Re: How to let user choose a directory? - C / C++ / MFC Discussion Boards

Re: Where is the root directory ?

Ryan Binns24-Jun-03 23:58

Ryan Binns

24-Jun-03 23:58

Try GetWindowsDirectory() Smile | :)

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: Where is the root directory ?

rohit.dhamija25-Jun-03 1:48

rohit.dhamija

25-Jun-03 1:48

Thanks got it!

How to let user choose a directory?

Raphael Kindt24-Jun-03 23:29

Raphael Kindt

24-Jun-03 23:29

Hi world,

I want a simple dialog box (like CFileDialog) who let the user choose only a directory (not a file)...
Can somebody give me a simple example which does that?

Thanks in advance...

Hello World!!! Smile | :)

from Raphaël

Re: How to let user choose a directory?

Joan M24-Jun-03 23:35

Joan M

24-Jun-03 23:35

There are lots of samples here in CP...

http://www.codeproject.com/dialog/#Windows%20Common%20dialogs[^]

for example...

Hope this helps.

Re: How to let user choose a directory?

Raphael Kindt24-Jun-03 23:47

Raphael Kindt

24-Jun-03 23:47

I would have to look in Code Project first, sorry...

Hello World!!! Smile | :)

from Raphaël

Re: How to let user choose a directory?

Joan M25-Jun-03 0:01

Joan M

25-Jun-03 0:01

Don't worry! Wink | ;)

Re: How to let user choose a directory?

David Crow25-Jun-03 3:05

David Crow

25-Jun-03 3:05

SHBrowseForFolder()

Re: How to let user choose a directory?

basementman25-Jun-03 4:32

basementman

25-Jun-03 4:32

The following sample browses for a directory:

void BrowseForDir()<br />
{<br />
  char caPathName[MAX_PATH];<br />
<br />
  caPathName[0] = 0;<br />
<br />
  GetDlgItemText(IDC_MYCTRL_TO_BACKFILL,caPathName,MAX_PATH);<br />
<br />
  BROWSEINFO sBI;<br />
  memset(&sBI,0,sizeof(BROWSEINFO));<br />
<br />
  sBI.hwndOwner = m_hWnd;<br />
  sBI.pidlRoot = NULL;<br />
  sBI.pszDisplayName = caPathName;<br />
  sBI.lpszTitle = "Select the folder that contains the desired files";<br />
  sBI.ulFlags = BIF_RETURNONLYFSDIRS;<br />
  sBI.lpfn = NULL;<br />
<br />
  LPITEMIDLIST pidl = SHBrowseForFolder(&sBI);<br />
  if (pidl)<br />
    {<br />
      SHGetPathFromIDList(pidl,caPathName);<br />
      SetDlgItemText(IDC_MYCTRL_TO_BACKFILL,caPathName);<br />
      GotoDlgCtrl(GetDlgItem(IDC_MYCTRL_TO_BACKFILL));<br />
    }<br />
}

onwards and upwards...

How to insert a row in FlexGrid?

Radha Nair24-Jun-03 22:57

Radha Nair

24-Jun-03 22:57

My application uses a Flexgrid. Iam using the first row as the header. I need to insert new rows (data rows) after the first row (as the second row). Every new row inserted must become the second row and the remaining rows should get pushed down. Resetting the number of rows works but it appends a row at the end of the grid. Is there any way to achieve this? Where can I get the complete documentation on Flexgrid?

thanks.

Re: How to insert a row in FlexGrid?

Toni7825-Jun-03 0:08

Toni78

25-Jun-03 0:08

void CMSHFlexGrid::AddItem(LPCTSTR Item, const VARIANT& Index) adds a new row. If you want to add a new row after the header then just call:
AddItem( Item, _variant_t((long)1) );
If you want the documentation for FlexGrid, go to Project->Add to project->Components and controls and then find the flexgrid control. Select it and then click More Info.

// Afterall, I realized that even my comment lines have bugs

Using printer device

Ahmed Galal24-Jun-03 22:54

Ahmed Galal

24-Jun-03 22:54

is there anyway or API that helps me printing the contents of an List view control ?? , i mean here with "Printing" is to use the printer device not pronting on the screen.
if anyone can support me with articles or code will be better.
i use MFC.

thanx for advance

stl set bug ?

Brian van der Beek24-Jun-03 21:35

Brian van der Beek

24-Jun-03 21:35

I have a stl set with pointers to objects. When I insert() a reference to one of these objects in the empty set I get an access violation in the while loop of the following code:

<br />
void _Dec()<br />
                        {if (_Color(_Ptr) == _Red<br />
                                && _Parent(_Parent(_Ptr)) == _Ptr)<br />
                                _Ptr = _Right(_Ptr);<br />
                        else if (_Left(_Ptr) != _Nil)<br />
                                _Ptr = _Max(_Left(_Ptr));<br />
                        else<br />
                                {_Nodeptr _P;<br />
                                while (_Ptr == _Left(_P = _Parent(_Ptr)))<br />
                                        _Ptr = _P;<br />
                                _Ptr = _P; }}<br />

When I change the set to a list an push_back() the same object I works fine. Is this an stl bug, or must I be doing something wrong?

Re: stl set bug ?

ankea17-Nov-15 0:16

ankea

17-Nov-15 0:16

hi, I have the same problem. how to solve this ?

vb constants in vc

mooze24-Jun-03 21:15

mooze

24-Jun-03 21:15

Where can I get the actual values of the vb constants defined for an activex control which I include in a vc project (for instance vtChChartType2dXY for mschart) ?
Thanks

Race conditions

Toni7824-Jun-03 20:35

Toni78

24-Jun-03 20:35

Two days ago I had to send out an application. At the very last minute I was asked if I could add a splash screen to it and stupid me said yes. I had never done that before in my life. I tried to add a splash screen through Components and Controls but that works only for MDI or SDI. My application is dialog based. With only 20 minutes left (I couldn't go online and search codeproject) I decided to add my own splash screen. So inside OnInitDialog I have something like this:

CSplashDlg aSplashDlg( this );
aSplashDlg.DoModal()

Not being able to send a close message to CSplashDlg I just added a thread to CSplashDlg (a CDialog based class).

UINT SplashDelayThread( LPVOID pParam )
{
	Sleep( 5000 );
	::PostMessage( (HWND)pParam, WM_CLOSE, 0, 0 );
	return 0;
}

int CSplashWnd::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CDialog::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	AfxBeginThread( SplashDelayThread, this->m_hWnd,
                        THREAD_PRIORITY_NORMAL );

	return 0;
}

Now I am afraid that this might cause race conditions. For example what if the thread is activated and then it returns before the Splash dialog is created. 5 seconds is a long time but should I be worried? I mean you never know.

// Afterall, I realized that even my comment lines have bugs

COM DLL registration problem

vikramj24-Jun-03 20:15

vikramj

24-Jun-03 20:15

Hi Friends,

I am facing a problem in registering my COM DLL. We have build an Addin for a CAD application, which is a COM addin.

At some customer site, the addin dll is not getting registered. When we try to register using Regsvr32.exe, the exe returns an error code of 0x000000B6. The error description is "The operating system cannot run %1." when viwed with 'Error Lookup' tool.

I searched on google newsgroups and i found 1 article stating this error occurs when the ATL.dll on the target machine does not match with the ATL.dll with which the addin dll (the DLL being registered) was built. And we have to use the mindependency build to remove the ATL.dll dependency.

Accordingly i found my machine has ATL.dll with version 3.0xxx. where as the client's machine has ATL.dll 2.0xxx. I replaced the ATL.dll with the one that i had and tried to register. Still the problem persists.
Any clues on the above problem ? This is the most urgent and most important issue for us.

Thanks and Regards,
Vikram

Re: COM DLL registration problem

Kannan Kalyanaraman24-Jun-03 20:49

Kannan Kalyanaraman

24-Jun-03 20:49

Did you check whether you have all the dependencies for your COM dll on the client's machine.
Also, if possible try doing the registration through some installer (like installshield). I had a similar problem, when I had previous versions of the same COM Dll on the user's machine, it went fine through a installer.

Cheers,
Kannan

How to check who is currently logged on (Win2K/XP)

Hashim Saleem24-Jun-03 19:52

Hashim Saleem

24-Jun-03 19:52

Hi all,

I need to know is there any windows API call avialable to check who is presently logged in to the Windows 2000/NT/XP.

Thanks in advance.

Re: How to check who is currently logged on (Win2K/XP)

Ryan Binns24-Jun-03 20:04

Ryan Binns

24-Jun-03 20:04

GetUserName()

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

how to free library by dll self

gucy24-Jun-03 17:52

gucy

24-Jun-03 17:52

we use freelibrary() to free library in our client program.
but can we free the library by itself,if yes,how?

gucy

Re: how to free library by dll self

David Crow25-Jun-03 3:09

David Crow

25-Jun-03 3:09

gucy wrote:
free the library by itself

What exactly do you mean by this?

Application that handles 200 000+ Lines?

Steve The Plant24-Jun-03 16:01

Steve The Plant

24-Jun-03 16:01

Hi,

I need to build an application that loads a 200, 000 line
(or more) text file and lets the user interactively search
through it in memory, generating sub-lists of those 200, 000
lines with various search criteria.

I'm just wondering if it's wishful thinking to hope that
a standard list box can handle that many lines, and be
fast enough to traverse. If not, I wonder what other solutions or suggestions might there be.

Has anyone seen any applications that sound similar in
functionality to this?

All the string searching going on makes me think to use Perl,
but I don't know Perl at all. Also, I'm probably wrong, but
it's a command line only tool, isn't it?

Thanks for your time,
Shawn

Re: Application that handles 200 000+ Lines?

J. Dunlap24-Jun-03 16:14

J. Dunlap

24-Jun-03 16:14

You're best off using a virtual list box.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: Application that handles 200 000+ Lines?

Steve The Plant24-Jun-03 16:21

Steve The Plant

24-Jun-03 16:21

Could you explain the technique a little bit?

Shawn

Re: Application that handles 200 000+ Lines?

David Crow25-Jun-03 3:14

David Crow

25-Jun-03 3:14

Read these two MSDN articles:

Q97371
Q197690

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