I agree one can have mupltiple type of algorithms based on suitability: 1. check for size if does not matches then those files are not same. 2. Compare 2% character from begining and then from end if those does not matches then files are not same. 3. Finally it can be once option to simply compare the remaining part of both files or use CRC, checksum, MD SHA. If MD and SHA or not already calculated and stored then those will be a bit costly.
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Thanks Jochen for your inputs. 1. I have used CriticalSection while accessing m_cstrLogLine but have omitted those additional lines to focus on actual business logic. 2. I agree that WideCharToMultiByte() could have been a better option to convert string but I have changed code to rule out any leak during conversion itself. 3. The CopyLogToFileByThread() is not modifying string and thats why its surprising to have memory leak from that function. 4. One more point i will like to mention here is thhat this application has been built for WinCE 6.0. I am trying to replicate the same issue with a test application and if possible for XP.
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I have found a very interesting incident of memory leak in my code. Although I have not been able to find the root cause of the leak still thought to share with you all. I will really appreciate any help on this. I am rather curious to know how come a memory leak can be seen in use of CString in such a simple way. Code: We have a thread function:
UINT __cdecl LogWriteThread(void *pParam)
{
CLog* pLog = (CLog*)pParam;
UNUSED_ALWAYS(pParam);
try
{
pLog->LogWriteFunc();
}
.................
.................
return 0;
}
UINT __cdecl CLog::LogWriteFunc(void *pParam)
{
..........
CString cstrLogDataBuffer = m_cstrLogLine;
m_cstrLogLine = _T("");
CopyLogToFileByThread(cstrLogDataBuffer);
}
void CMpmLog::CopyLogToFileByThread(const CString& cstrLogDataBuffer)
{
....................
const long iLength = cstrLogDataBuffer.GetLength();
char *pBuffer = new char[iLength + 1];
for (long iIndex = 0;iIndex < iLength; iIndex++)
{
pBuffer[iIndex] = (char)cstrLogDataBuffer.GetAt(iIndex);
}
pBuffer[iLength] = '\0';
const unsigned int uiWriteLen = fwrite((const void \*)pBuffer, sizeof(char),iLength, m\_pofLogStream);
delete\[\] pBuffer;
....................
}
======================== If I commment call for "CopyLogToFileByThread" in function LogWriteFunc then memory leak goes away. But thats not the solution.
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It depends on few things. Most importantly what bussiness logic is there in B. For example suppose B function is responsible to read data from a very large file and you want to return that from B. There are changes that file open error may occure then: int B(CString &out_string) will be best option because of two reasons. 1. The error code can be returned as return parameter 2. You dont need to accumulate the content of file in a local variable which gets added and deleted on stack while transferring that as return value.
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What do you actually want to do here?
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As you have said, the nokia modem is connected to USB port. Please make sure that you are using the same port in your application. A common mistake people do is to try to open a COM port #1 or #2 instead of USB one.
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Create one Singleton class. This should have a member of type "OdbcConnection" The connection to the database should be stablished in the constroctor of this class. This class should have a member function to return the object of type "OdbcConnection".
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Yes Yes, You are corrrect. I meant TextBox there.
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Web.config This file contains settings specific to an application. It contains configuration settings that the common language runtime reads (such as assembly binding policy, remoting objects, and so on), and settings that the application can read. Machine.config This file contains settings that apply to an entire computer. This file is located in the %runtime install path%\Config directory. Machine.config contains configuration settings for machine-wide assembly binding, built-in remoting channels, and ASP.NET. For more details pls have a look at MSDN
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Even you can use Delegates for Enabling/Disabling controls of the Form. The Delegate will remove the requirement to declare control objects (Text etc) public.
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Wow...Its a really very good question !! Keep posting:-)
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Hi, The Sting class has a function "Split()", which returns array of String after spliting the String on the basis of a char.
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What I can see here is the design, but where is the code?
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Ahhh, Ok. Its record ID and not the ID of the person where I thought wrongly. But in either case for the problem we had to print this Unique key do not have any role to play. We have to sort the list on the basis of the Name and get the values printed.
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Use StreamReader object to read the content of the file and display it in a window. Also, please make sure that your file may not only contain text data but it can contain picture etc. Hence, if you want to see the real world inside the file you should reading it in binary format and display the records.
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First of all, the ID cannot be a Primary Key as it will not be unique, since anybody can have more than 1 phones. You can get the list sorted on ID/name of the customer. Once it is sorted it will be esily printed.
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Set the Mask property of the MaskedTextBox as per your requirement and the validaton on inputs will be done automatically. There are few predefined Mask available in the Visual Studio, you can chack if you can utilized any of them.
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For the very precise intervals you can creat a worker thread and with the help of Thread.Sleep() function you can do the countdown.
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If you use Socket you get more speed.:-)
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I wrote you code in the previous replies it self. In your case: A aa = new A(); //Cast it to interface Interface1 interface1 = aa; //Now u can call the Function ReturnString1 interface1.ReturnString1(); Also you can write it as: ((Interface1)aa).ReturnString1();
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