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OrbWorks Community Forum • View topic - Freeze on event
Page 1 of 1

PostPosted: Thu Feb 06, 2003 3:42 pm
by Eli
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

PostPosted: Thu Feb 06, 2003 4:18 pm
by jstadolnik
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

PostPosted: Thu Feb 06, 2003 11:36 pm
by Eli
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

PostPosted: Thu Feb 06, 2003 11:57 pm
by jstadolnik
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

PostPosted: Fri Feb 07, 2003 12:53 am
by Eli
I'm using dynamic forms. What email should i send you the code to?

PS thanks for offering. :)

Eli

PostPosted: Fri Feb 07, 2003 12:57 am
by jstadolnik

PostPosted: Fri Feb 07, 2003 2:47 pm
by jstadolnik
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

PostPosted: Mon Feb 10, 2003 7:57 pm
by jstadolnik
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