see a flashing box in the upper left.
- No-notify reset
Pressing (and release) the Reset button while holding down the Up-arrow key. The OS boots without sending reset launch codes to each application. This is essential if you have a bug in your
PilotMain(like trying to access globals without checking the launch code).
Note
It’s not uncommon to accidentally access globals when you
shouldn’t in your PilotMain (the typical
culprit is the failure to check the launch code). You can get into a
vicious cycle in such cases. After a reset, your application is sent
the sysAppLaunchCmdSystemReset launch code, at which point you access globals, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.