Memory Leak - C / C++ / MFC Discussion Boards

prathuraj12-Apr-07 0:16

12-Apr-07 0:16

i have to find the mozila installed or not in a system.How i find that in registry editor.Which mfc class help for this. plz help me.

Re: Registry editor

Rajesh R Subramanian12-Apr-07 1:53

Rajesh R Subramanian

12-Apr-07 1:53

Try CRegKey

Nobody can give you wiser advice than yourself. - Cicero

Re: Registry editor

Roger Stoltz12-Apr-07 2:29

Roger Stoltz

12-Apr-07 2:29

prathuraj wrote:
i have to find the mozila installed or not in a system.How i find that

I assume you want to know whether Firefox is installed or not and I suggest the following if this is the case:
1. open the "HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox" key in the registry.
2. Read the contents of the "CurrentVersion" value, they wil be used in the next step.
3. Open the key "HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox <CurrentVersion contents from #2>\Main" and read the contents of the "PathToExe" value.
4. Verify that the exe-file exists where it's supposed to.

If everything worked and you could find the exe-file, you have verified that Firefox is properly installed.
If any key is missing, or could not be opened, then you can assume that Firefox is not properly installed.
At first, have a look with the registry editor to see how the keys and values are organized.

As for how to do deal with the registry from your code, I suggest you have a look in the "Registry" section among the articles here[^].

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

Re: Registry editor

Hamid_RT19-Apr-07 21:56

Hamid_RT

19-Apr-07 21:56

And see A Registry Class [^]

WhiteSky

Problem with Mnemonics of a Group box

sw@thi12-Apr-07 0:14

sw@thi

12-Apr-07 0:14

We have a bug in our project, the problem is:

There is a group box and inside the group box there are 2 radio buttons, all the three controls have mnemonics. When I give the shortcut for group box the focus shifts to the first radio button (because that’s the first control with tab stop) but when I give the short cuts for the 2 radio buttons, the focus shifts from one button to the other but the radio buttons remain unchecked. That is, which ever button is checked by default remains checked even when I give the shortcut for the other radio button but the focus is shifted.

I proposed a solution to this by overriding the PreTranslateMessage() function and capturing the 2 shortcuts for the radio buttons and checking the appropriate radio buttons programmatically and un-checking the other radio button using CWnd::CheckDialogButton() function.

However I couldn’t find the cause for this bug, I checked the Group and Tab Stop properties of the controls and tried changing these properties but still the mnemonics don’t work.

I was wondering if anyone faced this problem before?!! Or if there’s a better way to fix this bug?!!

Thanks,

swathi

Problem in running Window service

ArunkumarSundaravelu11-Apr-07 23:43

ArunkumarSundaravelu

11-Apr-07 23:43

Hi I’m creating one windows service in my own purpose
Using msxml4.dll.
The process of service is to fetch the data from exchange server through webdav SEARCH METHOD

When i use this coding in windows form normal button click event , it works fine,
When I convert into windows service, it throws the error

The coding is below

MSXML2.XMLHTTP objXMLHTTP = new MSXML2.XMLHTTP();

writemethod("After Initialize");

System.Xml.XmlDataDocument xmlDOMParams = new System.Xml.XmlDataDocument();

objXMLHTTP.open("SEARCH", strInboxURL,false,strAliasName, strPassword);
objXMLHTTP.setRequestHeader("Content-type", "text/xml");
objXMLHTTP.setRequestHeader("Depth", "1");

string strXML;
strXML = "" +
"<d:searchrequest xmlns Big Grin | :-D

="\'DAV:\'">" +
"<d:sql>" +
"SELECT \"urn:schemas:httpmail:fromemail\"," +
------------------
---------etc…

objXMLHTTP.send(strXML); // Error Raised

The Error Raised in when i send the xml query

Any suggestion,please reply

We are using c#

Regards,
Arunkumar S

Re: Problem in running Window service

bob1697212-Apr-07 5:40

bob16972

12-Apr-07 5:40

ArunkumarSundaravelu wrote:
We are using c#

No habla C#

Translation: Wrong forum

Memory Leak

Rassul Yunussov11-Apr-07 23:30

Rassul Yunussov

11-Apr-07 23:30

I use CImage class for working with bitmaps and noticed memory leak and can't understand the problem.
When i'm trying to change the content of bitmap by accessing the bytes - in different cases i see or not see memory leaks, however the code is same!

Here is the code:

<br />
UINT __cdecl CGNTGDALDlg::GNTClassificationFunction( LPVOID pParam )<br />
{<br />
	ThreadStruct* pStruct = (ThreadStruct*)pParam;<br />
	int n = pStruct->pDlg->m_Image.GetHeight();<br />
	int m = pStruct->pDlg->m_Image.GetWidth();<br />
	int LineLength = pStruct->pDlg->m_Image.GetPitch();<br />
	unsigned char* Bitmap = (unsigned char*)pStruct->pDlg->m_Image.GetBits();<br />
	Bitmap+=LineLength*pStruct->Offset;<br />
	if(pStruct->pDlg->m_floatingWindowSize==0)<br />
	{<br />
		__declspec(align(16)) float* pInputs =(float*) _aligned_malloc(pStruct->pDlg->m_poDataset->GetRasterCount()*sizeof(float),16);<br />
		for(int i =pStruct->Offset;i<pStruct->End;i++)<br />
			{<br />
				for(int j = abs(LineLength%m),l=0;j<m*3,l<m;j+=3,l++)<br />
				{<br />
						double distance;<br />
						CGNTNeuron* pNeuron;<br />
						double Norm = 0;<br />
						for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)<br />
						{<br />
							pInputs[k] = pStruct->pDlg->m_pImageMatrix[k][i][m-l-1];<br />
							Norm+=pInputs[k];<br />
						}<br />
						Norm = sqrt(Norm);<br />
						for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)<br />
							pInputs[k]/=Norm;<br />
						EnterCriticalSection(&pStruct->pDlg->m_CriticalSection);<br />
						unsigned int value = pStruct->pDlg->m_pGNTNet->Propagate(pInputs,distance,&pNeuron);		<br />
						LeaveCriticalSection(&pStruct->pDlg->m_CriticalSection);<br />
						<br />
						*(Bitmap-LineLength-j-1) = GetRValue(value);//eto krasnii<br />
						*(Bitmap-LineLength-j-2) = GetGValue(value);//eto zelenii<br />
						*(Bitmap-LineLength-j-3) = GetBValue(value);//eto sinii<br />
				}<br />
				Bitmap+=LineLength;<br />
			}<br />
		_aligned_free(pInputs);<br />
	}<br />
	else<br />
	{<br />
		__declspec(align(16)) float* pInputs =(float*) _aligned_malloc(pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_poDataset->GetRasterCount()*sizeof(float),16);<br />
		for(int i =pStruct->Offset;i<pStruct->End;i++)<br />
			{<br />
				if(i<pStruct->pDlg->m_poDataset->GetRasterYSize()-pStruct->pDlg->m_floatingWindowSize)<br />
				for(int j = abs(LineLength%m),l=0;j<m*3,l<m;j+=3,l++)<br />
				{<br />
					if(l<pStruct->pDlg->m_poDataset->GetRasterXSize()-pStruct->pDlg->m_floatingWindowSize)<br />
					{<br />
							double distance;<br />
							CGNTNeuron* pNeuron;<br />
							int ll = 0;<br />
							double Norm = 0;<br />
							for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)<br />
								for(int ii = i;ii<i+pStruct->pDlg->m_floatingWindowSize;ii++)<br />
									for(int jj = l;jj<l+pStruct->pDlg->m_floatingWindowSize;jj++)<br />
									{<br />
										pInputs[ll++] = pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1];<br />
										Norm+=pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1]*pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1];<br />
									}<br />
							Norm = sqrt(Norm);<br />
							for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount()*pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_floatingWindowSize;k++)<br />
								pInputs[k]/=Norm;<br />
							EnterCriticalSection(&pStruct->pDlg->m_CriticalSection);<br />
							unsigned int Value  = pStruct->pDlg->m_pGNTNet->Propagate(pInputs,distance,&pNeuron);		<br />
							LeaveCriticalSection(&pStruct->pDlg->m_CriticalSection);<br />
							*(Bitmap-LineLength-j-1) = GetRValue(Value);//eto krasnii<br />
							*(Bitmap-LineLength-j-2) = GetGValue(Value);//eto zelenii<br />
							*(Bitmap-LineLength-j-3) = GetBValue(Value);//eto sinii<br />
<br />
					}<br />
				}<br />
				Bitmap+=LineLength;<br />
			}<br />
		_aligned_free(pInputs);<br />
	}<br />
	return 0;<br />
}<br />
<br />

Re: Memory Leak

Mark Salsbery12-Apr-07 7:50

Mark Salsbery

12-Apr-07 7:50

I'll try to help but I can't read your posted code.
Can you wrap it in "pre" tags instead of "code" tags?

How do you know there's a leak? How are you checking?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: Memory Leak

Rassul Yunussov12-Apr-07 22:43

Rassul Yunussov

12-Apr-07 22:43

Well, i looked in the task manager - when this process is running the momory grows up.
Here is code in pre tags

UINT __cdecl CGNTGDALDlg::GNTClassificationFunction( LPVOID pParam )
{
	ThreadStruct* pStruct = (ThreadStruct*)pParam;
	int n = pStruct->pDlg->m_Image.GetHeight();
	int m = pStruct->pDlg->m_Image.GetWidth();
	int LineLength = pStruct->pDlg->m_Image.GetPitch();
	unsigned char* Bitmap = (unsigned char*)pStruct->pDlg->m_Image.GetBits();
	Bitmap+=LineLength*pStruct->Offset;
	if(pStruct->pDlg->m_floatingWindowSize==0)
	{
		__declspec(align(16)) float* pInputs =(float*) _aligned_malloc(pStruct->pDlg->m_poDataset->GetRasterCount()*sizeof(float),16);
		for(int i =pStruct->Offset;i<pStruct->End;i++)
			{
				for(int j = abs(LineLength%m),l=0;j<m*3,l<m;j+=3,l++)
				{
						double distance;
						CGNTNeuron* pNeuron;
						double Norm = 0;
						for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)
						{
							pInputs[k] = pStruct->pDlg->m_pImageMatrix[k][i][m-l-1];
							Norm+=pInputs[k];
						}
						Norm = sqrt(Norm);
						for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)
							pInputs[k]/=Norm;
						EnterCriticalSection(&pStruct->pDlg->m_CriticalSection);
						unsigned int value = pStruct->pDlg->m_pGNTNet->Propagate(pInputs,distance,&pNeuron);		
						LeaveCriticalSection(&pStruct->pDlg->m_CriticalSection);
						
						*(Bitmap-LineLength-j-1) = GetRValue(value);//eto krasnii
						*(Bitmap-LineLength-j-2) = GetGValue(value);//eto zelenii
						*(Bitmap-LineLength-j-3) = GetBValue(value);//eto sinii
				}
				Bitmap+=LineLength;
			}
		_aligned_free(pInputs);
	}
	else
	{
		__declspec(align(16)) float* pInputs =(float*) _aligned_malloc(pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_poDataset->GetRasterCount()*sizeof(float),16);
		for(int i =pStruct->Offset;i<pStruct->End;i++)
			{
				if(i<pStruct->pDlg->m_poDataset->GetRasterYSize()-pStruct->pDlg->m_floatingWindowSize)
				for(int j = abs(LineLength%m),l=0;j<m*3,l<m;j+=3,l++)
				{
					if(l<pStruct->pDlg->m_poDataset->GetRasterXSize()-pStruct->pDlg->m_floatingWindowSize)
					{
							double distance;
							CGNTNeuron* pNeuron;
							int ll = 0;
							double Norm = 0;
							for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount();k++)
								for(int ii = i;ii<i+pStruct->pDlg->m_floatingWindowSize;ii++)
									for(int jj = l;jj<l+pStruct->pDlg->m_floatingWindowSize;jj++)
									{
										pInputs[ll++] = pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1];
										Norm+=pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1]*pStruct->pDlg->m_pImageMatrix[k][ii][m-jj-1];
									}
							Norm = sqrt(Norm);
							for(int k = 0;k<pStruct->pDlg->m_poDataset->GetRasterCount()*pStruct->pDlg->m_floatingWindowSize*pStruct->pDlg->m_floatingWindowSize;k++)
								pInputs[k]/=Norm;
							EnterCriticalSection(&pStruct->pDlg->m_CriticalSection);
							unsigned int Value  = pStruct->pDlg->m_pGNTNet->Propagate(pInputs,distance,&pNeuron);		
							LeaveCriticalSection(&pStruct->pDlg->m_CriticalSection);
							*(Bitmap-LineLength-j-1) = GetRValue(Value);//eto krasnii
							*(Bitmap-LineLength-j-2) = GetGValue(Value);//eto zelenii
							*(Bitmap-LineLength-j-3) = GetBValue(Value);//eto sinii

					}
				}
				Bitmap+=LineLength;
		}
		_aligned_free(pInputs);
	}
	return 0;
}

Re: Memory Leak

Mark Salsbery13-Apr-07 7:23

Mark Salsbery

13-Apr-07 7:23

As long as you are freeing memory you allocate you should be fine.

The task manager isn't always a great leak detector. Memory allocated for your process may
be marked as available to the application but not freed until it's necessary - for performance.
Trust your code Smile | :)

The debug C runtime (CRT) will show leaks at runtime for malloc, _aligned_malloc, new, etc.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: Memory Leak

Rassul Yunussov15-Apr-07 18:33

Rassul Yunussov

15-Apr-07 18:33

Ok! Thank You very much for participating.

KEYEVENTF_UNICODE macro

Syamlal S Nair11-Apr-07 23:20

Syamlal S Nair

11-Apr-07 23:20

hi,

I am using the following code to send a string to the notepad, without direct keyboard input(using SendInput function):

//start of code
CString str(_T("D:\\sample.gho"));

INPUT key[2];
int nLeng = str.GetLength();

for(int index=0;index < nLeng;index++ )
{
::ZeroMemory(key, sizeof(key));
key[0].type = key[1].type = INPUT_KEYBOARD;
SHORT nKeyCode = VkKeyScan(str[index]);

if (VK_SHIFT & nKeyCode)
{
key[0].ki.wVk = VK_SHIFT;
key[0].ki.dwFlags = KEYEVENTF_KEYUP;
//shift key plus char
key[1].ki.wScan = str[index];
key[1].ki.dwFlags = KEYEVENTF_UNICODE ;

}
else if (VK_CAPITAL & nKeyCode)
{
key[0].ki.wVk = VK_CAPITAL;
key[0].ki.dwFlags = KEYEVENTF_KEYUP;
//capital key plus char
key[1].ki.wScan = str[index];
key[1].ki.dwFlags = KEYEVENTF_UNICODE ;

}
else
{
key[1].ki.wVk = nKeyCode;
key[1].ki.dwFlags = KEYEVENTF_UNICODE ;

}

key[0].ki.time = key[1].ki.time = 0;
key[0].ki.dwExtraInfo = key[1].ki.dwExtraInfo=0;
SendInput(2,key,sizeof(INPUT));
}
//end of code

But, unfortunately, I gets an error:

'KEYEVENTF_UNICODE' : undeclared identifier

Please help me.

Thanks in advance.

SYAMLAL

Re: KEYEVENTF_UNICODE macro

Gospodin Baron12-Apr-07 3:19

Gospodin Baron

12-Apr-07 3:19

MSDN say, that KEYEVENTF_UNICODE used for Windows 2000/XP only.

In winuser.h you can see
#if(_WIN32_WINNT >= 0x0500)
#define KEYEVENTF_UNICODE 0x0004
#define KEYEVENTF_SCANCODE 0x0008
#endif /* _WIN32_WINNT >= 0x0500 */

So, if you are realy in Win2000 or XP...
Look in file stdafx.h.
I work in XP, and I have next line in stdafx.h :

#ifndef _WIN32_WINNT

#define _WIN32_WINNT 0x0400
See? Change this on
#define _WIN32_WINNT 0x0500

#endif

May be it'll help for you

Best regards,
Baron

Re: KEYEVENTF_UNICODE macro

Syamlal S Nair16-Apr-07 22:47

Syamlal S Nair

16-Apr-07 22:47

Thanks a lot.

Actually

#define KEYEVENTF_UNICODE 0x0004
#define KEYEVENTF_SCANCODE 0x0008

these lines were not present in my winuser.h file.
So I added these in that file, and the application is now working fine.

Once again,,thanx

SYAMLAL

programing with port USB

maheno11-Apr-07 23:12

maheno

11-Apr-07 23:12

hi my project is obut proming with port usb .plz explain obut it.tanks

Re: programing with port USB

Rajesh R Subramanian12-Apr-07 1:51

Rajesh R Subramanian

12-Apr-07 1:51

Click here[^]

Nobody can give you wiser advice than yourself. - Cicero

loading the whole text file into an array

cyn811-Apr-07 22:44

cyn8

11-Apr-07 22:44

Hi,
I have a text file which its contents in has to be loaded into an array. The content in the.txt file has some spaces between them and it is also a few lines long(separated by '\n'). May i know how to copy the whole file into an array?
Thank you for any help.

Re: loading the whole text file into an array

toxcct11-Apr-07 23:04

toxcct

11-Apr-07 23:04

i'd suggest you to turn to C++ solutions instead of sticking to C.

by the way :

char pszBuffer[NUMBER_LONG_ENOUGH];
 
::fscanf(myOpenedFile, "%s", pszBuffer);

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: loading the whole text file into an array

cyn811-Apr-07 23:15

cyn8

11-Apr-07 23:15

I can't use this method, somehow the character save in the file turns out to be in funny shapes and not the ones i input. Below is the code i used.

FILE *stream;
stream = fopen( "Result File.txt", "w+" );
char pszBuffer[500]; ::fscanf(stream, "%s", pszBuffer);

Re: loading the whole text file into an array

toxcct11-Apr-07 23:19

toxcct

11-Apr-07 23:19

hey, you open the file writable, not readable... D'Oh! | :doh:

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: loading the whole text file into an array

cyn811-Apr-07 23:35

cyn8

11-Apr-07 23:35

sorry mistakes, just a beginner...
but if i change w to r,it still does not help. btw, i need to put it in array of characters for it to work.

Re: loading the whole text file into an array

Cedric Moonen11-Apr-07 23:10

Cedric Moonen

11-Apr-07 23:10

You can use ifstream for that purpose. You can extract formatted data from the stream by using the extraction operator ( >> ).

ifstream myFile("MyFile.txt);
int iValue;
myFile >> iValue;

See here[^] for more info.

EDIT: when looking at toxcct answer, I'm wondering: your file contains only pure text that you want to load into a string or does it contain numeric values that you want to load into an array (like an integer array) ?

Cédric Moonen
Software developer

Charting control [v1.1]

Re: loading the whole text file into an array

cyn811-Apr-07 23:19

cyn8

11-Apr-07 23:19

i want get characters from the file and put it in one array. Can i use getline or other functions. This array must be able to save the file content exactly because i want to use the array to save it in another file at a specified location or path.

Re: loading the whole text file into an array

Paresh Chitte11-Apr-07 23:10

Paresh Chitte

11-Apr-07 23:10

Try using CString.

Regards,

Paresh.

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