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looser, Codeproject is the best programming forum ever 
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And the crowd applauded maddly
"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook
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Kedia wrote: "how to start?"
Go to the Site www.FunctionX.com
It has a very good VC++ Tutorials for the Beginers.. [ You have to click the VC++ Link inside it]
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ask specific question and you'll find all the help you want about Visual Studio environment here...
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Hi Kedia,
As of me, I do suggest CoderSource.net, to the beginners.
http://www.codersource.net/codersource_mfc_prog.html[^]
You can get most of the concepts for "Windows Programming in VC++ - MFC".
I've enjoyed Functionx.com too.
Come here to CodeProject.com, only for specific problems.
Enjoy programming in VC++,
Sarvan AL
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1) i'm not Kedia
2) you're wrong : Codeproject has plenty of beginners tutorials/articles, and the forums are full of very professional developpers.
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Hello
MSDN help is useful for u.
CDC is main class in GUI
Regards
KK
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Krishna Kumar N wrote: CDC is main class in GUI
I am afraid you are wrong... CDC is main class of graphics, right? 
- NS -
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#include "AddSectordlg.h"
#include ".\addsectordlg.h"
why does VS2003 adds these two lines in an mfc application, all i can see is that the two paths are same so why two seperate entries.
*radio crackle*
The cucumber has left the salad
- I say again -
The cucumber has left the salad
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when you use the wizard to generate some code (add of a new event handler for example), it includes in the cpp file modified the related header.
the .\ means that the header - by its relative path that it - is located in the same directory as the cpp.
but this is a bug of the environment. it is useless...
you can without problem delete this #include ".\addsectordlg.h" because the file is already included the line before...
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 i hv created a thread. the cpu percentage during this time is 100%.
Any alternate soln for these.
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What are u doing inside that thread....?
Put some sleep...
nave
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Naveen R wrote: What are u doing inside that thread....?
Put some sleep...
Very bad advice for "solving" CPU usage problems in threads. It never resolves the underlying cause of high CPU usage. And how long should the thread sleep? 10 ms is probably the smallest quantum that can be gotten, and that might be too long to be responsive in some cases. And in other cases 10 ms isn't nearly long enough. So any choice is completely ad hoc, made as a result of some testing on the developer's machine for conditions that might not be valid on the user's machine.
In my experience, the presence of Sleep() in a thread, with the possible exception of Sleep(0), is generally a bad design choice.
Best regards,
Mike
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Threads, like any other process, will take up as much CPU as there is available. If you're doing pure processing in a separate thread, there's not a lot you can do - you can reduce the priority of the thread but this will only reduce the CPU time if other processes are running too.
I suspect more likely you're writing code like:
void MyThread()
{
extern volatile bool isThereAMessage;
while (!isThereAMesage) { }
...process message...
}
This type of behaviour, spinning in a loop waiting for something to happen, is a frequent cause of threads taking up all available CPU time. If you are in this kind of situation, then I suggest you look at your OS's thread synchronisation and wait functions. If you're on windows, WaitForMultipleObjects, WaitEvent and similar. These put your thread to sleep until a message (or timeout) occurs, releasing the CPU for other processes to use it.
[NB the code example I have above is it itself not strictly thread safe; instead of using pure volatile bools, one should use thread safe calls, for example the Win32 InterlockedIncrement() and InterlockedAdd() etc]
Matt Godbolt
Engineer, ProFactor Software
StyleManager project
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[quote]
Threads, like any other process, will take up as much CPU as there is available
[/quote]
it is definitely incorrect.
at least, when process which creates the thread is active, the thread is sleeped, I think other processes can sleep any thread.
Priority.
A special image tool for C++ programmers, don't miss it!
The world unique Software Label Maker is here for you and me ...
A nice hyper tool for optimizing your MS html-help contents.
-- modified at 3:17 Friday 7th April, 2006
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I said as much CPU as there is available to that thread - which is correct as far as I understand. The operating system will split up the CPU time amongst all threads, taking into account thread priority, temporary active window priority boosts and other factors. When you create a thread, unless you specify CREATE_SUSPENDED as a parameter, the other thread will start running immediately. On a multi-processor system that can mean both the parent thread and its child are running concurrently - something to watch out for.
Threads are only slept when they're waiting on an object or they've called 'Sleep()' themselves. In all other cases, even when they're not actually running, the thread is in the 'Ready' state, so the OS will schedule them for running as soon as it can. Thus, a thread will take up as much CPU as there is available.
Matt Godbolt
Engineer, ProFactor Software
StyleManager project
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The while loop is doing a busy wait - A big no no on multitasking operating systems. Use something like this:
HANDLE g_ThereIsAMessage = CreateEvent(NULL, FALSE, FALSE, NULL);
SetEvent(g_ThereIsAMessage);
void MyThread()
{
for( ; ; )
{
WaitForSingleObject(g_ThereIsAMessage, INFINITE);
}
}
Steve
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To me, any code EVER waiting INFINITE is a big no-no 
People that start writing code immediately are programmers (or hackers), people that ask questions first are Software Engineers - Graham Shanks
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The code was only meant as an illustration of how to do a wait that isn't busy - Obviously in a real application you would use a call to WaitForMultipleObjects and have multiple events one of which would be an exit event.
Steve
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That was my exact point; hence my message explaining how to do exactly as you describe!
Matt Godbolt
Engineer, ProFactor Software
StyleManager project
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Syncronize your thread.
We Believe in Excellence
www.aqueelmirza.cjb.net
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Hi,
I have created IDC_LIST (list box) of type ClistBox and Member m_list.
For Add items I am using m_list.AddString(szDir); & for reset the list I am using m_list.ResetContent(); both this are working fine.
Can anyone tell me how to delete a item from list ? if I have 5 items in my list box if I have selected 4th item in the list box after pressing delete button I want that 4 item to be removed from list how to do that ??
And also I want to access all items of the list box in other functions.
Regards,
Parichay B.P
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Hi parichaybp ,
for delete from ListBox use DeleteString
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