C / C++ / MFC

Re: why are junk char appended while writing CString to CFile

13-Mar-08 3:59

Basically because you're passing a junk buffer to write operation.
(i.e. post the relevant code)
Smile | :)

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

ptr_Electron13-Mar-08 4:08

ptr_Electron

13-Mar-08 4:08

no it is along with the valid data and some junk

ÍÍýýýÝÝÝÝÝÝÝÝÝÝÝÝÝa qÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍSearch Location 6001 1243420 1404568

Re: why are junk char appended while writing CString to CFile

CPallini13-Mar-08 4:21

Re: why are junk char appended while writing CString to CFile

13-Mar-08 4:21

Try to delete the file and run again your application.
Smile | :)

Rajkumar R13-Mar-08 4:22

Re: why are junk char appended while writing CString to CFile

13-Mar-08 4:22

check whether the file already contains data or the value of strAbc at
strLine.Format("%s %d %d %d",strAbc,dDlgResID,dwData,nCmd);

ptr_Electron13-Mar-08 4:26

ptr_Electron

13-Mar-08 4:26

well, yes.. it will, because I am always opeing ...appending the new string.. closing

Re: why are junk char appended while writing CString to CFile

Rajkumar R13-Mar-08 4:39

Re: why are junk char appended while writing CString to CFile

13-Mar-08 4:39

I mean may be the file already contains the junk data, otherwise strAbc contains junk data. Check whether strAbc contains correct data when you debugged at Format() statement.

Chris Meech13-Mar-08 4:25

Chris Meech

13-Mar-08 4:25

If you are 'dumping' the entire contents of a CString instance to a file, then be aware that the class encapsulates more than just a data buffer with some text in it. It has other data items such as length for example.

Chris Meech
I am Canadian. [heard in a local bar]
Donate to help Conquer Cancer[^]

Re: why are junk char appended while writing CString to CFile

ptr_Electron13-Mar-08 4:36

ptr_Electron

13-Mar-08 4:36

strLine.Format("%s %d %d %d",strAbc,dDlgResID,dwData,nCmd);
strLine=strLine+"\r\n";
CStdioFile file;
file.Open("c:\\kkk.txt", CStdioFile::modeCreate|CStdioFile::modeNoTruncate|CStdioFile::modeReadWrite);
file.SeekToEnd();
file.Write(strLine,strLine.GetLength());

Thanks Friends....above code Did the clean job

Re: why are junk char appended while writing CString to CFile

Mark Salsbery13-Mar-08 6:58

Mark Salsbery

13-Mar-08 6:58

Excellent! Don't listen to those GetBuffer() fanatics Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

need help in source code to find data in database

ieyra20413-Mar-08 3:13

ieyra204

13-Mar-08 3:13

// ODBC1View.cpp : implementation of the CODBC1View class<br />
//<br />
<br />
#include "FindNoPlat.h"<br />
#include "stdafx.h"<br />
#include "ODBC1.h"<br />
<br />
#include "ODBC1Set.h"<br />
#include "ODBC1Doc.h"<br />
#include "ODBC1View.h"<br />
<br />
#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#undef THIS_FILE<br />
static char THIS_FILE[] = __FILE__;<br />
#endif<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View<br />
<br />
IMPLEMENT_DYNCREATE(CODBC1View, CRecordView)<br />
<br />
BEGIN_MESSAGE_MAP(CODBC1View, CRecordView)<br />
	//{{AFX_MSG_MAP(CODBC1View)<br />
	ON_COMMAND(ID_RECORD_APPEND, OnRecordAppend)<br />
	ON_BN_CLICKED(IDC_CHOICE1, OnChoice1)<br />
	ON_BN_CLICKED(IDC_CHOICE2, OnChoice2)<br />
	ON_COMMAND(ID_RECORD_FIND, OnRecordFind)<br />
	//}}AFX_MSG_MAP<br />
	// Standard printing commands<br />
	ON_COMMAND(ID_FILE_PRINT, CRecordView::OnFilePrint)<br />
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CRecordView::OnFilePrint)<br />
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CRecordView::OnFilePrintPreview)<br />
END_MESSAGE_MAP()<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View construction/destruction<br />
<br />
CODBC1View::CODBC1View()<br />
	: CRecordView(CODBC1View::IDD)<br />
{<br />
	//{{AFX_DATA_INIT(CODBC1View)<br />
	m_pSet = NULL;<br />
	m_cStatus_saman = _T("");<br />
	//}}AFX_DATA_INIT<br />
	// TODO: add construction code here<br />
<br />
}<br />
<br />
CODBC1View::~CODBC1View()<br />
{<br />
}<br />
<br />
void CODBC1View::DoDataExchange(CDataExchange* pDX)<br />
{<br />
	int	iStrLength;<br />
<br />
	iStrLength = m_pSet->m_Status_saman.GetLength();<br />
	m_cStatus_saman="$"+m_pSet->m_Status_saman.Left(iStrLength-2);<br />
<br />
	<br />
	CRecordView::DoDataExchange(pDX);<br />
	//{{AFX_DATA_MAP(CODBC1View)<br />
	DDX_Control(pDX, IDC_CHOICE2, m_oChoice2);<br />
	DDX_Control(pDX, IDC_CHOICE1, m_oChoice1);<br />
	DDX_Control(pDX, IDC_EDIT4, m_opermit_perjalanan);<br />
	DDX_Control(pDX, IDC_EDIT3, m_oStatus_saman);<br />
	DDX_Control(pDX, IDC_EDIT2, m_oSykt);<br />
	DDX_Control(pDX, IDC_EDIT1, m_oNo_plat);<br />
	DDX_FieldText(pDX, IDC_EDIT1, m_pSet->m_No_plat, m_pSet);<br />
	DDX_FieldText(pDX, IDC_EDIT2, m_pSet->m_Sykt, m_pSet);<br />
	DDX_FieldText(pDX, IDC_EDIT4, m_pSet->m_permit_perjalanan, m_pSet);<br />
	DDX_Text(pDX, IDC_EDIT3, m_cStatus_saman);<br />
	//}}AFX_DATA_MAP<br />
}<br />
<br />
BOOL CODBC1View::PreCreateWindow(CREATESTRUCT& cs)<br />
{<br />
	// TODO: Modify the Window class or styles here by modifying<br />
	//  the CREATESTRUCT cs<br />
<br />
	return CRecordView::PreCreateWindow(cs);<br />
}<br />
<br />
void CODBC1View::OnInitialUpdate()<br />
{<br />
	m_pSet = &GetDocument()->m_oDBC1Set;<br />
	CRecordView::OnInitialUpdate();<br />
	GetParentFrame()->RecalcLayout();<br />
	ResizeParentToFit();<br />
<br />
}<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View printing<br />
<br />
BOOL CODBC1View::OnPreparePrinting(CPrintInfo* pInfo)<br />
{<br />
	// default preparation<br />
	return DoPreparePrinting(pInfo);<br />
}<br />
<br />
void CODBC1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)<br />
{<br />
	// TODO: add extra initialization before printing<br />
}<br />
<br />
void CODBC1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)<br />
{<br />
	// TODO: add cleanup after printing<br />
}<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View diagnostics<br />
<br />
#ifdef _DEBUG<br />
void CODBC1View::AssertValid() const<br />
{<br />
	CRecordView::AssertValid();<br />
}<br />
<br />
void CODBC1View::Dump(CDumpContext& dc) const<br />
{<br />
	CRecordView::Dump(dc);<br />
}<br />
<br />
CODBC1Doc* CODBC1View::GetDocument() // non-debug version is inline<br />
{<br />
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CODBC1Doc)));<br />
	return (CODBC1Doc*)m_pDocument;<br />
}<br />
#endif //_DEBUG<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View database support<br />
CRecordset* CODBC1View::OnGetRecordset()<br />
{<br />
	return m_pSet;<br />
}<br />
<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CODBC1View message handlers<br />
<br />
void CODBC1View::OnRecordAppend() <br />
{<br />
	// TODO: Add your command handler code here<br />
<br />
	if (m_pSet->CanAppend() == 0)<br />
		MessageBox("Cannot Append Records",<br />
		"Database Opening Error",<br />
		MB_OK|MB_ICONERROR);<br />
<br />
	else<br />
	{<br />
		m_oChoice1.SetWindowText("Submit Data");<br />
		m_oChoice2.SetWindowText("Cancel");<br />
<br />
	<br />
<br />
		m_oNo_plat.SetWindowText("");<br />
		m_oSykt.SetWindowText("");<br />
		m_oStatus_saman.SetWindowText("");<br />
		m_opermit_perjalanan.SetWindowText("");<br />
	}<br />
<br />
}<br />
<br />
void CODBC1View::OnChoice1() <br />
{<br />
	// TODO: Add your control notification handler code here<br />
<br />
<br />
}<br />
<br />
void CODBC1View::OnChoice2() <br />
{<br />
	// TODO: Add your control notification handler code here<br />
	<br />
}<br />
<br />
void CODBC1View::OnRecordFind() <br />
{<br />
	// TODO: Add your command handler code here<br />
<br />
	FindNoPlat   oFindIt;//CREATE AN INSTANCE OF DIALOG BOX<br />
	BOOL	     Found=FALSE;//did find a match record?<br />
	int			 iStrLength;//length of the string<br />
	char*		 cQuantity="Empty1";//text value of Quantity field<br />
	char*		 cStorage="Empty2";//text value of Storage field<br />
	CDBVariant	 varBookmark;//positioning bookmark<br />
<br />
if (oFindIt.DoModal()==IDOK)<br />
<br />
{<br />
	if	(m_pSet->CanBookmark())<br />
		m_pSet->GetBookmark(varBookmark);<br />
<br />
	m_pSet->MoveFirst();<br />
<br />
<br />
	while	(!m_pSet->IsEOF() ^ Found);<br />
<br />
		{<br />
		if	(m_pSet->m_No_plat == oFindIt.m_FindNoPlat);<br />
			Found=TRUE;<br />
<br />
			<br />
			m_pSet->MoveNext();<br />
<br />
		}<br />
<br />
		if	(!Found);<br />
<br />
			{<br />
<br />
				MessageBox("Record not found!",<br />
					"Database Error",<br />
				MB_OK|MB_ICONERROR);<br />
<br />
			if (m_pSet->CanBookmark())<br />
			m_pSet->SetBookmark(varBookmark);<br />
<br />
			else<br />
			m_pSet->MoveFirst();<br />
<br />
			}<br />
		<br />
<br />
		{<br />
<br />
		m_oNo_plat.SetWindowText(m_pSet->m_No_plat);<br />
		m_oSykt.SetWindowText(m_pSet->m_Sykt);<br />
		m_opermit_perjalanan.SetWindowText(m_pSet->m_permit_perjalanan);<br />
<br />
			<br />
			iStrLength = m_pSet->m_Status_saman.GetLength();<br />
			m_oStatus_saman.SetWindowText("$" + m_pSet->m_Status_saman);<br />
	}<br />
}<br />
<br />
<br />
}<br />
<br />
<br />

hello,
this code is use to find the data in database(ms access).. im building a database application using ODBC..

there were 5 error while compile it:

error C2065: 'FindNoPlat' : undeclared identifier
error C2146: syntax error : missing ';' before identifier 'oFindIt'
error C2065: 'oFindIt' : undeclared identifier
error C2228: left of '.DoModal' must have class/struct/union type
error C2228: left of '.m_FindNoPlat' must have class/struct/union type

can someone explain it to me...

tq,
Sigh | :sigh:

Re: need help in source code to find data in database

David Crow13-Mar-08 3:17

David Crow

13-Mar-08 3:17

ieyra204 wrote:
error C2065: 'FindNoPlat' : undeclared identifier

C2065

ieyra204 wrote:
error C2146: syntax error : missing ';' before identifier 'oFindIt'

C2146

etc.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: need help in source code to find data in database

CPallini13-Mar-08 3:36

13-Mar-08 3:36

Error messages are quite informative, for instance,

ieyra204 wrote:
error C2065: 'FindNoPlat' : undeclared identifier
error C2146: syntax error : missing ';' before identifier 'oFindIt'

suggest checking if there is a class named FindNoPlat in FindNoPlat.h header file.
Smile | :)

Plz Help!!!

dheka13-Mar-08 3:06

dheka

13-Mar-08 3:06

My application is having Memory Leakage!! How to Solve this problem..

Rajesh R Subramanian13-Mar-08 3:10

Rajesh R Subramanian

13-Mar-08 3:10

I would use a stop cork and block the leakage. Seriously, you need to be more specific than that.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: Plz Help!!! [OT]

Rajkumar R13-Mar-08 3:25

13-Mar-08 3:25

Rajesh R Subramanian wrote:
I would use a stop cork and block the leakage

Memory Leakage!!

what do you say about "Memory Boosters".

Re: Plz Help!!! [OT]

David Crow13-Mar-08 5:41

David Crow

13-Mar-08 5:41

Rajkumar R wrote:
what do you say about "Memory Boosters".

I can't remember.

Re: Plz Help!!! [OT]

Rajkumar R13-Mar-08 5:57

13-Mar-08 5:57

I am poor in english, but i didn't asked "what did you said about "Memory boosters""

DavidCrow wrote:
I can't remember.

may be using a stop cork prevents further leakage. Smile | :)

CPallini13-Mar-08 3:38

13-Mar-08 3:38

Perform cleanup correctly (i.e. you really need to be more specific).
Smile | :)

Mark Salsbery13-Mar-08 7:00

Mark Salsbery

13-Mar-08 7:00

I've found the best way is to make sure I destroy any resources
that I've acquired when they are no longer needed.

Trust me on this one....it works.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Rajesh R Subramanian13-Mar-08 7:11

Rajesh R Subramanian

13-Mar-08 7:11

Mark Salsbery wrote:
I've found the best way is to make sure I destroy any resources
that I've acquired when they are no longer needed.

Hello Mr. Mark,

I've destroyed my PS3 after I finished playing burnout on it, since I no longer needed it today. I then burnt my refrigerator after I took out all the beer. I'm 'working up' on the air conditioner with a hammer now. But the memory leakage still exists. Please help me with further course of action. Cry | :((

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Rajkumar R13-Mar-08 7:28

13-Mar-08 7:28

innovative.
ROTFL!!!

Mark Salsbery13-Mar-08 7:44

Mark Salsbery

13-Mar-08 7:44

When I read part of your post in the response email, I thought it was from the OP.

I was thinking, oh no, this guy's falling apart hehe.

Beer | [beer]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]