C / C++ / MFC

Re: Finding system drive of my system

22-Sep-08 22:14

See if Getting system information[^] helps.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Russell^'22-Sep-08 22:14

Re: Finding system drive of my system

22-Sep-08 22:14

Some of the information that you need can be taken using GetVolumeInformation

Russell

David Crow23-Sep-08 3:25

David Crow

23-Sep-08 3:25

VCProgrammer wrote:
I want to find all the drives and its information...

Check out GetLogicalDriveStrings() and GetDiskFreeSpace().

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

threads

Russell^'22-Sep-08 22:06

22-Sep-08 22:06

Is there any Macro that can be used to know if the function that is running is called from a worker-thread or the main program? It is needed to know without use any addictional static global variable or addictional parameter to the function.
thanks

Russell

Re: threads

Russell^'22-Sep-08 23:41

22-Sep-08 23:41

This looks the solution:

if( AfxGetMainWnd()==NULL ){
   // Thread specialization
}else{
   // Main program specialization
}

Any comment will be wellcome

Russell

Re: threads

ramana.g23-Sep-08 1:17

ramana.g

23-Sep-08 1:17

May be you can use something like this...

DWORD dwMainThreadId = 0;
DWORD dwProcessId = 0;
dwMainThreadId = GetWindowThreadProcessId( hMainWnd, &dwProcessId);
if( dwMainThreadId == GetCurrentThreadId() )
{
//Main Thread
}
else
{
//Thread specialization code
}

I have not tested this snippet.

Re: threads

Russell^'23-Sep-08 3:53

23-Sep-08 3:53

Yes! your solution looks work better then mine

inline BOOL IsThisAThread(){
	return GetCurrentThreadId()==GetWindowThreadProcessId(AfxGetMainWnd()->GetSafeHwnd(), NULL);
}

thanks

Russell

Re: threads [modified]

Mark Salsbery23-Sep-08 10:47

Mark Salsbery

23-Sep-08 10:47

*Edit* Never mind - that error doesn't occur Smile | :)

Mark

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

modified on Tuesday, September 23, 2008 4:56 PM

Re: threads [modified]

Russell^'24-Sep-08 21:46

Profile to Profile copy using MAPI

24-Sep-08 21:46

yes, you are right....but as you suggested it is better in this way, thanks

inline BOOL IsThisAThread(){
	CWnd* pMainWnd=AfxGetMainWnd();
	if(! pMainWnd) return TRUE;
	return GetCurrentThreadId()!=GetWindowThreadProcessId(pMainWnd->GetSafeHwnd(), NULL);
}

Russell

nagadravid22-Sep-08 21:53

nagadravid

22-Sep-08 21:53

Hi All,

I m new to MAPI, and m tryig to copy messages from one profile to another profile.

Created a dummy profile.
Configured a MSPST messages service and added a PST file to it.
And trying to copy data from My profile to this dummy profile.

I hav no idea how to do this?? IS there any way to do this??
Can I open two mapi sessions in a single thread?

Please help in this

Getting the size of file

AlProb22-Sep-08 21:45

AlProb

22-Sep-08 21:45

Hello!
I am trying to write a program which involves getting the size of a pictures and videos from their paths, I have looked on msdn and I found the function GetFileSizeEx but I need to put there a handle to the file and I don't know how to do that.
How can I create a handle to the file from it's path? unless you have a better idea how to get the size of the file?

Rajesh R Subramanian22-Sep-08 22:04

22-Sep-08 22:04

AlProb wrote:
unless you have a better idea how to get the size of the file?

May not be a "better" idea, but this is just another way to do it (Just found off a search):

TCHAR* sFile = _T("D:\\Rajesh\\Cheers.htm");
struct _stat buff;
_tstat(sFile, &buff);
cout<<"The size of your file is "<<buff.st_size<<" Bytes"<<endl;

Please note that _tstat returns an int, so if the file size is larger than the maximum value of an int, then this method won't work right!

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Rajesh R Subramanian22-Sep-08 22:32

22-Sep-08 22:32

You may also want to try CFile::GetStatus[^], which stores the file size in an ULONGLONG (64 bit unsigned integer), which is a relief. Smile | :)

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

AlProb22-Sep-08 23:03

AlProb

22-Sep-08 23:03

thanks for your help, it realy is a relief since the size of the videos can be in GB, hope the ULONGLONG will hold it

akirilov22-Sep-08 23:18

akirilov

22-Sep-08 23:18

with WinAPI it is very easy (and it is probably the fastest way):

LARGE_INTEGER n;
HANDLE hFile = CreateFile(FileName, GENERIC_READ,...OPEN_EXISTING...);
GetFileSizeEx(hFile, n);
CloseHandle(hFile);

just check MSDN for all options of CreateFile

Michael Schubert22-Sep-08 23:41

22-Sep-08 23:41

Other option:

__int64 GetSize(CString cs_file)
{
	WIN32_FIND_DATA fd; 
	__int64 iSize = -1;

	HANDLE hFind = FindFirstFile((LPCTSTR)cs_file, &fd); 
	if (hFind != INVALID_HANDLE_VALUE)
		iSize =	(((__int64)fd.nFileSizeHigh) << 32) + fd.nFileSizeLow;

	FindClose(hFind); 

	return iSize;
}

Rajesh R Subramanian23-Sep-08 0:03

23-Sep-08 0:03

Very nice. A small suggestion that might double the ability of the method: The return type may be unsigned __int64 rather than being signed (the default size can be 0) Smile | :)

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Michael Schubert23-Sep-08 0:32

23-Sep-08 0:32

I know, I know. I used the signed __int64 because I convert the return value somewhere to double and VC6 doesn't support the conversion from unsigned __int64 to double ;-(

Rajesh R Subramanian23-Sep-08 1:15

23-Sep-08 1:15

This works on VC6:

typedef unsigned __int64 UI64;
UI64 GetSize(CString cs_file)
{
	WIN32_FIND_DATA fd; 
	UI64 iSize = 0;

	HANDLE hFind = FindFirstFile((LPCTSTR)cs_file, &fd); 
	if (hFind != INVALID_HANDLE_VALUE)
		iSize =	(((UI64)fd.nFileSizeHigh) << 32) + fd.nFileSizeLow;

	FindClose(hFind); 

	return iSize;
}

void CCPDlgDlg::OnButton3() 
{
	UI64 isize = GetSize(_T("D:\\Rajesh\\Cheers.htm"));
}

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Michael Schubert23-Sep-08 1:22

23-Sep-08 1:22

Did you try to cast the return value to double?

Rajesh R Subramanian23-Sep-08 1:26

23-Sep-08 1:26

If you hear a loud noise, it is me banging head against the table. Cry | :((

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Michael Schubert23-Sep-08 1:28