Images in every column of listcontrol - C / C++ / MFC Discussion Boards

Re: Detours and SetWindowsHookEx question

yonghengzhimi27-Apr-08 15:09

yonghengzhimi

27-Apr-08 15:09

URLDownloadToCacheFile question

monsieur_jj24-Apr-08 21:14

monsieur_jj

24-Apr-08 21:14

Hi all,

What function can I use that is similar to URLDownloadToCacheFile but with the ability to download the part of a file that wasnt downloaded if an internet disconnection happens. I am thinking of a windowsupdate type of download which if I stop downloading the updates I can resume where i stopped.

thanks,
Jj

Re: URLDownloadToCacheFile question

David Crow25-Apr-08 3:34

David Crow

25-Apr-08 3:34

See here.

"Love people and use things, not love things and use people." - Unknown

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

Re: URLDownloadToCacheFile question

monsieur_jj30-Apr-08 15:34

monsieur_jj

30-Apr-08 15:34

thank you so much David

Using the Insert statement in mfc c++ to database

neo on poltek24-Apr-08 20:24

neo on poltek

24-Apr-08 20:24

I am having problems with INSERTING 'err' value, where the value always change(dinamic).
The error I am getting at runtime is "too few parameters expected 1". This is a part of the inserting program.

float err;
CDatabase db;
CString SqlString;

db.Open("ODBC;DSN=db");

SqlString="INSERT INTO report(ERROR_VALUE,STATUS) VALUES(err,'OK')";//value of 'err' not statis
db.ExecuteSQL( SqlString );

the program will run properly if syntax of inserting like this.

SqlString="INSERT INTO report(ERROR_VALUE,STATUS) VALUES('err','OK')";

but the output not value of "err", but string "err".
anyone can help me???? Frown | :(

Re: Using the Insert statement in mfc c++ to database

Rajkumar R24-Apr-08 21:05

Rajkumar R

24-Apr-08 21:05

neo on poltek wrote:
SqlString="INSERT INTO report(ERROR_VALUE,STATUS) VALUES(err,'OK')";//value of 'err' not statis

try,
SqlString.Format(_T("INSERT INTO report(ERROR_VALUE,STATUS) VALUES(%f,'OK')"), err);

Re: Using the Insert statement in mfc c++ to database

ShilpiP24-Apr-08 21:07

ShilpiP

24-Apr-08 21:07

SqlString="INSERT INTO report(ERROR_VALUE,STATUS) VALUES(";
SqlString += "'";
SqlString += err;
SqlString += "'";
SqlString += ",'OK')";
I think it is working please check.

Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

Images in every column of listcontrol

Kiran Pinjala24-Apr-08 20:19

Kiran Pinjala

24-Apr-08 20:19

I used the following code to show an image in the row of a listcontrol.

LV_ITEM lvi;	
	CString item,symbol;
	symbol = card.Right(1);
	int len = card.GetLength();
	item = card.Left(len-1);

	lvi.mask = LVIF_IMAGE | LVIF_TEXT ;
	lvi.iItem = 0;
	lvi.iSubItem = isubItem;
	lvi.pszText = item.GetBuffer(item.GetLength());
	lvi.stateMask = LVIS_STATEIMAGEMASK|LVM_SETITEMSTATE;

	 if(symbol.CompareNoCase("C")==0)
		lvi.iImage = 0;
	else if (symbol.CompareNoCase("D")==0)
		lvi.iImage = 1;
	else if(symbol.CompareNoCase("H")==0)
		lvi.iImage = 2;
	else if (symbol.CompareNoCase("S")==0)
		lvi.iImage = 3;

	player1.SetItem(&lvi);

There are 13 columns in the row. and there is only one row.
I wanted the image to be shown in every column of that row. But the image is being shown only in the first column. How to make it.

Thank you

Saadhinchaali

Re: Images in every column of listcontrol

Naveen24-Apr-08 21:08

Naveen

24-Apr-08 21:08

Saadhinchaali wrote:
How to make it.

You have to set LVS_EX_SUBITEMIMAGES style inorder to display images in subitem.

player1.SetExtendedStyle( player1.GetExtendedStyle()|LVS_EX_SUBITEMIMAGES );

nave

[OpenedFileFinder]

CFileDialog

john563224-Apr-08 19:59

john5632

24-Apr-08 19:59

Hi,

I am getting the problem to select multiple files.And DoModal is returning 2(IDCANCEL). Code is below:

<br />
<br />
TCHAR szFilters[]=_TEXT("All Files (*.*)|*.*||");<br />
	CFileDialog fileDlg (TRUE, _TEXT(""), _TEXT(""),OFN_FILEMUSTEXIST|OFN_EXPLORER|OFN_ALLOWMULTISELECT|OFN_HIDEREADONLY, szFilters, this);<br />
<br />
TCHAR * pc = new TCHAR[4096]();<br />
	fileDlg.m_ofn.lpstrFile=pc;<br />
	fileDlg.m_ofn.nMaxFile = 4096;<br />
	int nResVal=fileDlg.DoModal();<br />
<br />

What is the problem with it?

Re: CFileDialog

Naveen24-Apr-08 20:58

Naveen

24-Apr-08 20:58

pther wrote:
What is the problem with it?

The preblem is in

fileDlg.m_ofn.lpstrFile=pc;<br />
fileDlg.m_ofn.nMaxFile = 4096;

ASAIK you dont have to those parameter. You can get all the files selected using the GetStartPosition and GetNextPathName function.

TCHAR szFilters[]=_TEXT("All Files (*.*)|*.*||");<br />
CFileDialog fileDlg (TRUE, _TEXT(""), _TEXT(""),OFN_FILEMUSTEXIST|OFN_EXPLORER|OFN_ALLOWMULTISELECT|OFN_HIDEREADONLY, szFilters, this);<br />
int nResVal=fileDlg.DoModal();<br />
POSITION pos =  fileDlg.GetStartPosition();<br />
while( pos )<br />
{<br />
    CString cs = fileDlg.GetNextPathName( pos );<br />
}

nave

[OpenedFileFinder]

Re: CFileDialog

john563224-Apr-08 21:53

john5632

24-Apr-08 21:53

Without spacifying size of buffer, how could you get the all files path.
I read to define as on another forum.

Re: CFileDialog

Naveen24-Apr-08 23:18

Naveen

24-Apr-08 23:18

pther wrote:
Without spacifying size of buffer, how could you get the all files path.

Ok. MFC sets a buffer of length 256 in its constructor. But in your case that buffer will not be enough.

Any way just set the first element of the buffer as 0 after allocationg the buffer. Like..

TCHAR szFilters[]=_TEXT("All Files (*.*)|*.*||");<br />
CFileDialog fileDlg (TRUE, _TEXT(""), _TEXT(""),OFN_FILEMUSTEXIST|OFN_EXPLORER|OFN_ALLOWMULTISELECT|OFN_HIDEREADONLY, szFilters, this);<br />
TCHAR * pc = new TCHAR[4096];<br />
pc[0] = 0;<br />
fileDlg.m_ofn.lpstrFile=pc;<br />
int nResVal=fileDlg.DoModal();

nave

[OpenedFileFinder]

Re: CFileDialog

Hamid_RT24-Apr-08 21:02

Hamid_RT

24-Apr-08 21:02

See Multiple Selection in a File Dialog[^].

Re: CFileDialog

Saurabh.Garg24-Apr-08 22:13

Saurabh.Garg

24-Apr-08 22:13

I was not able to spot any problem with the code so I just tried your code in a new MFC dialog based application and it is working fine. So I guess problem is somewhere else.

-Saurabh

Re: CFileDialog

john563224-Apr-08 23:18

john5632

24-Apr-08 23:18

try more than 160 files

Re: CFileDialog

krmed25-Apr-08 0:42

krmed

25-Apr-08 0:42

If the number of files you select is causing it to fail, then your buffer is probably too small. With a buffer of 4096 and 160 files, that's only 25 characters per file.

Acccording to MSDN:

If the buffer is too small, the function returns FALSE and the CommDlgExtendedError function returns FNERR_BUFFERTOOSMALL. In this case, the first two bytes of the lpstrFile buffer contain the required size, in bytes or characters.

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Re: CFileDialog

Saurabh.Garg25-Apr-08 2:25

Saurabh.Garg

25-Apr-08 2:25

I am trying with VS 2008 under Vista and even if buffer is small I do not get FNERR_BUFFERTOOSMALL. CFileDialog simply return files it can with the given buffer. I couldn't find anything specific to this in MSDN.

-Saurabh

Re: CFileDialog

Saurabh.Garg25-Apr-08 2:22

Saurabh.Garg

25-Apr-08 2:22

I am using VS 2008 on Vista and it works even with 1000 files.

-Saurabh

Re: CFileDialog

Saurabh.Garg24-Apr-08 22:27

Saurabh.Garg

24-Apr-08 22:27

You can call

DWORD error = CommDlgExtendedError();

to find out what exactly is the problem.

-Saurabh

Re: CFileDialog

Nitheesh George24-Apr-08 22:59

Nitheesh George

24-Apr-08 22:59

Hi,
your code works fine for me also.

thanks,

Nitheesh

Re: CFileDialog

David Crow25-Apr-08 3:39

David Crow

25-Apr-08 3:39

pther wrote:
What is the problem with it?

How are we to know? What problem(s) are you seeing?

"Love people and use things, not love things and use people." - Unknown

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

Re: CFileDialog

Michael Schubert25-Apr-08 4:40

Michael Schubert

25-Apr-08 4:40

I had the same problem once with selecting *lots* of files, set "pc" to something like 64000.

"It is better to remain silent and be thought a fool, than to open your mouth and remove all doubt."

--Groucho Marx

Need solution for WSAEWOULDBLOCK

yaminisridaran24-Apr-08 19:49

yaminisridaran

24-Apr-08 19:49

I am trying to receive asynchronous sockets via udp but I am mostly getting WSAEWOULDBLOCK error . I anyone help me solving this problem

WSADATA wsaData;

int error = WSAStartup(0x202,&wsaData);

if(error)
return FALSE;

if(wsaData.wVersion != 0x202)
{
WSACleanup();
return FALSE;
}

m_UdpSock=(SOCKET)WSASocket(AF_INET,SOCK_DGRAM,0,NULL,NULL,0);
if(m_UdpSock==INVALID_SOCKET)
return FALSE;

sockaddr_in sockAddrServer;
sockAddrServer.sin_family=AF_INET;
sockAddrServer.sin_port=htons(port_data);
sockAddrServer.sin_addr.s_addr=INADDR_ANY;

// Bind socket to listener address
if(bind(m_UdpSock,(SOCKADDR*)&sockAddrServer,sizeof(sockaddr_in))==SOCKET_ERROR)
{
int y=WSAGetLastError();

printf("Unable to bind socket\n");
return FALSE;
}

// Create WinSock Event object
WSAEVENT eventWinsock=(WSAEVENT)WSACreateEvent();
if(eventWinsock==WSA_INVALID_EVENT)
{
printf("Unable to create winsock event\n");
return FALSE;
}

// Signal WinSock Event on receive packet
if(WSAEventSelect(m_UdpSock,eventWinsock,FD_READ)!=NOERROR)
{
printf("Unable to connect event to socket\n");
return FALSE;
}

//long length=50000;

// m_Thread=new CManager((LPVOID)this);
// m_Thread->CreateThread();

bool occurance=true;

while(m_abort)
{
Recvbuf=new char[BUFFER_SIZE];

TRACE("Before Receive Data\n");
//if(WaitForSingleObject(eventWinsock,INFINITE)== WAIT_OBJECT_0)
if(WaitForSingleObject(eventWinsock,INFINITE)== WAIT_OBJECT_0)
{
sockaddr_in sockAddrRecv;
int nSockAddrSize=sizeof(sockaddr_in);

// Packet received
EnterCriticalSection(&m_cs);
int nErr=recvfrom(m_UdpSock,Recvbuf,BUFFER_SIZE,0,(sockaddr*)&sockAddrRecv,&nSockAddrSize);
LeaveCriticalSection(&m_cs);
TRACE("Receive data\n");

if(nErr==SOCKET_ERROR)
{
TRACE("nErr %d\n",nErr);

nErr=WSAGetLastError();
if(nErr==WSAEWOULDBLOCK)
{
WSAEventSelect(m_UdpSock,eventWinsock,FD_READ);

WSANETWORKEVENTS wsevents;
WSAEnumNetworkEvents(m_UdpSock,eventWinsock,&wsevents);

DWORD dwEventId = WaitForSingleObject(eventWinsock,3000);
if(dwEventId == WAIT_TIMEOUT)
continue;
continue;

}
else
{
WSAEventSelect(m_UdpSock,eventWinsock,FD_READ);

WSANETWORKEVENTS wsevents;
WSAEnumNetworkEvents(m_UdpSock,eventWinsock,&wsevents);

DWORD dwEventId = WaitForSingleObject(eventWinsock,3000);
if(dwEventId == WAIT_TIMEOUT)
continue;
continue;

}

}

else
{
TRACE("Receive Data Size %d\n",nErr);

BYTE init=Recvbuf[0];

//EnQueue
m_Queue.SetAt(index,Recvbuf);
m_PacketSize.SetAt(index,nErr);

index++;

if(occurance)
{
DWORD dwThreadId1;
m_DeQueueThread=CreateThread(NULL,0,&Dequeue,this,CREATE_SUSPENDED,&dwThreadId1);
ResumeThread(m_DeQueueThread);
m_play->InitState=m_dequeue=true;
occurance=false;
}

}

}

}

Re: Need solution for WSAEWOULDBLOCK

Mark Salsbery25-Apr-08 6:14

Mark Salsbery

25-Apr-08 6:14

Has your code changed since I answered this a couple days ago?

If you post code wrapped in pre tags, most of us would be much more
inclined to read it.

It appears you still have the same problem as a couple days ago....
the code is wrong.

You're not using the event properly.

You can simplify your code to something like this (pseudocode):

create/init/connect the socket
WSACreateEvent
WSAEventSelect
while(m_abort)
{
    WaitForEvent
    WSAEnumNetworkEvents  (this will reset the event)
    if read event
    {
        read a datagram, or loop reading datagrams until you get a WSAEWOULDBLOCK error
    }
}

You also probably want another event so you have a way to exit the loop if no data is received...

create/init/connect the socket
create an abort event
WSACreateEvent
WSAEventSelect
while(m_abort)
{
    Wait For socket or abort Event (WaitForMultipleObjects)
    if abort event
    {
        break;
    }
    else
    {
        WSAEnumNetworkEvents  (this will reset the socket event)
        if read event
        {
            read a datagram, or loop reading datagrams until you get a WSAEWOULDBLOCK error
        }
    }
}

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

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