Re: Hi all - C / C++ / MFC Discussion Boards

Re: 0xc0000142 error in Vista

Paresh Chitte16-May-07 23:58

Paresh Chitte

16-May-07 23:58

Which dll is needed ? Please check the dependency with dependency walker ?

Regards,

Paresh.

Re: 0xc0000142 error in Vista

rp_suman17-Jun-07 3:00

rp_suman

17-Jun-07 3:00

Hi Paresh,
Thank you very much for great help.
I got the problem. If I remove d3d9.dll from application folder in Vista, application is starting without problem.
Best Regards,
Suman

need some help on the friend functions

nethp102016-May-07 22:53

nethp1020

16-May-07 22:53

I am trying to overload the ">>" and "<<" with two friend functions, and I am receiving 14 errors during the compile time. Anybody could help me out? thanks!!!

Here are the error messages I've received:
============================================================================

--------------------Configuration: IntegerSet - Win32 Debug--------------------<br />
Compiling...<br />
IntegerSet.cpp<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2143: syntax error : missing ';' before '&'<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2433: 'istream' : 'friend' not permitted on data declarations<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2501: 'istream' : missing storage-class or type specifiers<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2244: 'istream' : unable to resolve function overload<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2061: syntax error : identifier 'istream'<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2501: '>>' : missing storage-class or type specifiers<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(19) : error C2805: binary 'operator >>' has too few parameters<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2143: syntax error : missing ';' before '&'<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2433: 'ostream' : 'friend' not permitted on data declarations<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2501: 'ostream' : missing storage-class or type specifiers<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2244: 'ostream' : unable to resolve function overload<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2061: syntax error : identifier 'ostream'<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2501: '<<' : missing storage-class or type specifiers<br />
c:\documents and settings\administrator\Desktop\project4_c++\integerset.h(20) : error C2805: binary 'operator <<' has too few parameters<br />
Error executing cl.exe.<br />
<br />
IntegerSet.exe - 14 error(s), 0 warning(s)

============================================================================

My header file:

#ifndef INTEGERSET_H<br />
#define INTEGERSET_H<br />
<br />
class IntegerSet<br />
{<br />
public:<br />
	int size;<br />
	int *arr;<br />
<br />
public:<br />
	IntegerSet();<br />
	IntegerSet(int m);<br />
	IntegerSet(int a[], int n);<br />
	IntegerSet operator+(IntegerSet s);<br />
	IntegerSet operator*(IntegerSet s);<br />
	IntegerSet operator-(IntegerSet s);<br />
	void insertElement(int k);<br />
	void removeElement(int m);<br />
	friend istream &operator>>(istream &is, const IntegerSet &s);<br />
	friend ostream &operator<<(ostream &os, const IntegerSet &s);<br />
	bool operator==(IntegerSet s);<br />
	bool operator!=(IntegerSet s);<br />
	bool operator>=(IntegerSet s);<br />
	bool operator<=(IntegerSet s);<br />
	bool isValid(int k);<br />
	~IntegerSet()<br />
	{<br />
		delete [] arr;<br />
	}<br />
};<br />
<br />
#endif

============================================================================

My two functions from the Implementation file.

istream &operator >>(istream &is, const IntegerSet &s)<br />
{<br />
	int value;<br />
	is >> value;<br />
	return is;<br />
}<br />
<br />
ostream &operator <<(ostream &os, const IntegerSet &s)<br />
{<br />
	os << "{ ";<br />
	for (int i = 0; i < 256; i++)<br />
		os << s.arr[i] << " ";<br />
	os << "}";<br />
	return os;<br />
}

Re: need some help on the friend functions

Hans Dietrich17-May-07 0:10

Hans Dietrich

17-May-07 0:10

istream & IntegerSet::operator >>(istream &is, const IntegerSet &s)
{
    ...
}

ostream & IntegerSet::operator <<(ostream &os, const IntegerSet &s)
{
    ...
}

Please use "pre", not "code" for code listings.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: need some help on the friend functions

nethp102017-May-07 14:45

nethp1020

17-May-07 14:45

Thank you very much, but friend shouldn't be a member function, isn't it?

Hi all

josip cagalj16-May-07 22:50

josip cagalj

16-May-07 22:50

i have a question to ask!
I,m having some trouble with Ftp error code, After i catch error from 'SetCurrentDirectory()' (error code 12031- connection to the server was reset)
I try to display it (using my 'DisplayErrorString' function with below code in):

'FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwError,<br />
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), <br />
                achBuffer, 120, NULL) ;'

but I get nothing, empty string!
Enyone know what to do?
Thanx!

Re: Hi all

Paresh Chitte17-May-07 0:07

Paresh Chitte

17-May-07 0:07

josip cagalj wrote:
'FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwError,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
achBuffer, 120, NULL) ;'

I hope you have got the dwError from the API GetLastError.

You should call the GetLastError function immediately when a function's return value indicates that such a call will return useful data.

Regards,

Paresh.

Re: Hi all

josip cagalj17-May-07 0:32

josip cagalj

17-May-07 0:32

Jes I do. I Call GetLastError immediately

if (!theApp.m_pConn->SetCurrentDirectory(voxftpdir))<br />
{<br />
    CString str;<br />
    err=GetLastError();<br />
            ...<br />

Re: Hi all

Paresh Chitte17-May-07 0:41

Paresh Chitte

17-May-07 0:41

josip cagalj wrote:
CString str;
err=GetLastError();

Please change the order. Hope this will serve your purpose.

Regards,

Paresh.

Re: Hi all

josip cagalj17-May-07 0:59

josip cagalj

17-May-07 0:59

I think we misunderstand, so I'll recreate my question.
I switched off lan-cable on purposely to see how will my app react!
When I tried to get something from web server I used SetCurentDirectory() which trow error code 12031, but when i tried to get text explaining using:

'FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwError,MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),achBuffer, 120, NULL) ;'

which puts it in 'achBuffer' i've got nothing!!!!
Afterward i've searched the web and find out that 1203 error code stands for 'connection to the server was reset'.
My problem is how can I get it from a above solution (FormatMessage) and post it with AfxMessageBox???
Thanks!

Re: Hi all

Mark Salsbery17-May-07 5:53

Mark Salsbery

17-May-07 5:53

There's probably no message available in the system. If FormatMessage fails (returns 0) then
call GetLastError()...you'll probably get error code 317 ("The system cannot find message text
for message number ...").

You'll need to supply your own error strings.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: Hi all

Hamid_RT17-May-07 6:47

Hamid_RT

17-May-07 6:47

Whats the return value of FormatMessage?

WhiteSky

Last msg

josip cagalj17-May-07 22:02

josip cagalj

17-May-07 22:02

I've solved the problem, I just needed to load "WININET.DLL"

HMODULE m_hWininet = LoadLibrary(_T("WININET.DLL"));<br />

and than

FormatMessage (<br />
   FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_FROM_HMODULE,<br />
   m_hWininet,dwError,<br />
   MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), achBuffer, 120,<br />
   NULL) ;<br />

And that it's!
Thanks to all!

P.S.
Don't forget to free library after!

Problem with code on Reading Files :(

Immunity1816-May-07 22:32

Immunity18

16-May-07 22:32

Hi i am working on a project where it is reading files (names are stored on a CArray[CS ,CS] FArray ). CS = CString and [ = < ] = >

While it Reading a file :

In each Buffer line it search if there is any word (stored in a CArray[CS,CS] WArray) int ntimes is the number that each WArray element found in Buffer Line

and the end each ntimes is stored in RArray.

Code is working perfect till ifstream TextFile
when i am adding the next code lines the .exe i build is freezing and
become (Not Responding)

if someone could see the reading code for some faults i would greatful

CArray<cstring ,="" cstring=""> RArray;
CString FilePathName;
CString LineRead ;
int ntimes=0;
const int sz =100;
char buf[sz];

m_FolderName = "C:\\test123\\";
for ( int p = 0 ; p < FArray.GetSize() ; p++)
{
FilePathName = m_FolderName + FArray.GetAt(p);
m_List.AddString(FilePathName);
ifstream FileText(FilePathName);

while(FileText.get(buf,sz))
{

FileText.get();
LineRead = (LPCSTR) buf;

for ( int m = 0 ; m < WArray.GetSize() ; m++)
{
int nStart=1;
while ( LineRead.Find(WArray.GetAt(m),nStart)!=0)
{
ntimes = ntimes +1;
nStart= LineRead.Find(WArray.GetAt(m) , nStart);
}

RArray.Add(""+ntimes);

}
}

FileText.close();
return;

}

Re: Problem with code on Reading Files :(

Hamid_RT16-May-07 22:37

Hamid_RT

16-May-07 22:37

Same question!

WhiteSky

Re: Problem with code on Reading Files :(

Immunity1816-May-07 22:41

Immunity18

16-May-07 22:41

slow scrollbar

Aint16-May-07 22:13

Aint

16-May-07 22:13

hi.
I have created scrollbar in the application but the scrollbar move very slow when I clicked the two ends of the scrollbar. what should I do?

Re: slow scrollbar

Mark Salsbery17-May-07 5:56

Mark Salsbery

17-May-07 5:56

ReturnRain wrote:
what should I do?

That depends on what you are doing in response to the WM_HSCROLL/WM_VSCROLL messages.
If you are doing a lengthy/slow operation then it's going to be slow.
Or maybe you need to scroll by a greater amount for each scrollbar unit scrolled.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: slow scrollbar

Nelek17-May-07 20:15

Nelek

17-May-07 20:15

Hi,

it can depends on your UpdateWindow () too. If you are redrawing a lot of things it can difficult other things. Just take a look if other things go slow, and try to make your code faster.

I had the same problem because I was bringing CObject derived classes and erasing them after the use. I solve my speed problem using pointers. I should not copy objects but accessing them directly.

Take a look on your code Smile | :)

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Images in CListCtrl

anilkrupakar16-May-07 21:58

anilkrupakar

16-May-07 21:58

How to add an image to a list ctrl. i want to add different icons for the column 1 for all the rows.

Anil Jillella

Re: Images in CListCtrl

CPallini16-May-07 22:12

CPallini

16-May-07 22:12

You have to use an Image List see here [^].
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Images in CListCtrl

Hamid_RT16-May-07 22:24

Hamid_RT

16-May-07 22:24