C / C++ / MFC Discussion Boards

bryce9-Jun-04 19:57

9-Jun-04 19:57

Hi all
I understand that XP has thumbnail icons associated with file types an dthey're 48x48 pixels.
I was wondering what is the best way to extract say, the default shell thumbnail icon for an mp3 or other such file. I've been extracting the standard icons, but i was wondering how to extract the thumbnail icons
cheers
Bryce

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execute exe with a file associated

psychoriot9-Jun-04 19:55

psychoriot

9-Jun-04 19:55

hi,

i'm new here, can somebody help me, please..
heres the situation: i'm trying to run an exe file say test.exe, but this exe has still a file to open in order to fully function this exe. so what i wnat is to create another executable to launch the exe without manually opening the file associated to this exe.

Re: execute exe with a file associated

palbano9-Jun-04 19:59

palbano

9-Jun-04 19:59

Try ShellExecute()

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Non-unicode to Unicode

ilkertanli9-Jun-04 19:23

ilkertanli

9-Jun-04 19:23

I am having issues while writing a file renamer program using Visual c++. The problem is I can not replace non-unicode char to the unicode ones, for example i (not i) Visual c++ doesnt even let me to declare non-unicode chars.

If somebody has a clue or exprienced this before, please let me know.

Thnx...

Ilker TANLI
www.tanli.net

Re: Non-unicode to Unicode

Anonymous9-Jun-04 20:05

Anonymous

9-Jun-04 20:05

What do you mean "doesn't even let me declare non-unicode chars"? Why won't it? Is it giving you an error message of some sort? If so what's the error? What type of project are you trying to build? What version of Visual C++ are you using?

Without more information how do you expect anyone to help you?

Regards,
John

Implementation of HTML Help in MFC - Help please!!

Lakshmi Priya Musuvathy9-Jun-04 18:57

Lakshmi Priya Musuvathy

9-Jun-04 18:57

Hello,

I am new to this forum and new to HTML Help too. I have created a .chm file from the HTML Help Workshop. Now, i am trying to implement it in MFC program. I am stuck here with the context sensitive help where i have a "Help" button in a dialog box and should display the appropriate help provided for the dialog box. I can't understand how to create the context ids and how to pass between the HTML Help workshop file (.chm) and MFC. Any sample would be really helpful. Could anyone please help me to do this. Its quite urgent Frown | :(

Thanks in advance,
Regards
Priya

Re: Implementation of HTML Help in MFC - Help please!!

Cohen9-Jun-04 19:34

Cohen

9-Jun-04 19:34

Hi,

I don't know is it possible to fetch the context IDs programmatically from the CHM-file. I have always used hardcoded values (and the people who have made the help-files have ofcourse used those same values).

So, make a header file. e.g. HelpIDs.h where you define the IDs:

<br />
#define HID_MAINVIEW 100<br />
#define HID_SOMEOTHERVIEW 101<br />
#define HID_YETANOTHERVIEW 102<br />

Then include this file and just invoke html help with the correct id

<br />
HtmlHelp( GetDesktopWindow(), "helpfile.chm", HH_HELP_CONTEXT, HID_MAINVIEW) ;<br />

I have no experience from making the chm-files though..

Re: Implementation of HTML Help in MFC - Help please!!

Lakshmi Priya Musuvathy9-Jun-04 20:56

Lakshmi Priya Musuvathy

9-Jun-04 20:56

Thanks for the reply. There is a .hm file created by the project which has the following IDH_*

IDH_MAINFRAME 0x20080
IDH_HTML_HTYPE 0x20081
IDH_ABOUTBOX 0x20064

and as u told, i created the HelpID.h and defined the ids. While compiling it gives the following error.

error C2065: 'HID_MAINFRAME' : undeclared identifier

I looked into the article in http://www.codeguru.com/Cpp/W-P/help/html/print.php/c6513/ and he has done it without using OnHelp functions but could access any topics which i couldn't understand how.

Can anyone done such help projects with HTML Help? Or can anyone explain how the context ids are working?

Thanks
Priya

Re: Implementation of HTML Help in MFC - Help please!!

Cohen9-Jun-04 21:08

Cohen

9-Jun-04 21:08

Lakshmi Priya Musuvathy wrote:
error C2065: 'HID_MAINFRAME' : undeclared identifier

I'd quess that you simply don't include the header file correctly or that you have a typo somewhere. Should it be IDH_MAINFRAME for example?

Re: Implementation of HTML Help in MFC - Help please!!

Lakshmi Priya Musuvathy9-Jun-04 23:28

Lakshmi Priya Musuvathy

9-Jun-04 23:28

Hi,

Yes, it was IDH_MAINFRAME and i was not giving the correct header file. it worked now. Smile | :)

many thanks,
Regards
Priya

CMDIChildWnd size problem in DOC/View OCX

G.Richard9-Jun-04 18:41

G.Richard

9-Jun-04 18:41

I want to migrate a MFC doc/view application to an activex control. I create the CMainFrame(inherited from CMDIFrameWnd) object when the activeX control is Created. but when i open a document, access violation occured in user.dll and no source code. i found the error is from CMDIChildFrame::OnSize. the following is my code :

BOOL CMultiDocOCXCtrl::CreateMDIFrame()
{
if(m_pFrameWnd != NULL)
return FALSE;

CRect rc;
GetClientRect(&rc);
CMultiDocTemplate* pDocTemplate = new CMultiDocTemplate(
IDR_MAINFRAME,
RUNTIME_CLASS(CMyDocument),
RUNTIME_CLASS(CChildFrame),
RUNTIME_CLASS(CMyView));
AfxGetApp()->AddDocTemplate(pDocTemplate);
//
CString sClassName = AfxRegisterWndClass(CS_DBLCLKS);
CMainFrame * pFrame = new CMainFrame;
if(!pFrame->Create(sClassName, NULL, WS_CHILD|WS_VISIBLE, rc, this,
MAKEINTRESOURCE(IDR_MAINFRAME), 0, NULL))
{
delete pFrame;
return FALSE;
}
pFrame->ShowWindow(SW_SHOW);
pFrame->RecalcLayout();
//
m_pFrameWnd = pFrame;
//
AfxGetApp()->m_pMainWnd = m_pFrameWnd;
theApp.OnNewFile();
//
return TRUE;
}

Is anybody know how this problem occur?

c++ : my dream

Get message when excute a infinite loop

Anonymous9-Jun-04 18:14

Anonymous

9-Jun-04 18:14

hi, guys

Is there any functions in Visual C++ which have the same function like DoEvents in VB or doEvents in Java?

I have to make the program get response to a windows message when it is running in a infinite loop. Roll eyes | :rolleyes:

Is there any fuction can achieve this?

thank u very much in advance!

Re: Get message when excute a infinite loop

palbano9-Jun-04 19:28

palbano

9-Jun-04 19:28

Create a secondary (worker) thread and run the infinite loop in there.

Re: Get message when excute a infinite loop

nguyenvhn9-Jun-04 20:50

nguyenvhn

9-Jun-04 20:50

The following implemented VB DoEvents function:

<br />
BOOL DoEvents()<br />
{<br />
  static MSG msg;<br />
  while (::PeekMessage(&msg,NULL,0,0,PM_NOREMOVE)) {<br />
   if (!AfxGetApp()->PumpMessage()) {<br />
     ::PostQuitMessage(0);<br />
     return FALSE;<br />
   }	<br />
  }<br />
  return TRUE;<br />
}<br />

How to use the API function:WriteTapemark()?

blestrabbit9-Jun-04 18:12

blestrabbit

9-Jun-04 18:12

I am writing a software about tape backup.When u write the data into the tape, u can use the file mark to partiton the file.
But I don't understand the file mark.Who can tell me what the long file mark and short file mark are?How can I use them?

Re: How to use the API function:WriteTapemark()?

Roger Wright9-Jun-04 18:29

Roger Wright

9-Jun-04 18:29

From MSDN:

A short filemark contains a short erase gap that cannot be overwritten unless the write operation is performed from the beginning of the partition or from an earlier long filemark.

A long filemark contains a long erase gap that allows an application to position the tape at the beginning of the filemark and to overwrite the filemark and the erase gap.

Some people think of it as a six-pack; I consider it more of a support group.

Re: How to use the API function:WriteTapemark()?

blestrabbit9-Jun-04 19:29

blestrabbit

9-Jun-04 19:29

And I also read these information.I have uesd the file mark to realize the R/W code of the tape backup.I use the file mark to do it.Now I want to know the advantage of the long file mark and the short file mark.Then how to use them.I can use the file mark to realize the function.If I use the long file mark and the short file mark,what benefit can I get?Thanks!

Re: How to use the API function:WriteTapemark()?

Roger Wright9-Jun-04 22:15

Roger Wright

9-Jun-04 22:15

I'm thinking that the long filemark would enable you to append to a file without rewriting the entire partition, while the short one will require you to rewrite everything. This would be handy if the files you are backing up grow over time, but rarely change existing information. I know I'm reading a lot into a few descriptive lines here, since I've never worked with this function before, but it seems to me that the short filemark would be used for a full backup, and the long one for incremental backups.

Some people think of it as a six-pack; I consider it more of a support group.

CFtpConnection::SetCurrentDirectory() fails

Anonymous9-Jun-04 18:03

Anonymous

9-Jun-04 18:03

Hi,

I am using CFtpConnection class to deal with FTP server.
I am able to Get file from and Put file into the Root Directory.
Now, I want to access the sub-Directory under Root Directory for that I m using FtpConnection::SetCurrentDirectory() function but it always return FALSE.

I have tried out to use the CFtpConnection::Command() function , but that is not supported by my VC++ 6.0 version. Why this is so, Does any one know?

Below is my code snippet:

CInternetSession sess(_T("MyProgram/1.0"));
CFtpConnection* pConnect = NULL;
pConnect = sess.GetFtpConnection(_T("ftp.corsoft.com","UNIVERSE\UserName","Password",21));

BOOL ret = pConnect->SetCurrentDirectory("/kothi/cc/");

Please give me appropriate solution or Is there any other alternative to set the Current Directory.

Re: CFtpConnection::SetCurrentDirectory() fails

Roger Wright9-Jun-04 18:40

Roger Wright

9-Jun-04 18:40

A couple of thoughts occur to me, though I haven't tried using this function...

The documentation isn't clear whether the leading / in "/kothi/cc/" is required, or forbidden - it's possible that the current directory to which this would be appended may already include that character. Instead of using a relative path you might want to try using GetCurrentDirectory() first, then appending your target information to it and calling SetCurrentDirectory with the absolute path. Failing that, use GetLastError to find out what is going wrong. It may be that the target server doesn't have the correct permissions set on the subdirectories, too. Not all servers default to inherited permissions from parent directories.

Some people think of it as a six-pack; I consider it more of a support group.

Question about search syntax

KyleCM9-Jun-04 17:19

KyleCM

9-Jun-04 17:19

Help, anyone...I need to know the syntax to search for all files that start with any 10 characters and have a DLL extension. I know the *.dll but what do I put for the 10 characters?????????
Thanks in advance

Re: Question about search syntax

ocean20009-Jun-04 17:29

ocean2000

9-Jun-04 17:29

try ??????????*.dll

Re: Question about search syntax

KyleCM9-Jun-04 17:33

KyleCM

9-Jun-04 17:33

thank you very much....that was what I thought

file overwriting

AuroraX9-Jun-04 17:16

AuroraX

9-Jun-04 17:16

Hi there,

I wish to read a character from an input file one at a time, then process the character and finally write the processed character back to the place where it is initially read from (ie from the same input file, and same location in the file).....

how can i do that (preferably with not much too advance command as I am only a beginner )

Thanks very much... Big Grin | :-D

Re: file overwriting

palbano9-Jun-04 17:24

palbano

9-Jun-04 17:24

http://www.functionx.com/cpp/articles/filestreaming.htm[^]

"No matter where you go, there your are." - Buckaroo Banzai

-pete

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