C / C++ / MFC Discussion Boards

niruban15-Mar-05 23:57

15-Mar-05 23:57

hi every one,
i am reading VC++ and want to know that which and what are the important concepts in VC++.how to learn that...

Re: VC++ Chatting Program

David Crow16-Mar-05 3:00

David Crow

16-Mar-05 3:00

Is this a trick question? All concepts are important. Learn the language as a whole.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

DCom

pardis15-Mar-05 20:44

pardis

15-Mar-05 20:44

Hi all
when i type( CoCreateInstanceEx() , it shows me the parameters , but when i compile it, gives an error "CoCreateInstanceEx is not a member of global namespace" and "undeclared identifer". i attached the <atlbase.h>. with cocreateInstane , it works(visual c++6).
thank you very much

Re: DCom

Michael P Butler16-Mar-05 11:17

Michael P Butler

16-Mar-05 11:17

From MSDN

"You must include the #define _WIN32_DCOM preprocessor directive at the beginning of your code to be able to use CoCreateInstanceEx."

Hope this helps,

Michael

CP Blog [^] Development Blog [^]

How to use AddJob and ScheduleJob to print

keven.zheng15-Mar-05 20:19

keven.zheng

15-Mar-05 20:19

my codes like these:

//printer name in buf
if(!OpenPrinter(buf,&handle,NULL)) //open printer
{
MessageBox("Could not open printer","Error",
MB_OK/MB_ICONINFORMATION);
return;
}

DWORD size;
ADDJOB_INFO_1 * info;
DWORD numNeed = 0;
size = 4096;
BOOL bReturn = FALSE;
info=(ADDJOB_INFO_1 *)LocalAlloc((LMEM_FIXED/LMEM_ZEROINIT),size);
//add job into printer
bReturn = AddJob(handle,1,(LPBYTE)info,size,&numNeed);
CString str = "E:\\1.plt";
memcpy(info->Path,str,strlen(str));
info->Path[strlen(str)] = '\0';
bReturn = ScheduleJob(handle,info->JobId);
LocalFree(info);
ClosePrinter(handle);

when i use ScheduleJob to print the file "E:\\1.plt",ScheduleJob return FALSE. I do not know how to use ScheduleJob in my codes.

Help Me!

Using command-line?

dSolariuM15-Mar-05 20:14

dSolariuM

15-Mar-05 20:14

Hi all,
I want to use command-line :
for example:
myfile.exe /f

Best wishes,
Thanks.

Re: Using command-line?

ThatsAlok15-Mar-05 20:20

ThatsAlok

15-Mar-05 20:20

Use GetCommandLine() api to get current Commandline argument of program.

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Re: Using command-line?

David Crow16-Mar-05 3:02

David Crow

16-Mar-05 3:02

In addition to GetCommandLine(), there's also the __argc/__argv pair.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

How to detect Change

ThatsAlok15-Mar-05 20:05

ThatsAlok

15-Mar-05 20:05

Some time back i come across an api which notify the application about registry change, but due HUMAN NATURE Smile | :)

of forgeting thing at time they urgently required..... I too forget that api!!!

is any body remember that api!!!?

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Re: How to detect Change

ThatsAlok15-Mar-05 20:23

ThatsAlok

15-Mar-05 20:23

After Long search in MSDN i got it .....

RegNotifyChangeKeyValue

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Enumerate IE windows using Shell fails in WH_JOURNALRECORD hook

Girish Iyer15-Mar-05 19:54

Girish Iyer

15-Mar-05 19:54

Hi,
I am trying to call the following code within a WH_GETMESSAGE hook procedure and it works fine. But the same piece of code fails inside a WH_JOURNALRECORD hook procedure. Can anyone help me in this regard. Confused | :confused:

void EnumIE()
{ CoInitialize( NULL );
SHDocVw::IShellWindowsPtr spSHWinds;
spSHWinds.CreateInstance(__uuidof(SHDocVw::ShellWindows));

long nCount = spSHWinds->GetCount();

IDispatchPtr spDisp;
for (long i = 0; i < nCount; i++)
{ _variant_t va(i, VT_I4);
spDisp = spSHWinds->Item(va);

SHDocVw::IWebBrowser2Ptr spBrowser(spDisp);
if (spBrowser != NULL)
{ MSHTML::IHTMLDocument2Ptr spDoc(spBrowser->GetDocument());
if (spDoc != NULL)
{ HWND hWnd = NULL;
spBrowser->get_HWND ((long*)(&hWnd));
}
}
}
CoUninitialize();
}

Catching STL exceptions

PrashantJ15-Mar-05 19:53

PrashantJ

15-Mar-05 19:53

Hi,

Can anybody share some ideas on how to catch STL exceptions in a C++ code.
I would appreciate if some pseudocode or a link is provided with regard to this.

Thanks,
JOE

Re: Catching STL exceptions

markkuk16-Mar-05 0:09

markkuk

16-Mar-05 0:09

#include <exception>
#include <iostream>
// ...
try {
// code that may throw an STL exception
}
catch (const std::exception &err) {
    std::cerr << err.what() << std::endl;
    // more error handling
}

WCSTOMBS

sunit515-Mar-05 19:45

sunit5

15-Mar-05 19:45

ALOK
I HAVE A XML WHOSE XMLDOMDocumentPtr IS pIDomOutDoc.

wchar_t *wcstr=pIDomOutDoc->xml;
//pIDomOutDoc->xml; returns the xml in unicode

out_XML= (char *)malloc( MB_CUR_MAX);
//out_XML STORES THE OUTPUT
wcstombs(out_XML,wcstr,MB_CUR_MAX);
::AfxMessageBox(out_XML);
BUT I AM NOT GETTING CORRECT OUTPUT.THE RESULT PRINTED OUT IS SOMETHING LIKE <yyyy>yyyy

Re: WCSTOMBS

sunit515-Mar-05 19:54

sunit5

15-Mar-05 19:54

alok

sorry to disturb u. i did it .i replace the MB_CUR_MAX BY CHAR[1000].BUT I WANT TO MAKE IT INDEPENDENT OF THE SUBCRIPT VALUE.

Re: WCSTOMBS

ThatsAlok15-Mar-05 20:15

ThatsAlok

15-Mar-05 20:15

do this way

USES_CONVERSION;

  TCHAR* out_XML=W2T(pIDomOutDoc->xml);
   
//check for bad string atleast 1 Byte
  if( IsBadStringPtr(out_XML,1))
  {
    MessageBox("String is not conversted");
  }
else
  {
   MessageBox(out_XML,"String");
  }

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

string to time conversion

irudayam15-Mar-05 19:19

irudayam

15-Mar-05 19:19

I want to convert the date and time in the character array format ( Wed, 16 Mar 2005 04:16:39 GMT ) to timestamp value using c++.

Thanx Smile | :)

Re: string to time conversion

David Crow16-Mar-05 2:59

David Crow

16-Mar-05 2:59

Have you looked into COleDateTime::ParseDateTime()?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

ActiveX control problem please help

rdeekonda15-Mar-05 19:12

rdeekonda

15-Mar-05 19:12

I have created an ATL composite control, and am putting it on multiple instances of a modeless dialog box. For each instance of the control I am calling its draw function with different parameters but the multiple instances all display with the same parameters. What is happening and how do I get around this problem.
Esteemed members please help.

Deekonda Ramesh

Read Params in ActiveX

DharmendraNathW15-Mar-05 19:12

DharmendraNathW

15-Mar-05 19:12

Hi-
I have developed an ActiveX and I want it to use in browser, how can I give Params to the ActiveX, I overloaded the load method... but how the parameters will be read?

I have added the following piece of code in the header file,

BEGIN_COM_MAP(CiRemotePCActiveXCtrl)
COM_INTERFACE_ENTRY(IPersistPropertyBag)
END_COM_MAP()

and it gives me error messages,

error C2039: 'Lock' : is not a member of 'ActiveXCtrl'
error C2039: 'Unlock' : is not a member of 'ActiveXCtrl'

error C2259: 'ActiveXCtrl' : cannot instantiate abstract class
error C2440: 'static_cast' : cannot convert
from 'ActiveXCtrl::_ComMapClass *' to 'IPersistPropertyBag *'
error C2440: 'initializing' : cannot convert from 'ATL::_ATL_CREATORARGFUNC (__stdcall *)' to 'DWORD_PTR'
error C2660: 'CCmdTarget::InternalQueryInterface' : function does not take 4
arguments

I also implemented my class with 'IPersistPropertyBagImpl' interface,

Please help me in solving the problem,

Thanks in advance,

dwurity

Dharmendra

Hi Everyone

Rassul Yunussov15-Mar-05 18:14

Rassul Yunussov

15-Mar-05 18:14

Have anybody had deal with neural networks????
I got one problem now, i need a good PCA aglirithm, it will be excellent if anybody give me a link to the source and theory. Especially i'm interesting in Oja, Sanger , Hebbian neural networks that make PCA.

And another question.. Shame on me, but i can't remember how to do it Smile | :)

I got The DIB section (only bitmapinfoheader and array of bits), so i want to copy them to HDC. I'm using the source from Codeproject about capturing the images from AVI, and int saves them in the files, i would like to copy them to HDC as i said....
Thanks.

Re: Hi Everyone

John R. Shaw16-Mar-05 12:34

John R. Shaw

16-Mar-05 12:34

Rassul Yunussov wrote:
i want to copy them to HDC

If you have a DIB section, then you may have a handle to the DIB section, in which case BitBlt.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

CrossWord puzzle alogrithm

Mohsen Saad15-Mar-05 18:02

Mohsen Saad

15-Mar-05 18:02

hello,

my application asks the user to enter a few words and the application arrange these words to create a 15x 15 crossword puzzle .

do you know any alogrithm that can help me to arrange the words in a way that gets the best result

Re: CrossWord puzzle alogrithm

Ravi Bhavnani16-Mar-05 3:39

Ravi Bhavnani

16-Mar-05 3:39

Here are some crossword generator source code links to (not sure which one would give you the "best" result):

http://www.gtoal.com/wordgames/crosswords.html[^]

/ravi

My new year's resolution: 2048 x 1536
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THE USE OF "cout statement inside the for loop"

phijophlip15-Mar-05 17:56

phijophlip

15-Mar-05 17:56

Hello Friends,

Please observe the code which is given below

#include <iostream.h>

int main()
{
for(int i=0 ; i<=10 ;i++ , cout << i << endl );

cout << endl;

return 0;
}

Please observe the the second which is given below

#include <iostream.h>

int main()
{

for(int j=0 ; j<=10 ;j++ )
cout << j << endl;

return 0;
}

My question is how is it possible to use cout in the inside the for loop.Is their any difference in the between the two program? Can anyone point the difference in terms of cpu speed,memory management etc.What is advantage of writing the code as you saw in the first section of the code ie the first program

Hoping for a reply.

Best Regards,
Phijo
Smile | :)

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