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it turns out that sql server isn't returning all the xml in one row of the recordset
so the answer is moveNext() then keep chunking.
hope this helps someone else one day, it was driving me crazy
I better explain the whole problem so google can find this post.
when using a recordset to read in a FOR XML EXPLICIT select from mssql server in vc++
the first recordset field does not contain the entire xml string, only a segment, the size of which must depend on the size of buffer set somewhere, i think in mssql.
the xml string is spread over n recordset rows
to get the next section you must move to the next record and so on.
the following code solve the problem
<br />
m_pRecordset = m_pCommand->Execute(NULL, NULL, adCmdStoredProc);<br />
<br />
while(!m_pRecordset->EndOfFile)<br />
{<br />
lOffset = 0;<br />
lTotalSize = m_pRecordset->Fields->GetItem(long(0))->ActualSize/2;
<br />
<br />
if (lTotalSize <= 0)<br />
{<br />
return false;<br />
}<br />
<br />
while (lOffset < lTotalSize)<br />
{<br />
bsChunk = m_pRecordset->Fields->GetItem(long(0))->GetChunk(lChunkSize);<br />
bsXML = bsXML + bsChunk;<br />
lOffset = lOffset + lChunkSize;<br />
}<br />
m_pRecordset->MoveNext();<br />
}<br />
m_sXML = (string)bsXML;<br />
mat
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Hi,
I have a dialog based application on which I have a tab control made of dialogs. On the tab pages I have some controls. I want to move some of these controls dynamically.
The control's start coordinates seen from the resource view are (7,3), which should be seen as left:7,top:3 from a CRect type. I see some strange behaviour with the below codes (called from CTab1Dlg class member functions):
Test 1:
CRect rect;<br />
GetDlgItem(IDC_STAT1)->GetClientRect(&rect);
GetDlgItem(IDC_STAT1)->MoveWindow(&rect);<br />
UpdateData(false);
afterwards the control moves to the left and upwards.
Test 2:
If I put this line before MoveWindow() line above, then the control still moves to left and upwards, but this time a little.
rect.OffsetRect(7,3);
Test 3:
If I change the inputs to (11,5), then the position does not change:
rect.OffsetRect(11,5);
Test 4:
If I try to get the coordinates of the tab's dialog then I get an access violation when i try to reach its members:
GetDlgItem(IDD_TAB1)->GetClientRect(&rect);
I want to shift the controls upwards and downwards dynamically. How can I get the correct initial coordinates?
thanks in advance
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There is some mixing of terminology going on here.
The resource view coords (7,3) are in dialog coordinates.
The relationship between these and pixel coords varies depending
on DPI. This the big / small fonts in the display control panel.
Taking Test1:
GetDlgItem(IDC_STAT1)->GetClientRect(&rect);
This returns the client coordinates which *always* starts at (0,0)
for its top left. These are relative to IDC_STAT1.
You want:
GetDlgItem(IDC_STAT1)->GetWindowRect(&rect);
ScreenToClient (&rect);
instead.
Test2:
This shows that dialog and screen coords are not the same thing.
Test3:
You've experimentally found the result of MapDialogRect
function. But be careful. The results will change on a high resolution
screen, where someone has chosen larger fonts. This used to be rare,
but these days you can get very high res laptop displays.
Test4:
You haven't provided enough information for this.
Again, you are using GetClientRect instead of GetWindowRect / ScreenToClient.
Dies GetDlgItem (IDD_TAB1) work? Or does it return NULL?
I hope this puts you on the right path,
Iain.
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Thank you. That helped.
caykahve
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See the "Extras" section of this article.
"Take only what you need and leave the land as you found it." - Native American Proverb
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is that David Crow leaning sidewise ?  .. you are like a BOSS so try Bolding it or just leave it like David Crow. it luks great.
He is like a one-legged man in a bum kicking competition. -Novjot Sidhu
--[v]--
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Hi all,
I have a .c file in my project and I want to convert it to the assebly file that is .asm file. Do anybody how can i do this in VC 6.0
Thanks in advance.
Ritu Kwatra
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Ritu Kwatra wrote: I have a .c file in my project and I want to convert it to the assebly file that is .asm file. Do anybody how can i do this in VC 6.0
Start Debugging in Debug MODE with Disassembly button enabled
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
-- modified at 3:47 Monday 17th October, 2005
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In VC, Open Project->Project Settings->[Tab C/C++]
on that Tab, in Listing file type, choose Assembly with source code. This outputs the desired .asm file.
Hope this helps
~RaGE();
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Hi all,
I have a .c file in my project and I want to convert it to the assebly file that is .asm file. Do anybody how can i do this in VC 6.0
Thanks in advance.
Ritu Kwatra
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How can I check for the version of Windows during installation of my application in a setup program using Launch Conditions Editor in the Setup Project of Visual Studio? What condition I should use and how?
Secondly, if my software is meant only for Win NT, 2000 and XP, can I safely afford to exclude InstMsiA.exe bootstrapper file in my setup files?
Thanks.
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I am doing profiling on a program.When i am doing "function timing" and
"Function coverage" the result are properly present in the profile window and i can copy all the result into a file.But when i do "line profiling" all the result from the begining are not seen in the profile window.Can i save the result directly into a file(say notepad/wordpad) while the line profiling is going on.
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Can I use the Setup Project provided with Visual Studio .NET for preparing Installation for my VC++ project?
Thanks
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when built my program in VC++ 6.0,I frequently receive a message box displaying "this file has been modified out of the source editor , do you want to reload it?" , and after this, I find that the file is indeed changed and in turn some errors occured, how can this happen?
afterwards, I find a clue for this error: the file being modified each time is the same file named "DetailedDesign.h". and the file is changed typically when I make a call to "rebuild all".
so I tried setting the file "read only",and when I call "rebuild all", one error occured, following are all of the generated informations:
Deleting intermediate files and output files for project 'DetailedDesign - Win32 Debug'.
Error: Could not delete file "E:\my project
\DetailedDesign\DetailedDesign.h" : access denied。
--------------------Configuration: DetailedDesign - Win32 Debug--------------------
Creating Type Library...
Microsoft (R) MIDL Compiler Version 5.01.0164
Copyright (c) Microsoft Corp 1991-1997. All rights reserved.
Processing E:\my project\DetailedDesign\DetailedDesign.idl
DetailedDesign.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\oaidl.idl
oaidl.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\objidl.idl
objidl.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\unknwn.idl
unknwn.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\wtypes.idl
wtypes.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\ocidl.idl
ocidl.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\oleidl.idl
oleidl.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\servprov.idl
servprov.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\urlmon.idl
urlmon.idl
Processing D:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\msxml.idl
msxml.idl
midl : error MIDL2212 : error while writing to file .\.\DetailedDesign.h
Error executing midl.exe.
DetailedDesign.dll - 1 error(s), 0 warning(s)
thank you very much ,any info is appreciated!
I am trying to love c++
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What have you chosen as output directory for your Debug session ? Is it E:\my project\DetailedDesign\ ?
Where is this file located in your Source Browser ?
Is this file somehow auto-generated ?
~RaGE();
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all of my source files including the "DetailedDesign.h" are in the dirctory "E:\my project\DetailedDesign\", and the Debug output directory is " E:\my project\DetailedDesign\Debug" as default
-------------------
I am trying to love c++
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Can any one help me to find data encoding of received buffer with WSARecv() command.
Weather data send by client is in UNICODE or in ASCII format
E.g.:
WSARecv (AcceptSocket, &DataBuf, 1, &RecvBytes, &Flags, &AcceptOverlapped, NULL)
DataBuf.buff is in ASCII or in UNICODE
Regads,
Madhu S. Kapoor
Madhu S. Kapoor
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Madhu Sudan Kapoor wrote: WSARecv (AcceptSocket, &DataBuf, 1, &RecvBytes, &Flags, &AcceptOverlapped, NULL)
Is upto you in which form you want to recv data
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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Let me confess that I am fresher in network programming can any one help me???
I made very simple server using IOCP but my server is unable to receive all the message. Here is code for my server
#include "stdafx.h"
//#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include "winsock2.h"
#include "fstream"
#include "conio.h"
#include "stdio.h"
#pragma comment(lib,"ws2_32.lib")
/*--- MACRO Defination --*/
#define SERVER_PORT htons(8888)
#define DATA_BUFSIZE 4096
#define OP_READ 0
#define OP_WRITE 1
#define OP_ACCEPT 2
/* OverlapPlus Data Used to store Ovelap info and other information need to user*/
typedef struct _OVERLAPPEDPLUS
{
OVERLAPPED Overlapped;
SOCKET sServer,sClient;
int nOperationCode;
WSABUF wbuf;
DWORD dwBytes,dwFlags;
SOCKADDR_STORAGE ClientAddr;
int nClientNumber;
}OVERLAPPEDPLUS, * LP_OVERLAP_PLUS;
void Initialize();
DWORD WINAPI ServerWorkerThread(LPVOID lpParam);
FILE *stream;
void appendLog(TCHAR* strMessage)
{
stream = _wfopen( _T("c:\\iServer.log"), _T("a") );
fputws(_T("\n"),stream);
fputws(strMessage,stream);
fclose( stream );
}
int main()
{
WSADATA wsd;
SYSTEM_INFO SystemInfo;
SOCKADDR_IN InternetAddr;
SOCKET sListen;
HANDLE hIocp;
int nClientInc = 1;
/* Initialize Winsock2 */
Initialize();
/*--- Create an I/O completion port ---*/
hIocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0);
if(NULL == hIocp)
{
printf("Error in initialization of Completion Port! Press any to exit...");
return -1;
}
/* Determine how many processors are on the system, For thead optimization */
GetSystemInfo(&SystemInfo);
/*--- Create worker threads based on the number of processors available on the system ---*/
for(int nProcessor = 0; nProcessor < (int) SystemInfo.dwNumberOfProcessors; nProcessor++)
{
HANDLE ThreadHandle;
ThreadHandle = CreateThread(NULL, 0,ServerWorkerThread, hIocp,0, NULL);
//CloseHandle(ThreadHandle); // Why We close thread Handle ?????
}
/*--- Create a listening socket --- */
sListen = WSASocket(AF_INET, SOCK_STREAM, 0, NULL, 0,WSA_FLAG_OVERLAPPED);
/*--- Fill TCP Header Info for bind a socket ---*/
InternetAddr.sin_family = AF_INET;
InternetAddr.sin_addr.s_addr = htonl(INADDR_ANY);
InternetAddr.sin_port = SERVER_PORT;
/*-- Bind the socket with port --*/
bind(sListen, (PSOCKADDR) &InternetAddr, sizeof(InternetAddr));
/*--- Prepare socket for listening mode and Start the Server ---*/
listen(sListen, 5);
printf("Server Started in listen mode ....");
while(TRUE)
{
int ret;
char strBuffer[DATA_BUFSIZE];
ULONG_PTR *PerHandleKey;
OVERLAPPED *Overlap;
OVERLAPPEDPLUS *OverlapPlus,*olpClientOverlappedPlusData;
DWORD dwBytesXfered;
SOCKET sClient;
SOCKADDR_IN saRemote;
int nRemoteLen;
/*-- Accept connections and assign to the completion port--*/
nRemoteLen = sizeof(saRemote);
sClient = WSAAccept(sListen, (SOCKADDR *)&saRemote,&nRemoteLen,0 , 0);
printf("New Client! Socket number %d connected\n", sClient);
/* Allocate memory to olpClientOverlappedPlusData */
olpClientOverlappedPlusData = (LP_OVERLAP_PLUS)GlobalAlloc(GPTR, sizeof(OVERLAPPEDPLUS));
if(NULL == olpClientOverlappedPlusData)
{
printf("Error in initialization Memory! Press any to exit...");
return -1;
}
/*-- Fill OverlapPlusData -- */
olpClientOverlappedPlusData->sClient = sClient;
olpClientOverlappedPlusData->nClientNumber = nClientInc++;
olpClientOverlappedPlusData->nOperationCode = OP_READ;
olpClientOverlappedPlusData->wbuf.buf = strBuffer;
olpClientOverlappedPlusData->wbuf.len = DATA_BUFSIZE;
memcpy(&olpClientOverlappedPlusData->ClientAddr, &saRemote, nRemoteLen);
// Associate the accepted socket with the completion port
if(NULL == CreateIoCompletionPort((HANDLE)sClient, hIocp,(ULONG_PTR)0,0) )
{
printf("Error in initialization of Completion Port for server! Press any to exit...");
return -1;
}
/*-- Make Ready to Recive Data From given Port -- */
ret = WSARecv(sClient,&olpClientOverlappedPlusData->wbuf,1,&olpClientOverlappedPlusData->dwBytes,&olpClientOverlappedPlusData->dwFlags,&olpClientOverlappedPlusData->Overlapped, NULL);
}
return 0;
}
DWORD WINAPI ServerWorkerThread(LPVOID CompletionPortID)
{
/*-- Notify Starting of server -- */
printf("\nHello Server Started, I am in worker thread! \n");
HANDLE hIocp = (HANDLE) CompletionPortID;
ULONG_PTR *PerHandleKey;
OVERLAPPED *Overlap;
OVERLAPPEDPLUS *OverlapPlus,*newolp;
DWORD dwBytesXfered;
int ret;
char *strData ;
while (1)
{
ret = GetQueuedCompletionStatus(hIocp,&dwBytesXfered,(PULONG_PTR)&PerHandleKey,&Overlap,INFINITE);
if (ret == 0){
continue;
}
OverlapPlus = CONTAINING_RECORD(Overlap, OVERLAPPEDPLUS, Overlapped);
/*--- Process Data According to Operation Code ---*/
switch (OverlapPlus->nOperationCode )
{
case OP_READ:
// Process the data read Repost the read if necessary, reusing the same receive buffer as before
memset(&OverlapPlus->Overlapped, 0, sizeof(OVERLAPPED));
ret = WSARecv(OverlapPlus->sClient,&OverlapPlus->wbuf,1,&OverlapPlus->dwBytes,&OverlapPlus->dwFlags,&OverlapPlus->Overlapped, NULL);
appendLog((TCHAR*) &OverlapPlus->wbuf.buf[0]);
ZeroMemory(&(OverlapPlus->Overlapped),sizeof(OVERLAPPED));// Why we reset memory ???
printf("\n\n****Inforamtion*****\n\nClient Socket:%d \n Bytes:%d \n Buff :%s \n Client No: %d\n FLAG :%d ",(int)OverlapPlus->sClient,OverlapPlus->dwBytes,OverlapPlus->wbuf.buf,OverlapPlus->nClientNumber,OverlapPlus->dwFlags);
if (ret == SOCKET_ERROR)
{
ret = WSAGetLastError();
if ( ret != WSA_IO_PENDING)
{
// What should i do in case of Error???
//printf("Error occur at WSARecv() : %d", ret);
//ExitThread(0);
break;
}
}
break;
case OP_WRITE:
// Process the data sent, etc.
break;//…
}
}
}
void Initialize()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
printf("\n couldn't find a useable winsock.dll");
exit(1);
}
}
Madhu S. Kapoor
Madhu S. Kapoor
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:->
Using VC++.NET2003
I have written serial routines (ported from Apollo) as follows:
but I am finding that with a serial loopback setup
the leading bit is reset on all chars (ie. transmit 0xff and receive only 0x7f)
I have a feeling its to do with binary vs text mode but I am unable to resolve.
Code:
CSerial::CSerial (LPCTSTR pszCommPort, LPCTSTR pszMode , char LineTerminator)
{
m_strCommsPort = pszCommPort;
m_strMode = pszMode;
m_LineTerminator = LineTerminator;
}
CSerial::~CSerial ()
{
ios_$close();
}
void CSerial::ios_$close(void)
{
if ( m_Port != INVALID_HANDLE_VALUE )
{
ios_$flush();
CloseHandle ( m_Port );
m_Port = INVALID_HANDLE_VALUE;
}
}
bool CSerial::ios_$open(void)
{
COMMTIMEOUTS lpCommTimeouts;
LPCOMMTIMEOUTS pPortTimeouts = &lpCommTimeouts;
m_Port = CreateFile( m_strCommsPort, GENERIC_READ |
GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if ( m_Port == INVALID_HANDLE_VALUE )
{
char szBuffer[256];
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL,
GetLastError(), MAKELANGID(LANG_NEUTRAL,
SUBLANG_DEFAULT),szBuffer, sizeof szBuffer, NULL );
strcat ( szBuffer, " opening " );
strcat ( szBuffer, m_strCommsPort );
MessageBox(NULL, szBuffer, "CIMW", MB_OK);
return false;
}
DCB dcb;
dcb.DCBlength = sizeof DCB;
GetCommState(m_Port, &dcb );
BuildCommDCB(m_strMode, & dcb);
dcb.fBinary = true;
dcb.fOutxDsrFlow = 0;
dcb.fOutxCtsFlow = 0;
dcb.fOutX = 0;
dcb.fInX = 0;
dcb.fDtrControl = DTR_CONTROL_ENABLE;
dcb.fRtsControl = RTS_CONTROL_ENABLE;
// Maximum time between read chars.
lpCommTimeouts.ReadIntervalTimeout = MAXDWORD;
// Multiplier of characters.
lpCommTimeouts.ReadTotalTimeoutMultiplier = 0;
// Constant in milliseconds.
lpCommTimeouts.ReadTotalTimeoutConstant =0;
// Multiplier of characters.
lpCommTimeouts.WriteTotalTimeoutMultiplier = 100;
// Constant in milliseconds.
lpCommTimeouts.WriteTotalTimeoutConstant = 1000;
SetCommTimeouts(m_Port, pPortTimeouts);
SetCommState(m_Port, & dcb);
return true;
}
bool CSerial::ios_$put ( const unsigned char *pszPacket, int iLen)
{
int iPut = 0;
for (int x=0; x < iLen; x++ )
{
ios_$putchar ( pszPacket[x] );
iPut++;
if (iPut >= iLen)
{
return true;
}
}
return true;
}
bool CSerial::ios_$putchar(unsigned char cByte)
{
DWORD bytesWritten;
bool bWrite;
bWrite = (bool)WriteFile ( m_Port, (void *)&cByte, 1,
&bytesWritten, NULL );
return bWrite;
}
int CSerial::ios_$get(unsigned char *cByte)
{
int iError;
int iCode;
DWORD bytesRead;
LPDWORD pBytesRead = &bytesRead;
iCode = ReadFile ( m_Port, (unsigned char *)cbyte,
1,pBytesRead, NULL);
if (bytesRead == 0)
{
return 0;
iError = GetLastError();
}
else
{
*cByte = x;
}
return 1;
}
void CSerial::ios_$flush()
{
PurgeComm ( m_Port, PURGE_RXCLEAR );
}
Ian
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I haven't looked closely at the rest of the code, but try adding
to the device control block configuration to make sure the UART isn't defaulting to 7 bit mode.
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HI, I have found the error is not the software but the edgeport/4S USB serial port hardware I am using. I tested the software on a direct RS232 port and it worked correctly. I have since found that re-installing the edgport/4s 4 port unit and then re-instating RS422 has fixed the problem.
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Hi all !!
I practise VC. When I code my program to create a file.
The first time when I click my button2 (create file) I receive a error "access pathdir to file is denied" but I can create file at the second click. I don't know why ??? Please,I need help !!
This's my code when click button2, I use MFC wizard (use dialogbase)
void CTestDlg::OnButton2()
{
// TODO: Add your control notification handler code here
char filename[100];
GetCurrentDirectory(100,filename);
strcat(filename,"\\RongVang.dat");
CFile f;
if(!f.Open(filename,CFile::modeReadWrite))
f.Open(filename,CFile::modeCreate);
f.SeekToEnd();
char s[100];
strcpy(s,"Test Create file");
f.Write(s,100);
}
-- modified at 22:36 Sunday 16th October, 2005
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the filename return format is not like this"C:\\ adir"
it return format is "C:\adir"
it can't use as a parameter in F.Open Function .
d
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Thank so much !!
But how can i slove it ....
Can you show me .....
I've just program...
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