OpenEuphoria

1. win32lib: Weird problems out of the blue.

• Posted by Anando Banerjee <anandobanerjee at rediffmail.com> Jun 06, 2005
• 535 views

I am trying to develop an accounting package with Euphoria & Win32lib. So far, I
have about 28 files (inclusive of all .e .ew .exw files). I normally edit my code
with Mike's Editor and then run direct from the editor to test & debug. My OS is
Win98SE.

Symptoms: The first 5-6 times everything works okay, then suddenly my main
window doesn't show, though the password pop-up does appear. If I continue to
try, I eventually end up with the infamous Error 461 "Failed to acquire a
hWnd...". If I re-boot, everything is just fine again and I can run my program
again for another 5-6 times before the same things start again.

Observations: When this happens, other Windows & Euphoria programs work just
fine. Using other editors or running the .exw directly doesn't make any
difference. The same thing starts happening to my bound (.exe) program also,
though other bound and non-bound programs run just fine. This starts happening
even if I don't make a single change in my code. My anti-virus, anti-spyware,
security updates, etc. are all up-to-date (to the best of my knowledge &
ability).

Is my program too big for Euphoria/Win32lib, or is Windows holding on to some
variables from my previous runs which might clash with my new run, or is it some
other problem?

Thanks.
Anando

3. Re: win32lib: Weird problems out of the blue.

• Posted by Anando Banerjee <anandobanerjee at rediffmail.com> Jun 06, 2005
• 516 views

Derek Parnell wrote:
> 
> Anando Banerjee wrote:
>  
> > I am trying to develop an accounting package with Euphoria & Win32lib.
> 
> What versions of Euphoria, Win32lib and Windows are you using?
> 
> There was some problems with resource handling on win98 with older versions of
> the
> win32lib library.
> 
> -- 
> Derek Parnell
> Melbourne, Australia
> irc://irc.sorcery.net:9000/euphoria
> 

Hi Derek,

I am using Win98SE, Euphoria 2.5 Final (and the proper Binder), Win32lib
v0.60.6. I have also edited w32DLL.ew (as suggested in one of your earlier posts
on EUforum) to resolve the Error 461 problem with RichEdit. I have not had any
more problems with RichEdit Error 461 since. Now, the only problem is this weird
461 that appears after 5-6 runs, disappears on re-boot, only to re-appear again
after 5-6 runs even without any changes in anything.

Thanks.
Anando

5. Re: win32lib: Weird problems out of the blue.

• Posted by Anando Banerjee <anandobanerjee at rediffmail.com> Jun 07, 2005
• 490 views

Mario Steele wrote:
> 
> 
> This sounds like another Memory Leakage error, that is caused by using the
> RichEdit structures to change the Font, Escape, Color, and various other
> aspects of a RichEdit Control's Text.  I know I ran into this problem when
> working on my Simple RichEdit library.  Derek, you may want to double check
> your RichEdit functions, to make sure they are truely releasing the RichEdit
> structures, and they aren't just being nestled away, allowing memory to
> accumulate.
> 
> Mario Steele
> <a
> href="http://enchantedblade.trilake.net">http://enchantedblade.trilake.net</a>
> Attaining World Dominiation, one byte at a time...
> 

Thanks Mario,

While Derek ponders on this, let me just add to the knowledge base. My program
is currently spread out over 28 files (other than Win32lib, EUGrid, etc.) with
approx 19,600 lines of code so far. I am using RichEdit in about 17 places to
display on-screen reports (basically print previews). I have recently found a
better way to do this with Bitmap and bitBlt but would still like to see a better
RichEdit. As of now, when I try to output anything directly to RichEdit, the
display appears and disappears in a flash leaving a blank RichEdit box (no error
messages). So, I use a temporary variable to design the page with "\n" "\t" etc.
and then setText the variable to RichEdit to get a final display. Shoddy method,
I agree, but could not find a better way till I found Bitmap and bitBlt. (Any
suggestions from anybody for something even better?)

At present, I am converting all my RichEdit previews to Bitmap previews but,
like I said, why not an error-free RichEdit anyway?

Hope this helps.

Regards.
Anando

7. Re: win32lib: Weird problems out of the blue.

• Posted by Anando Banerjee <anandobanerjee at rediffmail.com> Jun 07, 2005
• 492 views

Mario Steele wrote:
> Which method are you using to store the text into the RichEdit?  Are you
> using setText(), or are you using appendText()?  appendText() will append
> the text to the RichEdit, and shouldn't make anything dis-appear.  setText()
> is basically clearing everything in the RichEdit, and storing the new text
> in it, as a clean sheet basically.
> 
> One thing I would suggest to you though, is to check and see which version
> of RichEdit Win32lib is linking to, and weither or not, you have 2 versions
> of RichEdit installed on your computer.  Cause some of these problems sound
> as though something I encountered with RichEdit 1.0, which wasn't as
> sophisticated as RichEdit 2.0 or 3.0 for that matter.  And some of the
> RichEdit structures have been known to not work properly with RichEdit 1.0.
> 
> Just some things for you to check.  I'd check myself, but Unfortunatly, I'm
> on Linux now, and don't deal much with Windows anymore.
> 
> Mario Steele
> <a
> href="http://enchantedblade.trilake.net">http://enchantedblade.trilake.net</a>
> Attaining World Dominiation, one byte at a time...
> 

Will check out your tips. 

One question though: How do I find out what version of RichEdit Win32lib is
linking to and, if it is not 2.0 or 3.0, how do I rectify that?

Thanks a million.
Anando

9. Re: win32lib: Weird problems out of the blue.

• Posted by Mario Steele <eumario at trilake.net> Jun 07, 2005
• 513 views
• Last edited Jun 08, 2005

Larry Miller wrote:
> 
> Determining which version of Richedit Win32Lib is using is quite simple.
> Check the value of the global constant WC_RICHEDIT.
> If the value is "RICHEDIT" then it is using Version 1.
> If the value is "RICHEDIT20A" then it is using Version 2 or 3.
> I don't know of any simple way to tell the difference between version 2 and 3.
> Any OS later than Win95 should have at least version 2.
> 
> Larry Miller

This is correct, checking the WC_RICHEDIT Constant will tell you what version is
loaded.  And actually Larry, RichEdit 2.0 didn't come out till Win98SE/SP2. 
Win98 shipped with RichEdit 1.0, and the Microsoft HTML Engine.  Which was later
replaced, to use the RichEdit 2.0 DLL that came out
with Win98SE, and Internet Explorer 5.0.


Mario Steele
http://enchantedblade.trilake.net
Attaining World Dominiation, one byte at a time...

11. Re: win32lib: Weird problems out of the blue.

• Posted by Mario Steele <eumario at trilake.net> Jun 08, 2005
• 506 views

Anando Banerjee wrote:
> How do I do that? And, if it is not 2.0 or 3.0, how do I upgrade?
> Thanks.
> Anando

include win32lib.ew
puts(1,WC_RICHEDIT)
machine_proc(26,0)

To upgrade, google RichEdit Upgrade.


Mario Steele
http://enchantedblade.trilake.net
Attaining World Dominiation, one byte at a time...

13. Re: win32lib: Weird problems out of the blue.

• Posted by Anando Banerjee <anandobanerjee at rediffmail.com> Jun 12, 2005
• 502 views

> 
> Showing 20A, though this is probably because I did google and download and run
> riched30.exe
> just before I got your answer.
> 
> Now, let me see whether this solves the problem or not. Will get back if it
> doesn't,
> otherwise it's working.
> 


Just to report that RichEdit 20A has not solved the problem. Maybe it's not a
RichEdit problem. Just have to keep on searching, I guess.

Anando