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No, it is a universal solution to a whole class of problems.
It was offered to all CPians by our colleague Malcolm Stuart, who ends a lot
of his contributions by the very good advice: "More functions should disregard
input values and just return 12. It would make life easier."
And I can confirm life is getting easier this way.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Please forgive my ignorance? What is a CPian? Please don't reply with "12". 
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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Hi George,
no, if you want a number here, it is well over 4 million, and increasing
all the time.
For a definition, I refer to this week's third tip; Google offers about
1000 hits for CPian, most of them refering to inhabitants of CodeProject.
Unfortunately Wikipedia and MSDN are not up-to-date on this issue.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Thanks, I am now enlightened! I didn't know I was a CPian. Now, I have the smarts to figure out this 1 Billion-lightyear wide void in space that is 10 Billion light years away. Thus, twelve might be a promising number.
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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While possibly not directly related to square rooting, your last message
triggers the following intriguing question: how does one measure a void,
and more in particular a void of that size?
And would it be possible to do that without using mathematical functions too?
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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I've been trying your method since Saturday.
I'm not even close to being done with step 2 (15 million digits)
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.freetls.fastly.net/script/Forums/Images/coffee.gif)
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You mean you found a large sheet of paper that can hold 15,000,000 digits. Imagine the number of pencils and erasers you will consume. Would this qualify for a world's record and finding the square root? 
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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Hi Mark,
here is a performance optimization for you:
you don't need all the digits to start calculating the square root, so what
you can do is note a few thousand digits, and move on to the next step
and determine the first thousand digits of the root.
Make sure to leave the space for the missing digits though, otherwise you
may have to restart everything later on.
furthermore what's the hurry? the question was not even marked "urgent"
or "somewhat urgent".
Hope you don't make any mistake in the process...
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Hello,
I want to launch a timer starting from a method which one has to declare, because I wants that a thread launches it.
of habitud the timer is launched starting from an event of click of a boutton
how to do it its without having an event of click.
Thank you,
aef
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I am confused about what you want to do? 
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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I have a beginners question. What does the code look like to use DrawLine
in C++ CLI? -- thanks
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Here's one way:
<mshelp:link tabindex="0" keywords="T:System.Drawing.Graphics" xmlns:mshelp="http://msdn.microsoft.com/mshelp">Graphics^graphics = CreateGraphics();
Pen AzurePen(Color::Azure);
graphics->DrawLine(%AzurePen, 10, 10, 50, 50);
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Of course, this line will disappear as soon as the form is invalidated. All drawing should occur in the paint event
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Heh! I didn't say where to put the code, nor was I asked! LOL
Mark Salsbery
Microsoft MVP - Visual C++
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Actually, IMHO, you shouldn't give too much more information than they ask for. You learn more from trying and failing (a.k.a. experience) than someone telling you as a by-the-way comment.
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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Also, I find the distance I drift away from what the OP really wanted is often directly proportional
to the amount of example code I type and/or copy
Cheers,
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Word!
"We make a living by what we get, we make a life by what we give." --Winston Churchill
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George L. Jackson wrote: You learn more from trying and failing
Yes but this is 2007 and you will get paid more by making your deadlines using copy/paste ! We don't don't need no stinkin learnin! :->
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Hi Mark,
your code was not targetting the paint handler, it includes a CreateGraphics(),
whereas A paint handler would hand you the Graphics to use !
Greetings
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Indeed! Thanks Luc 
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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Yesterday I tried an experiment.... I took a C++/CLI application of mine and disabled my menu-disabling code so that my full menu system (with fly-outs) would work even when no application data was open. Using Task Manager to monitor my memory use, I noticed that every time I expanded a top-level menu or moused over a sub-menu that triggered a fly-out, more memory was used. No shock there. BUT, when I click back in the main window area to make all the fly-outs disappear, the memory use does NOT decrease! In fact, I sat there for 10 minutes waiting for Task Manager to show some drop in memory use, but it never did. Meanwhile, when I triggered the same fly-out again, even MORE memory was used.
I noticed the same behavior when I triggered the Open File Dialog (.NET out of the box -- no overrides or anthing weird).
The application I am writing is very dialog-intensive. The base application uses about 64MB. But at the consumption rates I'm seeing, I could very well imagine that after an hour or so I'd be up to 512MB from invoking dialogs and the GC failing to reclaim memory.
What the heck is going on? Is my Garbage Collector broken? Should I somehow manually invoke garbage collection to clear some memory? Does anyone know if the GC works on a time interval or a certain percentage of consumed memory, or what?
Thanks for your help.
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Xpnctoc wrote: The application I am writing is very dialog-intensive.
I'm confused, is that a recommended User Interface Design?
Xpnctoc wrote: Does anyone know if the GC works on a time interval or a certain percentage of consumed memory, or what?
No. Nobody knows. Not even the guys at Microsoft that developed it, documented it and then published MSDN whitepapers, articles and blogs about how it works.
Xpnctoc wrote: Thanks for your help.
No problem
[modification] Sorry forgot to mention, don't try to use google to find any information on the subject, I am pretty sure that won't work. For example none of this would help[^]
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If you don't trust the GC, then get out of .NET coding IMMEDIATELY! You'll
never sleep!
In addition to led mike's reply...
I didn't trust the GC when I started with C++/CLI. After 15+ years of C/C++, i am
VERY used to handling allocation/deallocation myself. I had to write a bunch of test code
to convince myself it worked. Maybe that will help you?
Managed objects WILL be freed eventually once no references are left on them. If you
mix unmanaged objects in managed classes you need to make absolutely sure you're using
destructors and finalizers properly and freeing any unmanaged resources. You are still
responsible for the scope of your managed objects. If they never go out of scope, they
will NOT be cleaned up by the GC.
The task manager is NOT a debugging/development tool.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Try this with a few WinForms apps(release builds of a C# apps). Start it up and watch the memory usage in task manager. Make sure you are not running the Visual Studio host process (appname.vshost.exe). Move it around and use the menu etc. and watch the memory usage climb until you have had enough fun with that. Now minimize it. After your initial "hmmm interesting" reaction, continue watch memory usage while you restore it and manipulate it some more.
Be sure to let me know what happens!
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