BYTE array size

>I have a BYTE array -
BYTE const* pbBinary

I would like to know how many bytes in that byte array

but if I do - sizeof(* pbBinary); - then I got 1
but if I do - sizeof( pbBinary); - then I got 4

I am sure the array has hundreds of bytes

how can I do that?

I have a BYTE array *-
BYTE const* pbBinary
>
I would like to know how many bytes in that byte array
>
but if I do - *sizeof(* pbBinary); *- then I got 1
but if I do - sizeof( pbBinary); - then I got 4
>
I am sure the array has hundreds of bytes
>

>"Chunekit Pong" <worlman385@yahoo.comwrote in message news:f54ai4l6o3hdj8k2j0as78nhm0166ndt4r@4ax.com...>
>You don't have a BYTE array, you have a pointer to BYTE.
>(What is a BYTE?)
>>
>Without other information you can't.
>

On Thu, 20 Nov 2008 08:46:12 +0100, "Fred Zwarts" <F.Zwarts@KVI.nl>
wrote:
The whole code is like this - the purpose is to convert binary file
into a Base64 string
=================
typedef unsigned char BYTE;
std::ifstream file1("c:/test2.png");

// read from test2.png into BYTE array
std::vector<BYTEbytes(
(std::istreambuf_iterator<char>(file1))
, (std::istreambuf_iterator<char>())
);
if(bytes.empty())
; // no bytes have been read

BYTE const* pbBinary = &bytes[0];
int size = sizeof(pbBinary);

The whole code is like this - the purpose is to convert binary file

I have a BYTE array -
BYTE const* pbBinary
>
I would like to know how many bytes in that byte array
>
but if I do - sizeof(* pbBinary); - then I got 1

but if I do - sizeof( pbBinary); - then I got 4

I am sure the array has hundreds of bytes
>
how can I do that?

On Nov 20, 9:25 am, Chunekit Pong <worlman...@yahoo.comwrote:

You cannot get the size of an array, by doing sizeof on a
pointer to an external array.

Only if the pointer is in fact declared as a statically
dimensioned array (eg. BYTE pbBinary[10]) you can get the size
of the array by doing sizeof(pbBinary).

I have a BYTE array -
BYTE const* pbBinary

I would like to know how many bytes in that byte array

but if I do - sizeof(* pbBinary); - then I got 1
but if I do - sizeof( pbBinary); - then I got 4

I am sure the array has hundreds of bytes

On Thu, 20 Nov 2008 08:46:12 +0100, "Fred Zwarts" <F.Zwa...@KVI.nl>
wrote:
>
>
>>>>>>>>
The whole code is like this - the purpose is to convert binary file
into a Base64 string
=================
* * * * * * * * typedef unsigned char BYTE;
* * * * * * * * std::ifstream file1("c:/test2.png");
>
* * * * * * * * // read from test2.png into BYTE array
* * * * * * * * std::vector<BYTEbytes(
* * * * * * * * * * * * (std::istreambuf_iterator<char>(file1))
* * * * * * * * * * * * , (std::istreambuf_iterator<char>())
* * * * * * * * * * * * );
* * * * * * * * if(bytes.empty())
* * * * * * * * * * * * ; // no bytes have been read
>
* * * * * * * * BYTE const* pbBinary = &bytes[0];
* * * * * * * * int size = sizeof(pbBinary);
>
* * * * * * * * unsigned long ulEncLen = 0;
* * * * * * * * char *pEncOut = NULL;
>
* * * * * * * * BOOL fRet = ::CryptBinaryToString( pbBinary, size,
CRYPT_STRING_BASE64, pEncOut, &ulEncLen );
====================
BOOL WINAPI CryptBinaryToString(
* __in * * * const BYTE *pbBinary,
* __in * * * DWORD cbBinary,
* __in * * * DWORD dwFlags,
* __out_opt *LPTSTR pszString,
* __inout * *DWORD *pcchString
);

On Thu, 20 Nov 2008 08:46:12 +0100, "Fred Zwarts" <F.Zwarts@KVI.nl>
wrote:
>>
The whole code is like this - the purpose is to convert binary file
into a Base64 string
=================
typedef unsigned char BYTE;
std::ifstream file1("c:/test2.png");
>
// read from test2.png into BYTE array
std::vector<BYTEbytes(
(std::istreambuf_iterator<char>(file1))
, (std::istreambuf_iterator<char>())
);
if(bytes.empty())
; // no bytes have been read
>
BYTE const* pbBinary = &bytes[0];
int size = sizeof(pbBinary);

>
unsigned long ulEncLen = 0;
char *pEncOut = NULL;
>
BOOL fRet = ::CryptBinaryToString( pbBinary, size,
CRYPT_STRING_BASE64, pEncOut, &ulEncLen );