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If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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So.....How can I solve this problem?
As have this error I can't generate a Cpp file by matlab
I tried many method...like adding the path of 'stdio.h'...but it doesn't work anyawy...
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I have client/Server Application . It is perfectly working. no issues. memory leaks also very less. because it checked with memory checking tool like boundschecker etc.
But In task manager my application is eating too much of memory usage. What is the reason ? Is still memory leak in my applicaitonor any issue with my applicaiton? Please give the solution for this.
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ERLN wrote: Is still memory leak in my applicaitonor
A memory leak is not the only explanation for increasing memory usage.
ERLN wrote: What is the reason ?
There are a large number of ways one might develop code that would result in constant memory usage increase. There is no way for us to tell what you have done.
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ERLN wrote: But In task manager my application is eating too much of memory usage. What is the reason ?
By not reading here first.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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Dude, there's not near enough pictures on that page.
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Well, if we assume that "a picture is worth 1000 words," there's more than enough.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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i want ro make a program to get input from parallel port and identify the input to perform function of key on keyboard.
i know how to get the input from the parallel port... now if i want that windows must act as if "windows key" of "capslock" key is presssed for particular input value how should i do that... how to instruct the os to perform function of a particular key or keys???
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I have application that uses a serial port and I/O card. The application starts up add attempts to initializes the serial card and I/O card. If either of them fail and would like to throw an exception telling the user that corresponding object failed and terminate the applications. How do i accomplish this?
I have tried to use throw (" Unable to initialize Serial Port" ); However, it does not display my string. It does terminate the application but, the user is left clue unless..
Scott Dolan
Jernie Corporation
Engineering & Manufacturing
Software, Hardware, & Enclosures
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If you want to implement something quick & throw just strings you can use std::exception
void main()
{
try
{
std::exception ex("My error");
throw ex;
}
catch(std::exception& ex)
{
cout<< ex.what();
}
}
The best way is to design your own exception class to deal with different cases -or even a struct, As C++ is quite flexible when it comes to throwing something
He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus
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Oops sorry. I was too quick to respond. If you want to catch any exception and then throw a meaningful one , you should do like
void IOReadFuntion()
{
try
{
}
catch(...)
{
std::exception ex("Error while reading port");
throw ex;
}
}
void main()
{
try
{
IOReadFuntion();
IOWriteFunction();
}
catch(std::exception& ex)
{
cout<<ex.what()
}
}
Signing off. good night!
He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus
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Vunic,
I am not using a console application. I have MFC application and when i throw and exception it creates window that say Microsft Visual C++ Runtime Error. It has big red x and Has the path of the exe that failed, along with a string telling the failure. I wanna use my string instead of the generic string provided.
Scott Dolan
Jernie Corporation
Engineering & Manufacturing
Software, Hardware, & Enclosures
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ScotDolan wrote: when i throw and exception it creates window that say Microsft Visual C++ Runtime Error.
No way, when you throw your own exception. And if you are handling it, it should work. Try this one. No matter it is console or dialog.
try
{
std::exception ex("MyExeception");
throw ex;
}
catch(std::exception& ex)
{
AfxMessageBox(ex.what());
}
btw, if you want to catch any unhandled exception, you could try SetUnhandledExceptionFilter()
He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus
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Why use an exception? Why not just attempt to initialize the serial card and return an error code on failure? I actually have code that does exactly that (our system uses a lot of serial ports.) Most our code doesn't use MFC, but the few programs that do, I do this check in the InitInstance() function. On failure, it pops up a message box explaining the failure.
(For some applications, I return a resource ID of the error string; in others just a bool indicating success or failure--it all depends on the requirements.)
Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke
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I'd second Joe's reply - why on earth are you using exceptions for this.
A serial port being unavailable is by its nature a normal thing. Not exceptional at all!
Why not:
BOOL CMyDialog::InitialisePort (UINT nComPort, CString &Error)
{
...
if (!...)
{
Error = _T(" Unable to initialize Serial Port" );
return FALSE;
}
...
return TRUE;
}
?
I can't think of a single place I've written a throw command. I've written a few catchers for other people's libraries, so I'm not a exception virgin - just not a fan.
Good luck with your application,
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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Hello all,
Is creating a DLL with Visual Studio the same as creating a Module Definiton File?
I don't see the option to create this file after right-clicking the source file folder, and hitting 'Add New Item' in the Solution Explorer.
Thanks
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Found it!!!
http://www.functionx.com/visualc/libraries/moduledef.htm
I'll add add the ".def" extension
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su_penguin wrote: I'll add add the ".def" extension
That's outdated.
He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus
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su_penguin wrote: Is creating a DLL with Visual Studio the same as creating a Module Definiton File?
No.
I'm no expert in the interfaces of visual studio later than 6 (I'm a dinosaur, I know...), but you'll have to add a new project to your workspace. When you do, you will be walked through a wizard, and some of those options will be DLLs.
If you're using VC express, it may be harder. Look over todays Q&As for a dicussion from this morning about that.
Good luck,
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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in general that's a real old style way of doing it. A simpler way is to use the __declspec(dllexport) and __declspec(dllimport) in front of your function(s)/class(es). You can write a macro that switches between these - this is what the DLL wizard will do for you as well. Check those out on google, should answer the rest of the question.
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For the most part what everyone has stated is accurate.
If you want more specific information click here[^]
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Excuse my english
I have a library with many classes, but only one will be used by the final user of the library.
The problem is: the .h of the main class have private references to other classes, then the final user needs to include all of .h files.
I want a simple .h file for the final user with a declaration of the main class, is this posible?.
I think add a interface class to solve this.
tks in advance
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This won;t be easy. But you may be able to use forward declaration. (Use that as a search term)
ie:
class CSomePrivateClass;
struct CSomePrivateStruct;
class CMyPublicClass
{
...
protected:
CSomePrivateClass *m_pClass;
CSomePrivateStruct *m_pStruct;
};
That's not great code, but I hope it gives you the idea.
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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Create a header file called simple.h
Inside that put the following
#include "firstclass.h"
#include "secondclass.h"
#include "thirdclass.h"
#include "fourthclass.h"
#include "fifthclass.h"
Now the final user only need to include simple.h.
«_Superman_»
I love work. It gives me something to do between weekends.
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