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no , it wasn't a problem of driver , I installed another driver ... nothing , and I know that another person solved it .
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Can we write functions in a structure (struct) in C language. In C++, its possible. I have heard that we can write functions in C language using Function Pointers.. If anyone knows regarding this, please tell me.
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C++-classes are really just structs with their members being private by default.
C-functions are not nested within structs.
But a C-struct can easily hold a function pointer - to a fuction defined and declared elsewhere.
In fact, this is very similar to what the C++-compiler does behind your back: Convert all functions of a class to global ones taking a first 'this' parameter defining all that distinguishes the instance from others of the same class.
"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.
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can any1 show me a code snippet for this?
thanks
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote 
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Not sure what you mean but
to get the path of My Documents
use this registry key
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
Personal value has the complete path
Large cats have been scientifically proven to dream. Among the recurring themes are balls of yarn, mice, and half-blind overweight shackled oryx.
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thanks but in the other replies i saw a shell api function to do so...
thanks again
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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Its something like this:
std::string GetApplicationDataPath()
{
std::auto_ptr<char> path( new char[MAX_PATH]);
const HRESULT result = ::SHGetFolderPath( NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT, path.get());
if( result != S_OK)
return std::string();
else {
std::string s( path.get());
if( s.at( s.size()-1) != '\\')
s += '\\';
return s + _T("\\MyApp\\");
}
}
The CSIDL_APPDATA defines which of the plethora of system directories you want.
MSDN has them all.
"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.
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use:
SHGetSpecialFolderLocation()
Cheers
"Peace of mind through Technology"
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thanks!
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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wait! if i use CSIDL_MYDOCUMENTS then it returns E_INVALIDARG????
help??
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote 
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like this:
LPITEMIDLIST pidl;
HRESULT hr = SHGetSpecialFolderLocation(NULL,CSIDL_MYDOCUMENTS, &pidl);
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thanks,
can u show me snippet of what to do with the pidl later, i read i need to global malloc it then global free it in order to translate it to a string??
thanks
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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see here[^]
maybe it is some helpful to you
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actually this result as well hr=INVALID_ARG.......
help??
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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use CSIDL_PERSONAL
it seem that your problem is same with
here[^]
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10x!
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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Do you want to create a file in the My Documents folder?
This is from the VS 2005 help file:
szPath will contain the path to My Documents.
If you just want the path in szPath, and don't need to create a file, then don't send in the CSIDL_FLAG_CREATE flag.
TCHAR szPath[MAX_PATH];
if(SUCCEEDED(SHGetFolderPath(NULL,
CSIDL_PERSONAL|CSIDL_FLAG_CREATE,
NULL,
0,
szPath)))
{
PathAppend(szPath, TEXT("New Doc.txt"));
HANDLE hFile = CreateFile(szPath, ...);
}
----------
There go my people. I must find out where they are going so I can lead them.
- Alexander Ledru-Rollin
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10x!
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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hi all
for example if I have
CString sVal = _T("something");
how to assign sVal to a const char * variable ?
const char * pVal = ... ?
thanks
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big_denny_200 wrote: const char * pVal = ... ?
Try this
const char * pVal = (LPCTSTR)sVal;
Large cats have been scientifically proven to dream. Among the recurring themes are balls of yarn, mice, and half-blind overweight shackled oryx.
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CString str=_T("Hello");
const char *buffer;
buffer=(const char*)LocalAlloc(LPTR,20);
strcpy((char*)buffer,str);
LocalFree((HLOCAL)buffer);
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Monty2 wrote: Try this
const char * pVal = (LPCTSTR)sVal;
Can I add something?
Using this way we have to be carefull using pVal in WRITE mode: the pointer points to the local CString object!
Hope it helps.
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