C / C++ / MFC

#include <string.h>
 
char * _memmem(const char *mem, size_t mem_size, const char *sub, size_t sub_size)
{
    // returns a pointer of the first occurance of a sub-buffer in a memory buffer
    // returns NULL if the sub-buffer was not found
    // is not limited by embedded NULLs in either the memory buffer or the sub-buffer
    //
    // Parameters:
    //    mem      - The memory buffer to scan
    //    mem_size - The size, in bytes, of the memory buffer
    //    sub      - The sub buffer to find
    //    sub_size - The size, in bytes, of the sub buffer
 
    char *ret = NULL;
    char *ptr = const_cast<char *>(mem);
    while (ptr && !ret)
    {
        ptr = reinterpret_cast<char *>(memchr(ptr, *sub, mem_size - (sub_size - 1) - (int)(ptr - mem)));
        if (ptr)
        {
            if (!memcmp(ptr, sub, sub_size))
                ret = ptr;
            ++ptr;
        }
    }
 
    return ret;
}

NS17 wrote:

I always got the same click event (OK button) when I press 'Enter Key', regardless the button that has the focus.

<marquee direction="up" height="30" scrolldelay="1" step="1" scrollamount="1" hspace="0" vspace="0">
--Owner Drawn
--Nothing special
--Defeat is temporary but surrender is permanent
--Never say quits
--Jesus is Lord

<br />
this->GetEditCtrl().SendMessage(WM_HSCROLL,SB_LEFT);<br />
this->GetEditCtrl().SendMessage(WM_VSCROLL,SB_BOTTOM);<br />

"Take only what you need and leave the land as you found it." - Native American Proverb

"Take only what you need and leave the land as you found it." - Native American Proverb

kk_vp wrote:

BTW, in class wizard, I could not see OnMessage(). I had to type manually in MesageMap. Why ?

"Take only what you need and leave the land as you found it." - Native American Proverb

"Take only what you need and leave the land as you found it." - Native American Proverb