ATL / WTL / STL

void DateTimePicker::setUpDownControlsVisible( const bool& val )
{
	LONG_PTR style = ::GetWindowLongPtr( hwnd_, GWL_STYLE );

	if ( val ) {
		style |= DTS_UPDOWN;
	}
	else {
		style &= ~DTS_UPDOWN;
	}

	::SetWindowLongPtr( hwnd_, GWL_STYLE, style );
	::SetWindowPos( hwnd_, NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED );
	InvalidateRect( hwnd_, NULL, TRUE );
}

class A
{
<pre> private :
     int ^x;// actually this is a complex object
     ...
     B ^ ojbB;

     ojbB-&gt;TheFunctionneedsPrivateObjectof_A( int &amp;x)// x will get modified in this function

  // Use modified x
}</pre>

<pre>class B
{
 public TheFunctionneedsPrivateObjectof_A(int ^x)
 {
   Modify x here
 }

}</pre>

<pre>property MyCallback^  CallBack1
    {
        MyCallback^  get {return  m_pCallBack; }
    }

    Private MyCallback^ m_pCallBack;</pre>

#include <string>
#include "stdafx.h"
int _tmain(int argc, _TCHAR* argv[])
{
std::string s = " ";
printf(s);

return 0;
}

#include <string>
#include "stdafx.h"
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
string s = " ";
printf(s);

return 0;
}

<br />
go<br />
alter procedure trans_GetList<br />
as<br />
begin<br />
update dbo.States set Name = '@' where StateId = 3<br />
<br />
select StateId from dbo.States<br />
end<br />
go<br />

<br />
CDataSource con;<br />
<br />
HRESULT err;<br />
    <br />
err = con.OpenFromInitializationString(L"...");<br />
   <br />
CSession session;<br />
<br />
err = session.Open(con);<br />
<br />
CCommand < CDynamicParameterAccessor, CBulkRowset, CMultipleResults > cmd;<br />
		<br />
err = cmd.Create(session, L"exec dbo.trans_GetList");<br />
err = cmd.Prepare();<br />
<br />
void *bufCmd = 0;<br />
<br />
err = cmd.BindParameters(&cmd.m_hParameterAccessor, cmd.m_spCommand, &bufCmd);<br />
err = cmd.Open(0, 0);	<br />
err = cmd.MoveFirst(); //Here is failed - m_spRowset is NULL<br />
<br />
while(err == S_OK)<br />
{<br />
   ...<br />
   err = cmd.MoveNext();<br />
}<br />
<br />
session.Close();<br />
con.Close();<br />

PROPERTY_INFO_ENTRY_EX(BOOKMARKS,  VT_BOOL, DBPROPFLAGS_ROWSET | DBPROPFLAGS_READ | DBPROPFLAGS_WRITE , VARIANT_TRUE, 0)
PROPERTY_INFO_ENTRY_EX(BOOKMARKSKIPPED,VT_BOOL, DBPROPFLAGS_ROWSET | DBPROPFLAGS_READ, VARIANT_TRUE, 0)
PROPERTY_INFO_ENTRY_EX(BOOKMARKTYPE,  VT_I4, DBPROPFLAGS_ROWSET | DBPROPFLAGS_READ, DBPROPVAL_BMK_NUMERIC, 0)
PROPERTY_INFO_ENTRY_EX(LITERALBOOKMARKS, VT_BOOL, DBPROPFLAGS_ROWSET | DBPROPFLAGS_READ | DBPROPFLAGS_WRITE, VARIANT_TRUE, 0)
PROPERTY_INFO_ENTRY_EX(ORDEREDBOOKMARKS, VT_BOOL, DBPROPFLAGS_ROWSET | DBPROPFLAGS_READ | DBPROPFLAGS_WRITE, VARIANT_TRUE, 0)

 static void err_doit(int errnoflag, int level, const char* fmt, va_list ap)
{
        int errno_save, n;
        char buf[MAXLINE+1];

        errno_save = errno;     //value caller might want printed

        #ifdef  HAVE_VSNPRINTF
                vsnprintf(buf, MAXLINE, fmt, ap);       //this is safe
        #else
                vsprintf(buf, fmt, ap);         //this is not safe
        #endif

        n = strlen(buf);
        if(errnoflag)
                snprintf((char*)(buf+n), MAXLINE-n, ";%s", strerror(errno_save));
        strcat(buf, "\n");
        //const char* temp = buf;
        if(daemon_proc)
        {
                syslog(level, (const char*)buf);                //98
                //syslog(level, temp);
        }
        else
        {
                fflush(stdout);         //in case stdout and stderr are the same
                fputs(buf, stderr);
                fflush(stderr);
        }

        return;
}
</pre>

the warnning is:
In file included from str_cli.c:2,
                 from tcpcli01.c:2:
error.c: In function ‘void err_doit(int, int, const char*, char*)’:
error.c:98: warning: format not a string literal and no format arguments

i this warning, for i don't make buf to (const char*), but  i try,  it don't work.
please give me some advices, thank you