How to tell if a removable drive is a CD or USB - C / C++ / MFC Discussion Boards

Re: Vista issues

Ravi Bhavnani31-Jan-07 2:54

Ravi Bhavnani

31-Jan-07 2:54

More correctly, the problem was caused by SxS, which was introduced in XP.

/ravi

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Re: Vista issues

Anilkumar K V30-Jan-07 21:36

Anilkumar K V

30-Jan-07 21:36

Check this helps you or http://support.microsoft.com/kb/316625

deleting all files from a folder, but one

snoopy_32130-Jan-07 3:15

snoopy_321

30-Jan-07 3:15

Hello
Please help me, I want to make an application that deletes all files
from the folder in wich my application is, but one wich's name
I give in the command line.
Are there some functions in Visual C++ for getting all files in a folder?

Thanks

snoopy

Re: deleting all files from a folder, but one

David Crow30-Jan-07 3:18

David Crow

30-Jan-07 3:18

snoopy_321 wrote:
Are there some functions in Visual C++ for getting all files in a folder?

See the FindFirstFile()/FindNextFile() pair.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: deleting all files from a folder, but one

Laxman Auti30-Jan-07 20:25

Laxman Auti

30-Jan-07 20:25

DavidCrow wrote:
See the FindFirstFile()/FindNextFile() pair.

Don't forget to use FindClose() after you done with searching. I had a bad expeirence of forgetting of same. which may causes crashes and locking file system resources...
Smile | :)

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: deleting all files from a folder, but one

snoopy_32130-Jan-07 23:48

snoopy_321

30-Jan-07 23:48

Thanks, I think they will work.
bye...

Re: deleting all files from a folder, but one

Hamid_RT30-Jan-07 7:32

Hamid_RT

30-Jan-07 7:32

In additional FindFirstFile()/FindNextFile() use of SHFileOperation or DeleteFile

WhiteSky

How to tell if a removable drive is a CD or USB

tieng8630-Jan-07 2:49

tieng86

30-Jan-07 2:49

In code how can we distinguish a removable drive whether it is a CD/DVD or an USB removable drive (pen drive, flash memory reader/writer)? I used the SDK function GetLogicalDrive() to collect the drive letter and DeviceIoControl() to check if the drive is removable but I don't know how to tell if the drive is a CD/DVD drive or a pen drive asumming that I have both unformatted CD in the CD drive and pen drive in the USB port.

My objective is to format the pen drive from code. At the moment, I rely on the user to select the correct drive. But if he choose the CD drive by mistake, an attemp to format the CD for FAT system would crash the program or put the format call into a loop forever (I spawn to call format.com to format the drive).

Any help would be greatly appreciated. Thanks in advance

Re: How to tell if a removable drive is a CD or USB

Blake Miller30-Jan-07 4:48

Blake Miller

30-Jan-07 4:48

Try GetDriveType to see if that helps make a distinction.

The GetDriveType function determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive.

Return Values
The return value specifies the type of drive. It can be one of the following values.

Value Meaning
DRIVE_UNKNOWN The drive type cannot be determined.
DRIVE_NO_ROOT_DIR The root path is invalid, for example, no volume is mounted at the path.
DRIVE_REMOVABLE The drive is a type that has removable media, for example, a floppy drive or removable hard disk.
DRIVE_FIXED The drive is a type that cannot be removed, for example, a fixed hard drive.
DRIVE_REMOTE The drive is a remote (network) drive.
DRIVE_CDROM The drive is a CD-ROM drive.
DRIVE_RAMDISK The drive is a RAM disk.

Maybe you get different value for CD-ROM and the Pen Drive ?

Re: How to tell if a removable drive is a CD or USB

tieng8630-Jan-07 8:00

tieng86

30-Jan-07 8:00

Thanks Blake. My problem is on the labtop, the CD drive is removable and GetDriveType() would return all removable drive "DRIVE_REMOVABLE"

Re: How to tell if a removable drive is a CD or USB

James R. Twine30-Jan-07 7:46

James R. Twine

30-Jan-07 7:46

If you have code that goes into an infinite loop or crashes, you need to first fix that code! Smile | :)

   Have you looked at the SHFormatDrive(...) function? You can use it to format a drive (after you have determined that you should be formatting it).

   You did not mention if you were getting user permission or not, so I would think this is a bad idea. You would have to put some extra code in there to make sure you are not formatting a volume that is in use, and that you really have the one you want. What if the user had multiple storage devices plugged in at once? Which one would you be formatting...?

   This sounds like a very dangerous thing to do without first having the user confirm the format action. You could find yourself dealing with a lawsuit over lost data.

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

Re: How to tell if a removable drive is a CD or USB

tieng8630-Jan-07 8:21

tieng86

30-Jan-07 8:21

Thanks James. I thought the infinite loop was because the spawn to format.com never return when a removable CD drive was selected. I can prevent this by checking the media type before formatting. That's what prompted this question.

Yes, SHFormatDrive would do the same job.

I do prompt warning to the user before format the media. Your suggestion to check for user permission is a good idea as the extra precaution. I didn't think about it. Thanks

MFC Sockets

Member 253245430-Jan-07 1:19

Member 2532454

30-Jan-07 1:19

Please anyone can send a sample application using CAsyncSocket for communicating two clients which are in different ports. Thanks.

Regards,
Vijaya Smile | :)

Re: MFC Sockets

Nibu babu thomas30-Jan-07 1:38

Nibu babu thomas

30-Jan-07 1:38

wrote:
Please anyone can send a sample application using CAsyncSocket for communicating two clients which are in different ports. Thanks.

This[^] will make a good read.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: MFC Sockets

Hamid_RT30-Jan-07 2:09

Hamid_RT

30-Jan-07 2:09

Hi you back to the codeproject Wink | ;)

WhiteSky

Re: MFC Sockets

Nibu babu thomas1-Feb-07 20:43

Nibu babu thomas

1-Feb-07 20:43

WhiteSky wrote:
Hi you back to the codeproject

Yes. I was always here. Didn't find the time to post replies or queries. Smile | :)

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: MFC Sockets

Hamid_RT2-Feb-07 4:09

Hamid_RT

2-Feb-07 4:09

Nibu babu thomas wrote:
I was always here

Welcome;)

WhiteSky

Re: MFC Sockets

Hamid_RT30-Jan-07 2:08

Hamid_RT

30-Jan-07 2:08

See Socket Programming with MFC (part 1) [^] did you search on the codeproject Wink | ;)

WhiteSky

How to Insert Object...

Shah Satish30-Jan-07 0:59

Shah Satish

30-Jan-07 0:59

Hi !!!

In my application,I have created one dialog box which showing preview of the symbol.Now i want to insert this symbol in my Application( Autocad).How can i insert this??

Ie if I will click OK button from Dialog box then symbol (preview)should be insert in the Autocad.??

Thanking you

Shah

Re: How to Insert Object...

Roger Stoltz30-Jan-07 1:15

Roger Stoltz

30-Jan-07 1:15

AutoCad[^]? Your application?

Shah Satish wrote:
How can i insert this?

Really hard to tell.
I assume that the preview is not the actual object that is to be inserted, but rather a small bitmap or similar just to show the user how it looks.
You have to describe the "symbol". What is it? An OLE object, picture or what?

You have to describe the target as well.
What kind of application is it? What does it mean to "insert" a "symbol"?

"It's supposed to be hard, otherwise anybody could do it!" - selfquote

Re: How to Insert Object...

Shah Satish30-Jan-07 1:20

Shah Satish

30-Jan-07 1:20

Symol is from my file..Like C:\\Symbol\\Exchangers\\Exchanger_1_i.dwg

(here Exchanger_1_i.dwg is the symbol and its Autocad drawing)

This is the preview of the dialog box.

Re: How to Insert Object...

Roger Stoltz30-Jan-07 1:44

Roger Stoltz

30-Jan-07 1:44

Ok... This is how I understood you so far:
It is the actual commercial CAD application AutoCad and the "symbol" you want to insert is an AutoCad drawing.
So the question is really about "how do I insert an AutoCad symbol in an AutoCad drawing"?
Man, you really picked the wrong forum for this question... Try AutoCad support. Wink | ;)

Actually I don't think this is the case, but if I only read the things you're writing, that would be the only conclusion.
The questions in my previous post was meant to narrow the problem down and trying to understand what you're trying to do and how you're trying to do it. At least try to answer those questions if you still want some help.
Perhaps I cannot help you, I don't know that yet since you haven't described your problem in an understandable way, but there might be someone else that can. They would ask you similar questions however.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote

Re: How to Insert Object...

Shah Satish30-Jan-07 1:53

Shah Satish

30-Jan-07 1:53

Yeh..You got my question correctly..

See my code..

BOOL CDwgPvDLG::OnInitDialog()
{
	CDialog::OnInitDialog();

	
	//static bool isFirstRun = true;

 
	m_mytext.AddString(_T("Exchanger-Double end"));
        m_mytext.AddString(_T("Exchanger-Single end"));
        m_mytext.AddString(_T("Exchanger-Double end kettle"));
	m_mytext.AddString(_T("Exchanger-Single end kettle"));
	m_mytext.AddString(_T("Exchanger-Super"));
	m_mytext.AddString(_T("Exchanger-Process Flow"));
     

  if (str == _T("")) {

    // This is default value.

	   m_mytext.SetCurSel(0);

	   mydwg = _T("C:\\Symbol\\Exchangers\\Exchanger_1_i.dwg");

   }

   else{

	   m_mytext.SelectString(-1,str);
    }
 
    this->Invalidate(FALSE);
    
	return TRUE;
}

void CDwgPvDLG::OnPaint()

{
    // This is the class for preview of my drawing.	CDwgPreview ::ShowInDialog (mydwg,this,IDC_PVTYP);

	CPaintDC dc(this); 
	
	// device context for painting
	// TODO: Add your message handler code here
	// Do not call CDialog::OnPaint() for painting messages


}

void CDwgPvDLG::OnselectionchangeList()
{
	// TODO: Add your control notification handler code here
	
   int nEntry = m_mytext.GetCurSel();
   

   const IndexEntry *pEntry = m_pPermutedIndex->GetIndexTableEntry(nEntry);

   this->Invalidate(FALSE);

   
}

void CDwgPvDLG ::OnOK()
{
    CDialog::OnOK();

	
   m_mytext.GetText(m_mytext.GetCurSel(),str);

  //Here i have to add some code for inserting my symbol (.dwg).	

}

Shah

Re: How to Insert Object...

jhwurmbach30-Jan-07 2:40

jhwurmbach

30-Jan-07 2:40

In your code, you can probably call your class roughly like this:

CDwgPvDLG m_DwgPv;

if( IDOK == m_DwgPv.DoModal()) {
CString DWGItem = m_DwgPv.str;
//do whatever you want with the string the user did select in the dialog
}

Hope this helps?
Feel free to ask more.

"We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation."

-- Caius Petronius, Roman Consul, 66 A.D.

Re: How to Insert Object...

Shah Satish30-Jan-07 2:46

Shah Satish

30-Jan-07 2:46

Thanks for reply..But this is code for Calling dialog box..I have alreday call dialog box through command..only step is how to insert file ( for exmple this is my string n now i want to insert ..("C:\\Symbol\\Exchangers\\Exchanger_1_i.dwg")

every thing should be in On ok().. like..

void CDwgPvDLG ::OnOK()
{
    CDialog::OnOK();

	
   m_mytext.GetText(m_mytext.GetCurSel(),str);

   ads_point point;

   acedGetPoint(NULL,(_T("\nPick position : ")),point);

  // some code here to insert dwg.


}

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