Hi Neil,
> I can't reproduce this on Windows XP SP2. I set up SciTE to open
> full screen 1020x1680 windows with output.horizontal.size=200 so the
> output pane would also be active and with three files loaded. After
> 69
> instances, Windows refuses to open any more applications but all of
> the instances (well, the 20 or so I randomly tried) remained
> responsive. Windows refusing to open more copies happens with most
> applications: I could open 50 copies of WinMerge or 40 or so
> Internet
> Explorer's before it stopped. I gave up on Notepad after 102
> instances. Something is being exhausted here but I don't know what.
> Its not memory as less than half of installed RAM is used.
Thank you very much for testing this (thanks also to Iago). It's much
appreciated. I have tried repeating the test in Win 2k, running under
VMWare, and am glad to say that it worked fine, however on all my Win
XP (SP 2) machines the problem persists. I have tested Scite,
Programmers Notepad 2, AnyEdit, the PureBasic editor and my own app
and they all have the problem. Notepad, my app with a richedit control
and PSPad (uses SynEdit) don't so i hope you don't mind me assuming it
is still a Scintilla problem (but perhaps specific to something i have
installed on my XP machines if no-one else can reproduce it!). In
testing, it doesn't have to be X different instances of whatever
program is being tested, just X different (and physically large on
screen) Scintilla controls where X is some large number that causes
the problem.
> The right thing to do is to run your application under a debugger
> and break when you see a hang so that you can find out where the
> hang
> occurs. Another approach would be to use BoundsChecker which will
> tell
> you when an allocation call fails.
Unfortunately i am not a C/C++ programmer and my debugger skills leave
something to be desired so as yet i haven't found anything specific.
In my app i can see that Sci_SetText and Sci_GetText are still working
correctly (i can set and retrieve the text but the controls do not
update on-screen nor do they accept any keyboard input when this
problem arises) so describing it as a hang before was probably
incorrect and it seems that Scintilla just stops updating the screen
contents. Probably the biggest clue so far that it is related to
resources is that if i have PocoMail open and then open many Scintilla
windows then PocoMail goes berserk with "Out of resource" errors.
I'll continue to look into it and if anyone has any further ideas or
can reproduce this problem then please shout out!
Thanks again,
Mat
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