C / C++ / MFC Discussion Boards

Michael Dunn5-Oct-01 8:32

5-Oct-01 8:32

Are you running Norton AntiVirus on 9x/Me by chance? There's a known bug with NAV 2000/2001 (maybe 2002, I haven't tried it yet) that'll lock VC when it either runs the help compiler or regsvr32. Disable Auto-Protect to work around this.

--Mike--
http://home.inreach.com/mdunn/
"Listen you footwarriors, can you hold down a bit with the firing? I've just got three impromptu weddings breaking out behind me!" -- Arthur Dent
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Re: Problems with Visual Studio

Steen Krogsgaard7-Oct-01 21:11

Steen Krogsgaard

7-Oct-01 21:11

Wow, thanks! Yes, I'm running NAV on Win95, with autoprotect on. I'll try to disable it and see if the problem goes away. BTW, VC doesn't really lock, it just never finishes the build (but the UI works fine).

Do you know if NAV causes any problems with Adaptec CD Creator as well? Creator won't recognize my CD writer (although Direct CD works fine!)

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Re: Problems with Visual Studio

Steen Krogsgaard8-Oct-01 23:32

Steen Krogsgaard

8-Oct-01 23:32

Hi,

disabling Auto-Protect certainly did the trick, thanks again. However, the compilation froze (with Auto-Protect on) either during the creation of the browse database or during invocation of a post-linking step (a file copy). So this bug is not just when running help compiler or regsvr32.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Re: Problems with Visual Studio

Michael Dunn9-Oct-01 19:20

Michael Dunn

9-Oct-01 19:20

Yeah, the IDE will hang when launching any external program. Regsvr32 is just what most people get the hang with since that's used so often.
As for your CD writer, I don't know. Check Symantec's knowledge base and Adaptec's site.

--Mike--
http://home.inreach.com/mdunn/
"The Earth is doomed." -- Rupert Giles
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Re: Problems with Visual Studio

Steen Krogsgaard10-Oct-01 1:15

Steen Krogsgaard

10-Oct-01 1:15

As for your CD writer, I don't know. Check Symantec's knowledge base and Adaptec's site.
Did that. Since the Adaptec sw came with the writer it's OEM and out of Adaptecs (actually it's Roxios) hands. I'll have to contact the writer producer (Samsung). But I'll upgrade my PC and install win98 instead one of these days, and I'll install NAV as the very last program. I'll check that everything works before NAV, and if anything breaks after NAV I'll fry their support.

thanks for your help

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

File Property

Maer7275-Oct-01 3:34

Maer727

5-Oct-01 3:34

How to get the file property dialog box?
Like "File-->Property" in IE and Word.

Thanks.

Maer

Re: File Property

Paolo Messina5-Oct-01 11:21

Paolo Messina

5-Oct-01 11:21

I'm not sure, but you may use ShellExecuteEx() with a special Verb.
I don't know which one though, you may have to do some research. Smile | :)

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

Re: File Property

Maer7276-Oct-01 18:06

Maer727

6-Oct-01 18:06

I use the following statement to show the property of a file. But it does not work.

ShellExecute(AfxGetApp()->GetMainWnd()->m_hWnd,"properties","c:\\autoexec.bat",NULL,NULL,SW_SHOWDEFAULT);

How to resolve the trouble?

Thanks.
Maer

Re: File Property

Paolo Messina6-Oct-01 23:36

Paolo Messina

6-Oct-01 23:36

Try with ShellExecuteEx and SEE_MASK_INVOKEIDLIST .
Just a guess, though, I never tried Smile | :)

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

Re: File Property

Maer7279-Oct-01 2:05

Maer727

9-Oct-01 2:05

I had tried the following codes, but it still does not work.

SHELLEXECUTEINFO info;
info.cbSize=sizeof(SHELLEXECUTEINFO);
info.lpFile="c:";
info.lpVerb="properties";
info.fMask=SEE_MASK_INVOKEIDLIST;
info.hwnd=this->m_hWnd;
ShellExecuteEx(&info);

Can you help?

Thanks again.

Re: File Property

Paolo Messina9-Oct-01 7:17

Paolo Messina

9-Oct-01 7:17

From PJ Naughter's CFileTreeCtrl class:

BOOL CTreeFileCtrl::ShowProperties(HTREEITEM hItem)
{
  BOOL bSuccess = FALSE;
  if (m_bAllowProperties && hItem)
  {
    //Show the "properties" for the selected file
    CString sFile = ItemToPath(hItem);
    SHELLEXECUTEINFO sei;
    ZeroMemory(&sei,sizeof(sei));
    sei.cbSize = sizeof(sei);
    sei.hwnd = AfxGetMainWnd()->GetSafeHwnd();
    sei.nShow = SW_SHOW;
    sei.lpFile = sFile.GetBuffer(sFile.GetLength());
    sei.lpVerb = _T("properties");
    sei.fMask  = SEE_MASK_INVOKEIDLIST;
    bSuccess = ShellExecuteEx(&sei);
    sFile.ReleaseBuffer();
  }
  return bSuccess;
}

So you can blame him if that doesn't work Wink | ;)

Just replace ItemToPath() with your filename.

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

Re: File Property

Maer7279-Oct-01 20:15

Maer727

9-Oct-01 20:15

Hi Paolo

Your method works perfectly! It helps me a lot. : )

Thanks again.

Best regards.

Maer

Advance

5-Oct-01 3:33

How can make my window as "Always on top"?
I mean My Window is always on top of other applications, If other application is activated.
This type of thing happens in the Help also.

I hope you can understand. What my Question (I HOPE)
I know my english is bad.
Thanks in Advance - Smile | :)

Re: Advance

Chaos Lawful5-Oct-01 4:20

Chaos Lawful

5-Oct-01 4:20

You can create a windows use CreateWindowEx() function and use WS_EX_TOPMOST style. For example:

HWND hWnd;
hWnd=CreateWindowEx(
WS_EX_TOPMOST,
...,// class name
...,// window name
WS_OVERLAPPEDWINDOW,
...); Smile | :)

Law is meaningless without chaos.
Chaos without Law is equal to destruction.
Chaos and Law create our rich and colorful world.

Re: Advance

Michael Dunn5-Oct-01 8:34

Michael Dunn

5-Oct-01 8:34

See the VC forum FAQ.

--Mike--
http://home.inreach.com/mdunn/
"Listen you footwarriors, can you hold down a bit with the firing? I've just got three impromptu weddings breaking out behind me!" -- Arthur Dent
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Reading data from Ethernet port

5-Oct-01 3:28

I need some help ... actually just to be pointed in the right direction, since I haven't dealt with this before.

I have a device that sends data out an RS-232 serial port, but it also sends data to an Ethernet port. The serial port data is handled by a separate device, but now I want the "controller" PC to read the data from the Ethernet port. Both the data-sending device and the PC have been set up with IP addresses in the same domain, and other 3rd party software reads and displays the data, so I know the PC is connected properly. Only these 2 devices are connected, so there is no other network connectivity.

So, a few questions: Confused | :confused:

- What kind of functions do I use to read data from the Ethernet Port?
- Does the data come as a serial byte stream, or is it in packets? Do I have to do my own message parsing and header-byte syncing, and then extract message data of interest?
- How do I need to "open," or "initialize" the port?
- How does all this work?

CodeProject articles, a web site, the name of a couple of functions that I can track down in the documentation, etc, is all I'm looking for right now. I haven't had much luck so far in tracking down just what I need.

Thanks,
Dave

Re: Reading data from Ethernet port

Michael P Butler6-Oct-01 9:32

Michael P Butler

6-Oct-01 9:32

I think you need to look at Sockets. Try searching MSDN for Socket API.

Hope this helps,

Michael Smile | :)

OpenGL and black border

Kristian Nilssen5-Oct-01 0:52

Kristian Nilssen

5-Oct-01 0:52

When I stretch the OpenGL MFC window past a certain point, my OpenGL rendered scene gets a black border. The border tends to grow as I increase the client area of the window. The bug happens most of the time, not always. Any ideas?

Re: OpenGL and black border

5-Oct-01 2:44

This is happaned only if you use combination of MS software render and Windows 2000. This can be fixed with some tricky changes of Windows's size.

Converting back from CWnd::Message to SendMessage

James Spibey4-Oct-01 23:56

James Spibey

4-Oct-01 23:56

Can anyone give me some pointers on how I would send the data I receive in a CWnd Overloaded function to another window using SendMessage.

For example

void CMyWnd::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
        CWnd::OnKeyUp(nChar, nRepCnt, nFlags);
	
        ::SendMessage(m_hWndTarget, WM_KEYUP, ...)
}

How is this done

James Spibey

Re: Converting back from CWnd::Message to SendMessage

Christian Graus5-Oct-01 0:12

Christian Graus

5-Oct-01 0:12

It depends on the message. In this case WM_KEYUP looks like this:

LRESULT CALLBACK WindowProc(
HWND hwnd, // handle to window
UINT uMsg, // WM_KEYUP
WPARAM wParam, // virtual-key code
LPARAM lParam // key data
);

So you would send it as ::SendMessage(m_hWndTarget, WM_KEYUP, (WPARAM)nChar, (LPARAM) nRepCnt | nFlags);

I *think* that is right, basically you need to make sure you send on the data in the format expected by the message, the info you want will always have come into the message handler at the top.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: Converting back from CWnd::Message to SendMessage

Jon Hulatt5-Oct-01 0:13

Jon Hulatt

5-Oct-01 0:13

void CMyWnd::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
{
        CWnd::OnKeyUp(nChar, nRepCnt, nFlags);
        ::SendMessage(m_hWndTarget, WM_KEYUP, (WPARAM) nChar, (LPARAM) ((nFlags * 256) + 1))
}

the lparam for this messages consists on nFlags in bits 31-16, and repeat count in bits 15-0. But the repeat count it always 1 in this message.

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: Converting back from CWnd::Message to SendMessage

Christian Graus5-Oct-01 0:28

Christian Graus

5-Oct-01 0:28

Jon is right and I am wrong - I didn't look at the MSDN properly when I wrote my answer.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: Converting back from CWnd::Message to SendMessage

James Spibey6-Oct-01 11:24

James Spibey

6-Oct-01 11:24

Actually, I have found an easier way. All I have to do is override the DefWindowProc for my window and filter out the messages which I wish to forward:-

LRESULT CMyWnd::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
	// Pass key presses to other window
	switch(message)	
	{
	case WM_KEYUP:
	case WM_KEYDOWN:
	case WM_SYSKEYUP:
	case WM_SYSKEYDOWN:
		::SendMessage(m_hWndTarget, message, wParam, lParam);
		break;
	}
	return CWnd::DefWindowProc(message, wParam, lParam);
}

James Spibey

Re: Converting back from CWnd::Message to SendMessage

Paolo Messina5-Oct-01 11:26

Paolo Messina

5-Oct-01 11:26

Maybe you can use CWnd::GetCurrentMessage() and use the returned MSG structure.

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.