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OrbWorks Community Forum • View topic - Freeze on event

Freeze on event

A PocketC native palm library offering native forms and assorted utilities

Postby Eli on Thu Feb 06, 2003 3:42 pm

I continue to have a problem with my pulldown menus. Every so often (its not consistent) after selecting from my pulldown the program executes properly and then locks up. The screen will no longer recognize any input. It is consistant in the POSE as well as the Palm.
Unfortunetly it may happen on the first event or the 20th. I have not found a pattern yet other that its when i use the pulldowns to cause an event to refresh the form.

The forms executed fine until this final event?????

any help is appreciated.



Eli
Eli
 
Posts: 42
Joined: Fri Oct 11, 2002 10:57 pm
Location: USA

Postby jstadolnik on Thu Feb 06, 2003 4:18 pm

This is the first I've heard of any such problem. Can you show your code?

How do you exit when it locks up? Soft reset?

Are you using resource or dynamic forms?

Joe

The PToolboxLib guy.
http://www.geocities.com/retro_01775/PToolboxLib.htm
jstadolnik
 
Posts: 1741
Joined: Wed Dec 06, 2000 3:34 am
Location: USA

Postby Eli on Thu Feb 06, 2003 11:36 pm

I would be glad to send you a copy. I'm not sure what part would be helpful to post. Its about 60k total.

No, I just need to press any of the buttons and it exits right out. Only the screen locks out on me.



Eli
Eli
 
Posts: 42
Joined: Fri Oct 11, 2002 10:57 pm
Location: USA

Postby jstadolnik on Thu Feb 06, 2003 11:57 pm

I'd be most curious to see the code which activates in response to menu item events.

Also, are you using resource or dynamic forms?

Joe

The PToolboxLib guy.
http://www.geocities.com/retro_01775/PToolboxLib.htm
jstadolnik
 
Posts: 1741
Joined: Wed Dec 06, 2000 3:34 am
Location: USA

Postby Eli on Fri Feb 07, 2003 12:53 am

I'm using dynamic forms. What email should i send you the code to?

PS thanks for offering. :)

Eli
Eli
 
Posts: 42
Joined: Fri Oct 11, 2002 10:57 pm
Location: USA

Postby jstadolnik on Fri Feb 07, 2003 12:57 am

jstadolnik
 
Posts: 1741
Joined: Wed Dec 06, 2000 3:34 am
Location: USA

Postby jstadolnik on Fri Feb 07, 2003 2:47 pm

You have recursive event loops in the code you sent me... which is likely the cause of the problem. See my response email for details.

Joe

The PToolboxLib guy.
http://www.geocities.com/retro_01775/PToolboxLib.htm
jstadolnik
 
Posts: 1741
Joined: Wed Dec 06, 2000 3:34 am
Location: USA

Postby jstadolnik on Mon Feb 10, 2003 7:57 pm

The root of the problem turned out to be an Fctl DRAW command in response to pop-trigger event.

Apparently, the event is received before the PalmOS is able to fully cleanup the list window from the pop-trigger. The result is the the coordinate detection scheme can get wacked. Objects end up being detected in position where they shouldn't be.

This appears to be another one of the PalmOS warts for which there is no fix. However, there're really isn't much need to do a DRAW from a pop-trigger event (doing so is very non-stardard).

Joe

The PToolboxLib guy.
http://www.geocities.com/retro_01775/PToolboxLib.htm
jstadolnik
 
Posts: 1741
Joined: Wed Dec 06, 2000 3:34 am
Location: USA


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