C / C++ / MFC Discussion Boards

Franz Klein10-Apr-03 3:17

10-Apr-03 3:17

I have noticed while trying to compile the MySQL++ library and from the errors returned that:

the reverse_iterator class has changed. According to the Microsoft documentation there has been a change in the STL library.

I was wondering if this change is limited to the Microsoft version of the STL or is it a change in the ANSI C++ STL?

Smile | :)

Re: Changes in STL from VC6 to VC7

Alexandru Savescu10-Apr-03 4:17

Alexandru Savescu

10-Apr-03 4:17

FranzKlein wrote:
I was wondering if this change is limited to the Microsoft version of the STL or is it a change in the ANSI C++ STL?

I doubt there has been a change in ANSI C++ STL. Microsoft STL that ships with VC 7.0 is more compliant with the standard.

Best regards,
Alexandru Savescu

P.S. Interested in art? Visit this!

Re: Changes in STL from VC6 to VC7

Nemanja Trifunovic10-Apr-03 6:24

Nemanja Trifunovic

10-Apr-03 6:24

FranzKlein wrote:
the reverse_iterator class has changed

Yes, this one has hit me too some times ago. Microsoft made the change to make it ANSI compliant.

switch statement

Aaron Knox10-Apr-03 3:13

Aaron Knox

10-Apr-03 3:13

Hi all,
I'm still working on my switch statement program (from previous post)thanks to Joaquin my loop is working but for some reason my switch statements are not being activiated.
I've included a portion of my code, the switch statements continue for each letter a state begins with (d,f,g,h,i,k,etc)
Thanks,
Aaron

<br />
//this program is supposed to read state abbreviations from a file and output the corrosponding state to another file<br />
 <br />
#include <iostream><br />
#include <fstream><br />
<br />
using namespace std;<br />
<br />
int main()<br />
{<br />
  ifstream inAbrev("state abs.txt");               //opens the input file<br />
  ofstream outState("states with abvs.txt");       //opens the output file<br />
  char firstLetter,<br />
       secondLetter;<br />
<br />
  inAbrev >> firstLetter >> secondLetter;<br />
  cout << firstLetter <<  secondLetter << endl;    //just for me to see if anything is happening<br />
  <br />
  while(inAbrev)                                   //read til the end of the file<br />
      {<br />
	inAbrev >> firstLetter >> secondLetter;<br />
        cout << firstLetter <<  secondLetter << endl;<br />
<br />
  switch (firstLetter)<br />
          {<br />
	  case 'A' : switch (secondLetter)<br />
				 {<br />
					case 'L' : outState << inAbrev << " is " << "Alabama" << endl;<br />
                                                  cout << inAbrev << " is " << "Alabama" << endl;<br />
                                                  //here i'm trying to see if anything is happening	<br />
						break;<br />
					case 'K' : outState << inAbrev << " is " << "Alaska" << endl;<br />
						break;<br />
					case 'Z' : outState << inAbrev << " is " << "Arizona" << endl;<br />
						break;<br />
					case 'R' : outState << inAbrev << " is " << "Arkansas" << endl;<br />
						break;<br />
				 }<br />
	  case 'C' : switch (secondLetter)<br />
				 {<br />
					case 'A' : outState << inAbrev << " is " << "California" << endl;<br />
						break;<br />
					case 'O' : outState << inAbrev << " is " << "Colorado" << endl;<br />
						break;<br />
					case 'T' : outState << inAbrev << " is " << "Connecticut" << endl;<br />
						break;<br />
				 }<br />

arrrgh

Re: switch statement

Zdeslav Vojkovic10-Apr-03 3:28

Zdeslav Vojkovic

10-Apr-03 3:28

set the breakpoint on "switch (firstLetter)" line and check the value of firstLetter and secondLetter variables to see what values exactly are in them.

Re: switch statement

Dave Kreskowiak10-Apr-03 6:03

Dave Kreskowiak

10-Apr-03 6:03

It appears as if nothing is happening because all of your output statements (cout and outState) in your switch statement are wrong.

Your doing this:

outState << inAbrev << " is " << "California" << endl;<br />
cout << inAbrev << " is " << "Alabama" << endl;

What this is doing is trying to output the input filestream which, of course, will output nothing.

If I read your homework right, you should be doing something like this:
outState << firstLetter << secondLetter << " is Alabama" << endl;

RageInTheMachine9532

Re: switch statement

Toni7810-Apr-03 19:13

Toni78

10-Apr-03 19:13

Yep RageInTheMachine is right.

none

Memory Leaks in ADO and MSXML

butchb10-Apr-03 2:56

butchb

10-Apr-03 2:56

I have recently written a Service that parses a large XML file using MSXML, breaks the xml down in to fragments, and then calls a SQL Server stored procedure to process the xml fragment. As each call to the stored procedure is made memory is leaked. I have not been able to find any information concering this particular problem. It also appears that the MSXML objects are also leaking memory. The code fragment that follows is where the leak occurs. All pointer are SmartPointers and no dynamic allocation occurs in my code. Anybody have any ideas?

IXMLDOMNodeListPtr LogEntries = pXMLDocRoot->childNodes;
IXMLDOMElementPtr LogEntry = NULL;
for( int i = 0; i < LogEntries->length; ++i )
{
LogEntry = LogEntries->item[i];
if(LogEntry->nodeType == NODE_ELEMENT )
{
CString nodeName = (TCHAR*) LogEntry->nodeName;
CString spName;
spName.Format(_T("sp_%s"),nodeName);
CString xml = (TCHAR*)LogEntry->xml;

// execute this data
if (S_OK != m_AdoCmd.Execute_StoredProc(spName, xml))
{
CString errorMsg;
errorMsg.Format("Failed to execute stored procedure %s: error: %s", spName, m_AdoCmd.m_errorStr);
LogErrorMsg("ProcessXML: " + errorMsg);
return false;
}
}
LogEntry.Release();

}
LogEntries->reset();

Butch

process exe full path

cubiq10-Apr-03 2:54

cubiq

10-Apr-03 2:54

I have to do this for Windows 95/98/Me/200/NT/XP:
I have the ID of a process(obtained with Process32First/Next) and I want to get the full path of the executable hwo started that process. In PROCESSENTRY32 the member szExeFile gives me only the name of the file but not the full path...
Thank you!
Best regards,
radu.

Re: process exe full path

valikac10-Apr-03 7:53

valikac

10-Apr-03 7:53

One solution is EnumProcessModules().

OpenProcess()
EnumProcessModules()
GetModuleFileNameEx()

Kuphryn

Re: process exe full path

cubiq10-Apr-03 21:15

cubiq

10-Apr-03 21:15

That's what MSDN says:
Windows NT/2000/XP: Included in Windows NT 4.0 and later.
Windows 95/98/Me: Unsupported.

So it's not a solution for 95/98/Me...

Parsing "*.xls" file

Abin10-Apr-03 2:47

Abin

10-Apr-03 2:47

I'm working on a project which will need to read/write xls files(Microsoft Excel documents), hmm... I don't have any idea how xls files are serialized, is there any library for doing this? Oh is there any articles/documentation about this topic? Thanks a lot.

Re: Parsing "*.xls" file

C^hris L^osinger10-Apr-03 2:56

C^hris L^osinger

10-Apr-03 2:56

try http://www.wotsit.org[^]

-c

Image tools: ThumbNailer, Bobber, TIFFAssembler

Re: Parsing "*.xls" file

Zdeslav Vojkovic10-Apr-03 3:06

Zdeslav Vojkovic

10-Apr-03 3:06

previous versions of MSDN library included specification of BIFF format used by Excel, but i think it's not there anymore.

try http://sc.openoffice.org/excelfileformat.pdf[^]
or http://mail.gnome.org/archives/gnumeric-list/2001-September/msg00021.html[^]

[edit]
also this one http://chicago.sourceforge.net/devel/docs/excel/[^]
[/edit]

Counting characters in a buffer

Overfiend10-Apr-03 2:32

Overfiend

10-Apr-03 2:32

Ok im trying to count the characters that i have loaded into a buffer i have set up the following function

void countchars(char *buffer, int *count)
/*Counts the number of characters in the text file */
{
int i,counter;
char cdata;
count['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
do
{
{ for(cdata='A';cdata<='Z';cdata++)
if(buffer[i]==counter[count])
{
count++;
}

i++;
}
}while(buffer[i]!=EOF);
}
I am calling this function using the following code:

countchars(buffer,cdata);
printf("\nDistribution of letters in %s is:",fname);
for (c='A';c<='Z';c++)
{
N=cdata[c]+cdata[tolower(c)];

printf("\n'%c' %4d: ",c,N);
for (i=0;i

Re: Counting characters in a buffer

rrrado10-Apr-03 2:50

rrrado

10-Apr-03 2:50

what a messy code

rrrado

Re: Counting characters in a buffer

yaname10-Apr-03 3:29

yaname

10-Apr-03 3:29

Do your own homework, Overfiend.

Member since Wednesday 9th April, 2003

8:32 10 Apr '03
Counting characters in a buffer - Overfiend
Visual C++ (Programming Forums)

6:31 10 Apr '03
Counting characters in a buffer - Overfiend
C# (Programming Forums)

10:42 9 Apr '03
Counting characters from a text file - Overfiend
Visual C++ (Programming Forums)

Re: Counting characters in a buffer

Overfiend10-Apr-03 20:35

Overfiend

10-Apr-03 20:35

Im trying but i need some help!
because i still cant get this to work

How to ignore Window activate ?

rrrado10-Apr-03 2:19

rrrado

10-Apr-03 2:19

My application creates modeless dialog (in separate thread). The problem is that after creating of window system activates it and will put it foreground. How to create it without setting it active ?
How to restrict this window so that could be activated only by user ?
I tried to do this :

OnActivate(UINT nState, CWnd *pWndOther, BOOL bMinimized)
{
  if (nState == WA_ACTIVE)
    if (pWndOther)
    ::SetActiveWindow(pWndOther->m_hWnd);
}

But pWndOther is always NULL.
Any ideas ?
Thank you

rrrado

Re: How to ignore Window activate ?

imsniper11-Apr-03 0:41

imsniper

11-Apr-03 0:41

First create the Dialog that you want with the resource editor.

BE CAREFULL YOU MUST REMOVE THE "Visible" style from ("More Styles") in the dialog properties.
OR YOU WILL GET A CRASH.!!

Then you must Create a new Class Inherited from CDialog.
Lets say

CUpdateDialog :: public CDialog

with a resource template.. (the dialog editor);

then Create a variable (Object) of the new class.

Lest say

CUpdateDlg m_UpdateDlg;

then go ....

m_UpdateDlg.Create (IDD_UPDATEDIALOG,this);

// This will actuallly do the trick!
m_UpdateDlg.ShowWindow (SW_SHOWNOACTIVATE);

Re: How to ignore Window activate ?

imsniper11-Apr-03 1:00

imsniper

11-Apr-03 1:00

Sorry about previews post...

You must also disable the "Desabled" style from "More Styles" in the resource editor and use this

m_UpdateDlg.ShowWindow (SW_SHOWNA);
m_UpdateDlg.ModifyStyle (WS_DISABLED,NULL,0);

instead of

m_UpdateDlg.ShowWindow (SW_SHOWNOACTIVATE);

Re: How to ignore Window activate ?

rrrado11-Apr-03 3:20

rrrado

11-Apr-03 3:20

Thank you very much ! Rose | [Rose]

I also have idea about DISABLED, but i didn't try it, i thought it won't work Smile | :)

BTW your solution works so that it won't steal focus, but anyway will create window in z-order higher than parent window (althought it is created like child of desktop window).
So I improved that to this :

m_dlg.Create(IDD_MANUAL,CWnd::FromHandle(GetDesktopWindow()));
::SetWindowPos(m_dlg.m_hWnd,AfxGetMainWnd()->m_hWnd,0,0,0,0,SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOSIZE|SWP_SHOWWINDOW);
m_dlg.ModifyStyle(WS_DISABLED,0);

thank you again

rrrado

typedef declaration

Rage10-Apr-03 0:51

Rage

10-Apr-03 0:51

Hi !

I have a class named CGroup in a standard couple of file .cpp and .h, and I'd like to use a STL vector of CGroups in a structure.
So I typdefed it in stdafx.h (as explained in a CP article about using STL ) like that : typedef vector<CGroup> tv_Group. The problem is, the compiler is unable to find the "size" of a CGroup class, since the typedef occurs before the class declaration, and therefore throws an error.

I've also tried

class CGroup;
typedef vector<CGroup> tv_Group;

unsuccessfully.

I can remember having seen a post here in the forum recently about exactly the same problem, but I have forgotten the proposed solution Roll eyes | :rolleyes:

(Only to say, there _is_ a way to do it).

Thanks for any help.

~RaGE();

Re: typedef declaration

Zdeslav Vojkovic10-Apr-03 1:55

Zdeslav Vojkovic

10-Apr-03 1:55

what compiler error exactly do you get?

group.h must be included before typedef. forward declaration "class CGroup;" is not enough because compiler can't deduce the size of CGroup from it. it works if you have a vector of pointers to CGroup:

class CGroup;
typedef vector<CGroup*> tv_Group;

also, i would put the typedef in group.h instead of stdafx.h

hope this helps

Cryptographic Service

YaronNir10-Apr-03 0:48

YaronNir

10-Apr-03 0:48

Hi all,

I've tried to install something from microsoft,
but i got an error saying i need to run Cryptographic Service on my machine.....

any1 can help me???

thanks in advanced,

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

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