C / C++ / MFC

Re: Rebuilding sample application

17-Mar-06 3:05

It seems you have changed something wrongly in linker options...
Was it working properly with nmake options??

Also check whether "Ignore Default Libraries" option is set "Yes".. If so make it "No"

Pablo7517-Mar-06 3:37

Pablo75

17-Mar-06 3:37

I created a new blank solution and can compile and link fine,
with nmake it compiled ok too, but when copying the exe to the winnt pc it fails to load with the "not valid win32 executable" msgbox.

I can't log on terminal server now.. will have to try again later Frown | :-(

Pablo75

Re: Rebuilding sample application

BlueCrack17-Mar-06 3:44

SubClassed Window's WndProc Help

17-Mar-06 3:44

could you please give me just the header lines of all the .h & .c* files. It might help me in diagnosis

Achievement is not a destiny but a endless journey

BlueCrack17-Mar-06 3:00

17-Mar-06 3:00

Does any body know how to get windproc of already subclassed window. bcoz GetWindowLong fails in getting wndproc of subclass window

Thanks

Aceivement is not a destiny but a endless journey

-- modified at 9:01 Friday 17th March, 2006

DLL Methods

ziashahid17-Mar-06 2:57

ziashahid

17-Mar-06 2:57

Hi all!
I want to get the function name and its signature from any type of DLL(whether it is a COm dll or simple C++ DLL). If the DLL doesn't have any exported function, so how could i get the name and signature of those functions. Is there any tool exists then plz tell, i tried Dependencywalker.exe, but it shows only exported fns.
if anyone can send me any sode then i will be highly obliged.

Regards,
Zia

-- modified at 8:59 Friday 17th March, 2006

Re: DLL Methods

Eytukan17-Mar-06 4:48

Eytukan

17-Mar-06 4:48

did you try dumpbin.exe ?

VuNic

Re: DLL Methods

BlueCrack20-Mar-06 4:00

LCP Echo-Request on Windows

20-Mar-06 4:00

Hi Zia

The very basic way to find a signature is to get the corresponding *.h file Wink | ;)

As far as i know, you can just see the exported/imported fn's but not the signature. But there are some traces left out on that.
1) If fn's are in simple 'C' dll
Then no way to find a way on that. But of course if you are very good at assembly language, you may dissamble & you can trace upto certain extent using stack memory transactions which are basically highly associated with the size of the input arguments but not the TYPE.
In short you can know the size of the input arguments in bytes (that too not always) but you can NOT know the type.

2) If it a C++ dll. then the linker will decorate the exported functions with springs like MyFuncion@ZA@12J@owe.
even though it has some kind of interpretions its difficult to rely solely on that

3) If it's a COM dll.. lol always 4 COM functions will be there whose signature is public. other than that if anything else is exported the same rulez as above applies

In short.. I am sorry.. its really very difficult to find it out (i think so). And you cant use dumpbin (coz its just a complicated version of depenwalker) Wink | ;)

Thanks

_______________________________________
Achievement is not a destiny but a endless journey

Hideraldo Bernardo17-Mar-06 2:48

Hideraldo Bernardo

17-Mar-06 2:48

Hi,

I am trying to keep my PPP connection alive on an Windows machine. To do that, I want to send an "LCP echo-request" packet over the established PPP link.

Do you know how to enable the generation of an "LCP echo-request" packet over an PPP connection, using the RASAPI on Windows?

Regards,

Hideraldo

Threads, DLL

miramarmisiones17-Mar-06 2:13

miramarmisiones

17-Mar-06 2:13

Hi, I have a small MFC app, i have two buttons, i have a dummy function too.
I have a small dll, the issue is when i press the button 2 I have memory leak (i have tried with CMemoryState and does not detect any memory leak, but i can see it in the Process Explorer).

In my simple dll code i have in the "stdafx.h" file the following line
#include <afxwin.h>,
but if i comment this line, the memory leak is gone.

I tried to comment all my dll code (except that include) and the problem still persists.

Any clues of this behavior?

(I tried in a Win32 application instead of MFC and i have the same problem)

void CPruebaThreadDlg::OnBnClickedButton1()
{
LPVOID lpParam = NULL;

AfxBeginThread(dummy, lpParam, THREAD_PRIORITY_NORMAL, 0, 0, NULL);
}

void CPruebaThreadDlg::OnBnClickedButton2()
{
int i;
HMODULE hmod = LoadLibrary("SimpleDll.dll");
while(true)
{
for(i = 0; i <= 150; i++)
OnBnClickedButton1();
Sleep(700);
}
}

UINT dummy(LPVOID)
{
return 0;
}

Acessing excel (*.xls) in vc++

chetan21018317-Mar-06 2:12

chetan210183

17-Mar-06 2:12

Hi,
I want to copy the complete data from an excel sheet to another excel sheet.And also serach for the specific data from the specific column and copy down the data to the excel sheet. Is there any possible way to do so?

Thanks a lot in advance.
Chetan.

Helping others satisfies you...

FarPointer17-Mar-06 4:04

FarPointer

17-Mar-06 4:04

Hi,
You can convert that xls to csv and parse it to read the specified coloumn ,this would be the fast mechanism if the data to be read is huge,
or else you can use automation .

Regards,
FarPointer

chetan21018317-Mar-06 4:11

chetan210183

17-Mar-06 4:11

hi,
Thanks for reply.

There is a .xls file. i tried to open it using fopen but i realized that excel file is a binary format file and could not be opened using fopen.
I have to use .xls file. i cannot use .csv file.
I have no idea about automation. could you please refer some links, which helps me.

Again thanks a lot
Chetan.

Helping others satisfies you...

Hamid_RT17-Mar-06 4:06

Hamid_RT

17-Mar-06 4:06

http://www.codeguru.com/cpp/data/mfc_database/microsoftexcel/article.php/c4307/[^]

maybe it is some helpful to you

chetan21018317-Mar-06 4:13

chetan210183

17-Mar-06 4:13

Thanks, i will go through the link.

Helping others satisfies you...

rohinimtech17-Mar-06 1:10

rohinimtech

17-Mar-06 1:10

Hello friends

I have written a code in c++ for parallel port reading .
Programm is running successfully.
A analog to digital converter is attached to parallel printer port using 25 pin.
one side this ADC is attached to a device which gives analog voltages.
Following programm read the voltages pulses and print their values.
But I am not able to run this programm in VC++
I using conio.h and _outp _inp.
I have to run this programm using MDI application only,not dialog based.
plz suggest me where should I write the code ,what modification should I made in the following programm.
How is parallel port programming work in VC++(MDI app only)
void CStartport2View::OnDraw(CDC* pDC)
{
CStartport2Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);

CString ms,ms1;

unsigned char a; int j,i,c; float voltage;

while(1)
{
c=0;
_outp(0x378,2);
_outp(0x378,0);
_outp(0x378,2);

for(j=0;j<5000;j++);

for(j=0;j<16;j++);
{
_outp(0x378,3);

for(i=0;i<5000;i++);

_outp(0x378,2);

for(i=0;i<5000;i++);a = _inp(0x379);

a=a&0x8; a=a>>3;
a=a&0x1; c= c*2; c=c|a;
}

ms.Format("%d",c);

pDC->TextOut(50,50,ms);

getch();
voltage = (5000.*c)/4096;

ms1.Format("%f",voltage);

ms1 = ms1.Mid(0,ms1.Find('.')+3);

pDC->TextOut(50,100,ms1);
}
Any help would be appreciated

rohini sharma

khan++17-Mar-06 1:18

khan++

17-Mar-06 1:18

WinNT will not let you use _outp() etc.
You will need to use a driver:
http://www.logix4u.net/inpout32.htm[^]

this is this.

rohinimtech19-Mar-06 18:14

rohinimtech

19-Mar-06 18:14

Thanku Khaan .I try and then i will inform u.

rohini sharma

namaskaaram17-Mar-06 2:13

namaskaaram

17-Mar-06 2:13

well actually this program will work only in windows 9x series!.....i had this prob !.....didnt work in the winxp,2000.....
itz like after the win 9x os series all the ports,global mem share can go only via win api related calls.....

rohinimtech19-Mar-06 18:12

rohinimtech

19-Mar-06 18:12

I am wusing win 98.
Should I use App class for global mem variables.
Sprry but i could not understand ur solution.
bye

rohini sharma