C / C++ / MFC

Freezing first columns of a CListCtrl

22-Jul-07 8:02

You're using ODBC directly? If so, it's fairly easy to do reading/writing of BLOB fields.

These are the only functions needed I believe, most of which you're probably already using if
you're using ODBC:

SQLAllocHandle()
(optional) SQLSetStmtAttr() to set synchronous/asynchronous and other statement attributes
(optional) SQLBindParameter() depending on the query
SQLExecDirect()
SQLFetch()
SQLGetData() / SQLPutData()
(optional) SQLParamData() depending on the query
SQLFreeHandle()

Mark

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

paper6722-Jul-07 5:09

paper67

22-Jul-07 5:09

Hi,

Is there any code out there that shows how to make the first colomns of a list control
static. That is when a horizontal scroll is made, the first columns of the control stays
in view. I searched the net for some info, but could not find any.

tia.

Michael Dunn22-Jul-07 14:14

Michael Dunn

22-Jul-07 14:14

No, you'll need something like a grid control to do that.

--Mike--
Visual C++ MVP Cool | :cool:

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ThatsAlok22-Jul-07 17:52

ThatsAlok

22-Jul-07 17:52

paper67 wrote:
Is there any code out there that shows how to make the first colomns of a list control
static.

By Design ListCtrl doesn't provide you thsi property but you can achieve same by writing your algo after subclassing the ListControl to make First Item Always Fixed User Scroll. it is pretty much easy if you use GridControl!

"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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David Crow23-Jul-07 3:29

David Crow

23-Jul-07 3:29

See if the Extras section of this article is of any help.

"A good athlete is the result of a good and worthy opponent." - David Crow

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

Show / Hide controls on a dialog

Nelek23-Jul-07 4:42

Nelek

23-Jul-07 4:42

What about two CListCtrl overlapped? In the first one the parts that you dont want to loose, in the other the rest. The only problem is you have to keep the CListCtrl scroll sincronized (for the other direction).

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Makakuin22-Jul-07 3:58

Makakuin

22-Jul-07 3:58

I`m trying to create dialog for collecting customer information in an MFC application. The dialog contains a radio button to switch between customer type (private or company) when user changes the customer type I need some controls on the dialog to disapear and others to become visible... What would be your suggestions in getting this done?

Re: Show / Hide controls on a dialog

Abhijeet Pathak22-Jul-07 4:29

Abhijeet Pathak

22-Jul-07 4:29

you can make a control invisible by using:
this->GetDlgItem(IDC_XXXXX)->ShowWindow(SW_HIDE);

and visible by:

<br />
this->GetDlgItem(IDC_XXXXX)->ShowWindow(SW_SHOW);

where IDC_XXXXX is the ID of the control.

Re: Show / Hide controls on a dialog

Mark Salsbery22-Jul-07 8:09

Re: Show / Hide controls on a dialog

22-Jul-07 8:09

Also you can use ON_BN_CLICKED to get notifications when the user clicks a radio button.

In response to the notification(s) you can check if a radio button is "checked" using

CButton::GetCheck() or the BM_GETCHECK message.

Mark

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

Hamid_RT31-Jul-07 19:50

Hamid_RT

31-Jul-07 19:50

You can use of ShowWindow but Can you say how many controls you have on the forum?

WhiteSky

A question about lib files.

mt_samiei22-Jul-07 3:41

mt_samiei

22-Jul-07 3:41

Dear all

I add one library file (atapid.lib)to my project and compile it. but I get following error
atapid.lib(tapireq.obj) : fatal error LNK1202:
"D:\...\Debug\vc60.pdb" is missing debugging information for referencing module Error executing link.exe.

How can I overcome to this problem.
Regards

Monhi

Re: A question about lib files.

Abhijeet Pathak22-Jul-07 4:33

Abhijeet Pathak

22-Jul-07 4:33

Try rebuilding the entire application. i.e. Make a Full Recompile.
vc60.pdb is the 'Program Database' file and will be recreated when you will compile the app.

Transfer a File through Socket with CArchive

glemaire22-Jul-07 3:02

glemaire

22-Jul-07 3:02

I am trying to understand how it is possible to transfer a binary file (CFile) through an open CSocket connection that uses CArchive/CSocketFile. Bellow is a sample of my actual code. The socket transfer is working because before transfering the file itself, I am serializing other objects. They are correctly received. But the CFile.serialize() method leads to the reception of an empty file.

Server part :

m_pFile = new CSocketFile(this);
m_pArchiveIn = new CArchive(m_pFile,CArchive::load);
m_pArchiveOut = new CArchive(m_pFile,CArchive::store);
...
CString strFileName = "C:\Toto.exe";
CFile sourceFile;
sourceFile.Open( strFileName, CFile::modeRead | CFile::typeBinary, &fe );
sourceFile.Serialize(*(m_pArchiveOut));
m_pSocket->m_pArchiveOut->Flush();

Client part :

m_pFile = new CSocketFile(this);
m_pArchiveIn = new CArchive(m_pFile,CArchive::load);
m_pArchiveOut = new CArchive(m_pFile,CArchive::store);
...
CString strFileName = "C:\Toto.exe";
CFile destFile;
destFile.Open( strFileName, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary, &fe );
destFile.Serialize(*(m_pArchiveIn));

Any help would be appreciate. Thanks.

Guillaume.

Re: Transfer a File through Socket with CArchive

Mark Salsbery22-Jul-07 8:19

Re: Transfer a File through Socket with CArchive

22-Jul-07 8:19

It looks to me (and I could very well be wrong) that you're just serializing a CFile object,
not the contents of the file.

I would think you need to read chunks of bytes from the file and write them to the archive object
instead (read bytes from the archive and write to a file on the receiving end).

Mark

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

glemaire22-Jul-07 22:21

glemaire

22-Jul-07 22:21

Hi Mark

Thanks for your answer.
This anyway sounds strange for me : when I am serializing an object like a CString or a CObList (using the .serialize method), it sends the content of the object. My first thought was that it should be the same for a CFile. What would be the goal of having a CFile object without content ? Strange ...

I will do it myself chunking the file or using the TransferFile API.

Thanks again.

Guillaume.

Re: Transfer a File through Socket with CArchive

Mark Salsbery23-Jul-07 5:14

WinInet + "POST" request - how to make progress bar for uploading file?

23-Jul-07 5:14

glemaire wrote:
What would be the goal of having a CFile object without content ?

CFile is just a C++ wrapper around a file handle and provides methods for accessing the file
using the handle. Similar to the way a CWnd wraps an HWND and provides methods to access a window
through that HWND. The actual window data represented by the handle is in the system, not in your
CWnd object.

Hope that makes sense Smile | :)

Mark

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

chox_nox22-Jul-07 0:17

chox_nox

22-Jul-07 0:17

Hi,

I'm using WinInet APIs in async mode to upload files to server using HTTP protocol and "POST" request. As a matter of fact, I'm trying to simulate HTML form (multipart data) submit button.

I can successfully send file, but I have problem with making progress bar while uploading.
Here is code I'm using for sending:

while (dwReadLength != 0)
{
    DWORD dwBytesSent = 0;
dwReadLength = fileLocal.Read(pBuffer, dwChunkLength);

if (dwReadLength != 0)
{
    if (!InternetWriteFile(hInternetFile, pBuffer, dwReadLength, &dwBytesWritten))
        {
        if (::GetLastError() != ERROR_IO_PENDING)
    {
        strError.Format("CFileHostingHttpUpload::UploadFile::InternetWriteFile(2) = %d",
                    ::GetLastError());
        return FALSE;
    }
    WaitForSingleObject(hAsyncOp, INFINITE);
    }
        dwTotalRead+=dwBytesWritten;

        pbUpload->SetPos(((double)dwTotalRead/dwTotalRequestLength)*100);
}
}

The problem is that my progress bar gets fully "progressed" in about 1-2 seconds, but file uploading is far slower (25kb/s upload speed). When I track transfer with net sniffer tool I can see that it takes about 10 seconds to upload 256 kb file, but progress bar gets fill almost instantly. I've tried about 6-7 different upload "loops" but all of them are giving almost same result.

InternetStatusCallback gives me this:

<br />
11:49:19 - Connected to server.<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 186 bytes<br />
11:49:19 - Request complete.<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 86 bytes<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 4096 bytes<br />
...<br />
... (a lot of same status until the end of upload, no need to paste them all :))<br />
...<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 4096 bytes<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 4096 bytes<br />
11:49:19 - Request complete.<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 802 bytes<br />
11:49:19 - Sending request ...<br />
11:49:19 - Request sent: 16 bytes<br />
11:49:19 - Receiving response ...<br />
11:49:29 - Response received: 1024 bytes<br />
11:49:29 - <br />
11:49:29 - Request complete.<br />

Does anybody have any kind of solution?

Best Regards and have a nice day!

moving a mfc app into a dll

DevMentor.org21-Jul-07 23:11

DevMentor.org

21-Jul-07 23:11

I am trying to figure out how I can best move an existing mfc dialog app into a dll and then be able to launch it from a console based application when needed.

I understand the basics of dll importing / exporting and how to create and use a dll

I just want to know how do I get the app now insider a dll to initialize and show itself? basically the mfc is an observer type object and once created and made visible I can grab it's interface and start providing it data to output in the window.

Yours Truly, The One and Only!

#realJSOP22-Jul-07 0:16

#realJSOP

22-Jul-07 0:16

Just write a console app to launch your existing app. There's no need to put it into a DLL.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

DevMentor.org22-Jul-07 8:32

DevMentor.org

22-Jul-07 8:32

Not going to work in my case.

This is going to be a part of a 3rd party tool I am working on, I rather that other developers link to the dll and be able to use it without any gui or mfc knowledge.

Yours Truly, The One and Only!

Mark Salsbery22-Jul-07 9:15

22-Jul-07 9:15

This may help - Kinds of DLLs[^]

Particularly the sections related to regular DLLs linked with MFC.

Mark

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

DevMentor.org22-Jul-07 9:35

DevMentor.org

22-Jul-07 9:35

Thanks Mark, Big Grin | :-D

I already know about DLLs... I am just trying to contain all the MFC GUI logic inside a dll and then have a simple way to evoke the MFC Dialog based app I created with the Wizard. I would also like to be able to call this GUI from a console based app provided all the relevant mfc / windows definitions are included.

I know it's possible after all you can throw up a message box from a console app Big Grin | :-D

Yours Truly, The One and Only!

Mark Salsbery22-Jul-07 9:39