Re: Reading BYTE* - C / C++ / MFC Discussion Boards

Re: Reading BYTE* [modified]

sunit522-May-06 20:21

sunit5

22-May-06 20:21

sivaprakashshanmugam wrote:
ZeroMemory (val,3);
memcpy (val,ByteValue,3);

in this case ZeroMemory is not required. u urself have rectified the problem ie it should be memcpy (val,ByteValue,3) rather than memcpy (ByteValue,val,3)(in ur first posting)

never say die

-- modified at 2:22 Tuesday 23rd May, 2006

Re: Reading BYTE*

Maxwell Chen22-May-06 20:24

Maxwell Chen

22-May-06 20:24

memcpy(destination, source, length);

Maxwell Chen

Re: Reading BYTE*

satsumatable22-May-06 20:31

satsumatable

22-May-06 20:31

As per your advise i changed my code like this; still i am not able to see my string which i sent from application.

//ActiveX control code
void VRMControl::SendBy(BYTE* ByteValue, LONG Length)
{
BYTE val[3];
ZeroMemory (val,3);
memcpy (val,ByteValue,3);
AfxMessageBox (CString(val));
}

It says "Object Reference Error". Please provide me solution. In my first post i did mention my ActiveX calling code also please look over that too since i might donce some mistakes there.

Thanks..

Re: Reading BYTE*

Maxwell Chen22-May-06 20:39

Maxwell Chen

22-May-06 20:39

sivaprakashshanmugam wrote:
//ActiveX control code
void VRMControl::SendBy(BYTE* ByteValue, LONG Length)
{
BYTE val[3];
ZeroMemory (val,3);
memcpy (val,ByteValue,3);
AfxMessageBox (CString(val));
}

void VRMControl::SendBy(BYTE* ByteValue, LONG Length)<br />
{<br />
BYTE val[3];<br />
// ZeroMemory (val,3); // No need for this line.<br />
memcpy (val,ByteValue,3); <br />
AfxMessageBox (CString(val)); /* Before doing this (converting a byte array to string), you have to find out if there a '\0' to end this string.  If ByteValue[2] = '\0', then it is OK.  If not, then it crashes your program. */<br />
}

Maxwell Chen

Re: Reading BYTE*

satsumatable22-May-06 20:54

satsumatable

22-May-06 20:54

Whats wrong with the following, actually my VC++ application is not calling ActiveX method it says "Object Reference Error", i can able to compile successfully.

brFileContent->Read (abData,0,2); //brFileContent is Binary Reader

Byte *pbManagedData = &(abData[0]); // Get starting point of Array (I can able to see Data and address here

axSimpleAdditionAtx1 ->FinalBy (pbManagedData); // Calling Activex

Method signature in ActiveX which is not getting called..

void VRMControl::SendBy(BYTE* ByteValue, LONG Length)
{

}

Re: Reading BYTE*

Maxwell Chen22-May-06 21:03

Maxwell Chen

22-May-06 21:03

sivaprakashshanmugam wrote:
axSimpleAdditionAtx1 ->FinalBy (pbManagedData); // Calling Activex

Shouldn't it be as ... below (the dot) ?
axSimpleAdditionAtx1.FinalBy (pbManagedData); // Calling Activex

Maxwell Chen

Re: Reading BYTE*

satsumatable22-May-06 21:07

satsumatable

22-May-06 21:07

No it should be pointer i can able to call some other methodes, this alone is giving thie error seems there is some signature or data mismatching that i am not able to find out please help me out.

Re: Reading BYTE*

Maxwell Chen22-May-06 21:30

Maxwell Chen

22-May-06 21:30

sivaprakashshanmugam wrote:
this alone is giving thie error seems there is some signature or data mismatching

Can you give the prototype of FinalBy of ActiveX control your trying to use?

Maxwell Chen

Re: Reading BYTE*

satsumatable22-May-06 21:34

satsumatable

22-May-06 21:34

This is the prototype which i am using in ActiveX

void VRMControl::FinalBy(BYTE* FinalStr)
{
AfxMessageBox ("Called..");
}

Even the message "Called.." is not displayed before that itself it throws error.

Re: Reading BYTE*

Maxwell Chen22-May-06 22:01

Maxwell Chen

22-May-06 22:01

sivaprakashshanmugam wrote:
Even the message "Called.." is not displayed before that itself it throws error.

Then it should be other reason about the initialization of that ActiveX instead of invoking the method FinalBy(...).

Maxwell Chen

SMBIOS

aaaan22-May-06 19:39

aaaan

22-May-06 19:39

hi
is there any way to read the SMBIOS information?
that means i want to read that low level physical memory
where SMBIOS information are stored.please help me,its
urgent.

thanx

nirmal

Re: SMBIOS

Laxman Auti22-May-06 19:48

Laxman Auti

22-May-06 19:48

nirmal wrote:
is there any way to read the SMBIOS information?
that means i want to read that low level physical memory
where SMBIOS information are stored.please help me,its

See the following Links where you can get some information realted to this topic.

download.microsoft.com/download/5/D/6/5D6EAF2B-7DDF-476B-93DC-7CF0072878E6/SMBIOS.doc[^]

http://www.pcpitstop.com/faq/smbios.asp?print=1#dump[^]

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You can if you think you can
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Re: SMBIOS

aaaan22-May-06 20:37

aaaan

22-May-06 20:37

i need some code, that will help me.
can anybody help me please.

thanx

nirmal

CString to Char array

VinayCool22-May-06 19:36

VinayCool

22-May-06 19:36

Hi,
I have variable FName & Str,

CString FName;
char str[100];

i want the FName to be stored in str i tryed using

str = FName;

i am getting error
error C2440: '=' : cannot convert from 'class CString' to 'char [100]'

Can anyone help me with this convershion or any related notes or links will be helpfull.

Regards,
Vinay Charan.

Re: CString to Char array [modified]

kakan22-May-06 19:40

kakan

22-May-06 19:40

Some alternatives:

strcpy(str, (LPCTSTR) FName);

strcpy(str, FName.GetBuffer(0));

OR:
char * pStr = (LPCTSTR) FName;

-- modified at 1:52 Tuesday 23rd May, 2006

Re: CString to Char array

Laxman Auti22-May-06 19:43

Laxman Auti

22-May-06 19:43

Vinay wrote:

Hi,I have variable FName & Str,

CString FName;
char str[100];
i want the FName to be stored in str i tryed using
str = FName;
i am getting error
error C2440: '=' : cannot convert from 'class CString' to 'char [100]'
Can anyone help me with this convershion or any related notes or links will be helpfull.

See the following code

strcpy(str,FName.GetBuffer(0));
	FName.ReleaseBuffer();

Hope this helps you Smile | :)

Knock out 't' from can't,
You can if you think you can
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file not opening

VinayCool22-May-06 20:22

VinayCool

22-May-06 20:22

Hi Laxman,

Do u remember yesterday i had asked u for changing the file path

C:\folder\folder\file.ext

to

c:/folder/folder/file.ext

now i have written a small program in which will change the input and get the output as
c:/folder/folder/file.ext

now i am facing one more problem file is not opening

ShellExecute(NULL, "open", str,NULL, NULL, SW_SHOWNORMAL)

is this the correct way to open the file is the code correct...

str is of char array
char str[100];

Re: file not opening

Laxman Auti22-May-06 22:37

Laxman Auti

22-May-06 22:37

Can you show me the code how you changed the string path?
May be there was any bug i think code is correct.

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Re: file not opening

VinayCool22-May-06 22:43

VinayCool

22-May-06 22:43

Hi Laxman,

below code changes c:\folder\folder\file1.txt

to

c:/folder/folder/file1.txt

void CSearchDlg::OnDblclkSout()
{
// TODO: Add your control notification handler code here

// Code to open the selected file.
int d;
d=m_SOUT.GetCurSel();
CString FName;
m_SOUT.GetText(d,FName);

char str[100];
int i,l,k,j,m;
strcpy(str, FName);

for (i=0;str[i]!='\0';i++)

{

if (str[i]=='\\')

{

l=i; k=0;
char str1[100];
if (str[l+1]=='\0')
{
str[l]='/';
}
else
{
for (j=l+1;str[j]!='\0';j++)
{
str1[k]=str[j];
k++;

}
str1[k]='\0';
str[l]='/';
for (m=0;str1[m]!='\0';m++)
{

str[++l]=str1[m];

}

}

str[++l]='\0';
i=i++;

}

}
m_ctrlEDIT.SetWindowText(str);

ShellExecute(NULL, "open", str ,NULL, NULL, SW_SHOWNORMAL);
}

Re: file not opening

Laxman Auti22-May-06 23:01

Laxman Auti

22-May-06 23:01

Try the following code as its tested and works fine.

CString str;
m_SOUT.GetText(m_SOUT.GetCurSel(),str);
ShellExecute(m_hWnd,NULL,str, NULL, NULL, SW_SHOWNORMAL);
m_ctrlEDIT.SetWindowText(str);

Hope this solve your problem.

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Re: file not opening

VinayCool22-May-06 23:09

VinayCool

22-May-06 23:09

Hi Laxman,

I tryed the above code it has no effect ..file does not open

m_ctrlEDIT.SetWindowText(str);

i have used this statment to just to check the value of str

str was value was like

C:\Box01/00000304/00000034.txt

as u said it cant open \ right ???

Re: file not opening

Laxman Auti22-May-06 23:31

Laxman Auti

22-May-06 23:31

vinaycool wrote:
C:\Box01/00000304/00000034.txt

How this is possible?

Your path in list box should be either
C:/Box01/00000304/00000034.txt
or
C:\Box01\00000304\00000034.txt

i think you are not inserting the data into list box correctly..
have you?

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Re: file not opening

VinayCool22-May-06 23:39

VinayCool

22-May-06 23:39

Hi,

In the list box items are like
C:\Box01/00000304/00000034.txt
C:\Box01/00000304/00000035.txt
C:\Box01/00000304/00000036.txt

but after the function i get the value in the str as

C:/Box01/00000304/00000034.txt

since the path is correct with file name it should open right ??

Re: file not opening

Laxman Auti22-May-06 23:47

Laxman Auti

22-May-06 23:47

vinaycool wrote:

In the list box items are like
C:\Box01/00000304/00000034.txt
C:\Box01/00000304/00000035.txt
C:\Box01/00000304/00000036.txt

but after the function i get the value in the str as

C:/Box01/00000304/00000034.txt

since the path is correct with file name it should open right ??

Can you post the block for insertion of the data into list box ?

and Do you want to open only .txt files?

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Re: file not opening

VinayCool22-May-06 23:59

VinayCool

22-May-06 23:59

Hi,

code for inseting file names to list box & i have open only txt files only.

void CSearchDlg :: disp ()
{
int i = 0;
while (strlen (shWord[i].file_name) > 1)
{
m_SOUT.AddString(shWord[i].file_name);
int k = 0;
TCHAR buff[100];
strcpy(buff,"\0");
while (shWord[i].w_offset[k] != -1)
{
TCHAR buffer[50];
int f=shWord[i].w_offset[k];
_itoa(f,buffer,10);
strcat(buff,buffer);
strcat(buff,",");
k++;
}
buff[strlen(buff)-1]='\0';
m_SOUT.AddString(buff);
i++;
}
}

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